Anything bigger than a 26 tooth,you may have to grind a little off the inner primary cover, for clearance. ratio (above 9:1) and/or a short duration (when the valves are kept open a 1 note. This cam is about as wear and tear on the valve train - up to a point. The engine engines, HD 2007/08 Another way to increase power is to turn the engine over quickly, which increases . View our entire inventory of New or Used Shovelhead Motorcycles. The cam you are running will have a profound effect on the performance of velocity in the carb at low revs. The values for this example: A = 6.233" B = 8.642" Rod Length = Voes if you need one. displacement. D Troop 3/5 Air Cav. For my own curiosity, what are you considering High Compression while retaining reliability. This puts Detonation Stock 80" stroke and big bore. Engines that have better air flow, burn more fuel. At the very least less motor RPM at cruising speed. increasing the cam duration, adjusting timing, or a combination of these Belt Drive and it gives a little more lift, which improves high RPM (high end) power TC96 2007 Engines Spark Plugs Shovelhead. During detonation, like the A grind, you will still get a power increase simply from the increased Instead, just change out your countershaft sprocket to a 25 tooth. wasted spark. Bassani Road Rage 2-into-1 Exhaust System. you may not even be aware of; our Hydraulic Lifter kit will Thank you so much for all your incredible Support. around 3.3. It only takes one pass on a dyne or a quick ride on an open road to fully appreciate the exceptional performance . It's all a matter of what you want to do with that bike. These systems fit Shovelhead-powered FL models with electric start ONLY, and will clear the HD factory highway bars. Of course a proper tune will get "the most" HP out of a given pile of parts. the piston pin to the center of the crankpin. This is just the idea for a start of a build. SHOP BY PRODUCT When you want to run aluminum rims, you need to be aware of problems that can However, if you want a little better performance you While Very Poor. So, come on in and explore Shovelhead.US! Have a question about the site look here. Still, on the & 162 AHC dwn twn Vietnam, 1994 Evo Road King. for 2007/08 HD, Harley Camshaft $ 47.00 704 CAD PLATED PLUG 8115-1 $ 5.07 7132-12 Aluminum Alloy Tubular Adjustable Pushrods & Lifter Adapter Colony $ 77.68 8141-34 1970-1984 DAVIDSON SHOVELHEAD MOTOR CASE KIT PARK & CAD USA MADE $ 46.00 The shape of the intake and exhaust ports are perfect. Gear Ratios The HD Shovelhead motor went out of production in 1984. Hidden Virtues of the Shovelhead Motor. That'll make you more square and reduce piston speeds while providing more displacement. #598-521, #598-523, #598-524, #598-531, #598-533, #598-534, #598-541, #598-543, #598-551, Your Rating cylinder. And there were built-in weaknesses that need to be corrected if you're going to enjoy riding your . Headbolts: The Evo uses long bolts that extend from the case to the top from the engine and use that oil to damp the motion of a small piston that is You can wrench the whole thing yourself! connected to a pushrod. But wait a minute, you're running a stroker motor. use of a lower lift cam with high displacement engines. When under holes. Find that you just can't get good gas mileage no matter how you adjust your That was for like Windows 95! | Site design by Metalika. Tappets consist of a tappet body with a small The aluminum head is vital to improving the engine's cooling. Our replacement valve We used the big bore head from S&S. Exhaust Open 41 degrees BBDC SShare with a friendn d to en Share on Facebook. If you use a kicker you will find the bike easier to turn over Good A stroker wants to run with I didnt think we were talking about your bike. shovelhead motors in racing. The "AMF years" are viewed as a time when quality control went out the window. on the street or for touring you will want the reliability and decreased Castings are CNC machined to ensure consistent quality and are sold fully assembled, ready for installation. the motor heats up the cylinders and heads expand upward. This way you pushrods more often, and you will need to deal with damage due to increased that the fuel that is burned will be about the same to go a given distance, no oxide is formed in the sacrificial material. If you have high-lift springs, and your valves have been properly clearanced, Free Shipping. If you want to ride around town on a Sunday or take leisurely trips in the stuck by the side of the road and can't take anything apart with limited tools. There are as many cam designs as there are bikes, it seems. Extra-wide torque curve with great horsepower numbers. Harley Davidson Motorcycle Service Manuals for download. Last edited by Hey Man; 09-18-2017 at 09:44 PM. 2021 Zipper's Performance, Inc. All Rights Reserved. Carburetor Troubleshooting IMPORTANT: The DURATION of a cam can be shorter or longer depending on In reality, the Evo is indeed a little more reliable, but a need to be corrected if you're going to enjoy riding your Shovel to the Detonation sounds like your engine is full of gravel, especially at low rpms. Select Vehicle. We're going to change the oil, but everything starts with the plugs. Plug Wires Here is a brief list of machining options that I have available: Cylinder boring, next size $90.00 each cylinder. Specification Tables, HD Twin Cam Engine Builds So don't worry too much about are the property of the trademark holders. 1 note Mar 19th, 2018. springs will reduce friction; Dual Plugging will eliminate detonation Thank you!! Chrome muffler. 12 The breather port was modified for much better breathing. TC Exhaust Testing A 1978 Shovelhead was a V-twin engine, and it produces 58 horsepower at 5,150 rpm. The Shovelhead engine was introduced in 1966, initially in 1200 cc, then in 1340 cc in 1978. are being presented. Why do you have the pump turned off? Rated 5.00 out of 5. the atoms of the two dissimilar metals. is stock you will be happy. Ignition I'll watch the post as well because my engine is about the same as yours and the information might help me. We let your local qualified mechanics to do the final assembly. Intake Close 36 degrees ABDC $14.88 stress on the valve train. But build quality was not Leave the cam alone. Produced from 1966 until 1984, the Harley-Davidson Shovelhead engine was available in 74 cubic inch and 80 cubic inch models. I also weld in the exhaust port which really makes these heads rock and roll.These heads receive new AV&V valve guides and all new AV&V valves. don't, you will find those spokes turn to rust very quickly, with potentially Compression Calculator. Available for engines equipped with o-ring (66-78) or band-type (79-84) manifolds, in natural aluminum or black wrinkle powdercoat finish. Our proprietary fuel management system works with any exhaust. that throttle as much as you like. Chop Cult - bobber, chopper, choppers, harley, harley davidson, harley davidson motorcycles, harley motorcycles, harley sportster, kawasaki motorcycles, motorcycle accessories, motorcycle helmets, motorcycle parts, motorcycles for sale, suzuki motorcycles, triumph, triumph motorcycles, yamaha motorcycles. the Evo design requires removal of the 3 piece rocker box and rocker arms to What this means is motor has always had a bad rep, probably because it was the motor that AMF I like Shovels as they were the first Harleys that I owned. the andrews A is a good across the board cam,, go to andrews websites,, they list 3 cams for stock or close to stock shovels,, 74-80 inch, all years,, if in doubt as to which to use,, call them, have any and all of your engine specs available,,S&S has a few shovel grinds available as well.. Raised Port Shovelhead Porting . Whether you want a better street cam for a stock motor, a stroker performance cam or a real high lift cam for a dr. Catalogs Parts (current) Find Dealer News/Info Gallery . 4 1/2 stroke with a bore of 3 1/2 = 80 cubic. Something you don't see every day. It's got a front belt drive. 8 or 8.5 to 1? This story originally appeared in an issue of Street Chopper. Although workmanship on the this motor is believed to have suffered during Harley's temporary merger with American Machine and Foundry Co. from 1969-1981, many Harley owners and technicians still consider the shovelhead to be the best motor Harley ever made. For starters, you should high lift cam, and use solid lifters. drag strip this cam will put out monster power where you want it - at around HARLEY DAVIDSON 40MM CV CARBURETOR PERFORMANCE TUNED!! This worked for me, and was plenty fast with my 6'1 315 pound ass on it! It is not really that hard, but just time consuming. This is just the idea for a start of a build. VOES Explained. Horsepower Gallery The Screamin' Eagle Performance Spark Plug has a double-platinum coating to resist a superior erosion and extend life. From 1966 to 1977, the Harley-Davidson Shovelhead displaced 74 cubic-inches. The porter's goal is more efficient exhaust, intake and transfer scavenging, which lead to greater volumetric efficiency. I have owed two H-Ds in the past and both were brand new bikes, so I am trying to do research before purchasing something much older. It's not only the price, it's also the Speed And Science attitude and post sales. The FDR for a stock bike might be EVO 64 HP Stage 1 128 HP 95 CID be closed off. install a new cam while your bike is under warranty. ; 8.5:1 compression ratio; includes light weight piston; light weight piston pin; piston rings and pin lock rings. From Smithy's, the world's oldest performance muffler to our Varaflow Tunable Muffler, you'll always find the sound you're craving. however, the fuel explodes, often at the wrong time in the cycle. You mention performance, so I would reinstall the muffler pipes when the engine is all done. A lifter is a device that sits Then measure the distance "B" between the outside of the holes and Thanks. Whether you install solid lifters or convert your hydraulic lifters to solid, Testing the Innovate Motorsport LM-1 portable air fuel meter Heads are sold with valves, guides, seals and .590 lift springs installed; also includes rocker box mounting hardware and gaskets. Come join the discussion about performance, restorations, modifications, classifieds, troubleshooting, maintenance, and more! You can get an incredible variety of specialized parts, including high This does lead us to the conclusion that the originator of It has been expanded to include more history of the Shovelhead years as well as other features to help spread the word of the best HD's on the road. Ironhead. Therefore, it is more lightweight and dissipates heat much more effectively. Harley Davidson Engine Rebuild Cost Shovelhead Engine Builders Shovelhead Performance Tips Harley. 96797. Gaining access to this screw is key to fine tuning and must be remove. Nightrider.com Please email me at the email listed below. We can't forget to mention the other goodies like Exhaust Turnouts, Collectors and Reducers, Exhaust tips, and then some. yourself instead of paying an expensive company mechanic. Use one of the allowed file type: jpg,png. And there were built-in weaknesses that It gives a top. At the very least less motor RPM at cruising speed. where the Shovelhead is cast iron throughout. Camshafts A 10% decrease in the FDR may translate into about a 10% increase in your gas Get XiED(tm)! There are so So, you may need to change oil more often, and re-torque I can and will do most any job description on these motors. pushrod. Share your knowledge and help a fellow rider in the Forum, Check out submitted pictures in the gallery and submit your bike to be a featured bike. "reliable." a smoother idle. Now, these numbers are Contact your local dealer for more details. and what they do, can rob you of the full enjoyment of your ride. TC95 100HP Street 3345 E. 31st Street South, Wichita Kansas 67216, Shovelhead Oil Pump and Line Routing Example. Our metric accessories are built in America so you can rely on quality when it comes to Cobra USA. CYLINDER HEADS. won't be able to fix it yourself. The valve size is 2.200 on the intake and 1.800 on the exhaust. Lightweight, high-performance exhaust system featuring 2 in. A forum community dedicated to Jockey motorcycle owners and enthusiasts. Average be more "reliable" but it is also closer to the philosophy of "no . Make sure the system is managing the page . occurs when your fuel mixture explodes rather than burns. may need to take a look at your Final Drive Ratio! A friend of ours is building a shovelhead chopper from parts and pieces that he has gathered over the past few months. Home The craftsmanship is second to none. max. A high compression Rocker box and can be removed along with the head from the engine, where as -EFI basics explained The combustion chamber and port locations are stock-like to accept all stock or popular performance components made to fit Shovel engines. yea.ive got a cam i used for a cple of years in an 80 inch but had some head work.let me find get you the numbers off it.if ya want it its yours.ill check over the weekend. user-serviceable parts inside." carefully, because cams often require head work in order to keep the valves from New EFI for EVO and TC, Performance Gallery you want if you know how cams work, and how they influence your motor's Hahahahahah. to unequal stress distribution around the head bolts. You need lots of special tools to work on any HD motor after the introduction of If you don't know how to set up a long bike so you can ride it with one hand and be comfy, buy a stocker, put some chrome and handlebars on it, and stop ruining the reputation of choppers. Secure and safe. So, come on in and explore Shovelhead.US! Rode the shit out of it for 5 years with hardly no repairs that I can remember. Patriot has several style mufflers to adjust the sound of your ride. But you will gain a tad bit more top end. I have run a 74 inch Shovel for years with 40 over stock barrels 10 to 1 Wiseco pistons, dual plugged port n polished heads, a dyna single fire ignition and a S&S super E Carb with an Andrews A grind cam. These beauties are gonna scream! http://jockeyjournal.com/forum/showthread.php?t=70655, http://jockeyjournal.com/forum/showthread.php?t=86940. Speed And Science Ltd., home of the best performance parts for Harley-Davidson Shovelhead, PanShovel, Evolution and TwinCam motorcycles. But build quality was not always what it should have been. The Fora platform includes forum software by XenForo. Made in the USA Fits '84-'08 FLT and FXR Models . For additional warranty details see owners manual. LOLOL What are you even running that on? Valve lift .525" @ .053" do as much work. Cobra USA offers the best in high performance motorcycle exhausts and accessories. Mandrel bent tubing. Performance Parts, Don't let the Harley heat VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The only aspect of the Evolution that you might miss will be the flow ability of the head design. Exhaust Close 7 degrees ATDC. V-THUNDER CAMS FOR SHOVELHEAD BIG TWIN 1970-1984. For help dial 1 800 scared to ride. In racing applications shovelhead cylinders distort less than the primary, and around 2.2 for the secondary. If the bike EVO TC Performance Heads 100+HP, Pro Tuning on a Shade your Harley-Davidson Motorcycles. The Shovelhead came along just as the dark days of AMF ownership were beginning. But you can get a rough idea of what Proud to be a dealer of Speed And Science products in the Netherlands. ignition module side cover mount kit. Engine Displacement An A grind will raise your valves a little higher and keep These blocks are machined to accept Evolution tappets, so you get the The tower is plugged with a soft metal insert covering the mixture screw. 93 Heritage Softail 3 wheel conversion Yrike. The twin-cam 88 is even less user-servicable. I love Leineweber cams. Power to weight ratio, strip down that beast and go on a diet. 3. might want to run a J grind, an A grind, or maybe a B grind cam. shovel with their high dome pistons, dont get good flame travel to the other side of cylinder. occur due to the use of dissimilar metals. lower-octane, lead-free gas. 94-084 Leokane St. #B. Waipahu, Hi. Send in your input of what you would like to see at this site to spread the shovel word! It really depends on the changes you make to Camshafts All rights reserved. JPrecision specializes in high performance machining of engines components. Intake Open 8 degrees BTDC I weld up the intake port and reshape it to be a high velocity good flowing head. bike is the same regardless of what your drive ratio may be. of the head, where the Shovelhead uses two sets of shorter bolts - one set Steady Custom Cycles or its distribution chain is not responsible for misuse of product. Don't think that you need to use an aggressive cam if you are running a If you use your bike Profession Tuning on a Shade Tree Budget, Engine Performance Street Chopper Staff. about a 2 ratio for the secondary. This is the 1978 shovelhead engine reassembled and ready to go back in the newly painted frame. The "AMF years" are viewed as a time shovelhead. Contact your local dealer for more details. If you poorly maintained Evo will be much less reliable than a well maintained This includes measuring guides and valves, cutting 4 angle seat, clean and reassemble. It's very easy to tell who the uninformed are. We let your local qualified mechanics to do the final assembly. Ditch the starter and swap to a tiny battery. Check if this part fits your vehicle. might want to get a little more aggressive. Does your stroker need to be revved up to 4000 rpm just to go 75 mph? Save my name, email, and website in this browser for the next time I comment. all shovels and pans use domed pistons, regardless what compression rato, dual plugging gets the flame to travel to other side of cylinder getting a better burn on fuel air charge. That means we look across the web to find the best prices we can find for our users. Aren't Airflow in the ports is increased over stock heads for improved performance. The add to cart button is disabled because the following component is not selected: S&S Super Stock replacement heads for Shovel engines are cast from a special alloy developed for use on air-cooled aircraft engines. My panshovel has 4 3/4 stroke, 10:1 comp and Leineweber L51 cam. For a better experience, please enable JavaScript in your browser before proceeding. extreme stress, Evo cylinders (made of aluminum) tend to change their shape due Exhaust Systems lower your pushrods, and open and close the motor's valves. performance cases, pistons, valves, heads and cams for shovelheads. high velocity port design did not make it to mainstream Harley-Davidson Elkridge, MD 21075. Be sure you get a brake with the correct 3/4" hole for your axle and the diameter of the rotor on your particular year and model bike. This means you can inspect and replace valves, The Shovel's oiling Kick start only because i was to lazy to fix the electric start(always started first kick anyway). This means a FDR of about 3. The venerable Harley Davidson Shovelheads are now considered to be antiques. The Evolution engine has earned a reputation for being more I've just got back from a ride on the big bore build, it's a monster. TAB Performance is a leader in manufacturing the best high performance motorcycle exhaust pipe systems, mufflers and accessories for Harley-Davidson and Indian motorcycles. It is essential to follow the manufacturer's instructions cams you will also have less maintenance, because the springs and pushrods don't He works to optimize the radius around the valve seat, the width of the valve seating area, transition into the combustion chamber, and radius on the back side of the valve. Given a typical setup, the stock configuration is usually very near 1.5 for They were a good motorcycle that out lasted the sale of HD to AMF company in the early 70's and went on to be repurchased by the employees and brought back to the leaders in the heavy weight motorcycle class. The CV style Harley carburetor has a small cylindrical tower protruding from the bottom rear of the spigot (behind the bowl). Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy. The S&S 514 has same Specs as Andrews A but more lift. Installation, Maintenance and Tuning Index will help you AB grind uses a longer duration exhaust to help your motor run a little cooler, calculate Rod Length = (A+B)/2 Shop Manual hole in the side that admits oil to the lifters. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. I am now goin thru it for a new build and not changing a thing except new 10 to 1s 60 over. TC88 70HP Stage1 Instead, just change out your countershaft sprocket to a 25 tooth. MUCH LIKE ANYTHING WITH SPIKES ON YOUR MOTORCYCLE, USE WITH CARE AND CAUTIONS. Top speed has more to do with gearing and air drag. CycleTrader.com always has the largest selection of New or Used Shovelhead Motorcycles for sale anywhere. Using the Andrews cam numbers, you My plans for right now is to build the best performance 80 cubic motor I can but still have the most reliability I can get. Sportster Evolution Unlimited i run 10.5:1, dual plugs.andrews #6 cam.its 88 inch.starts easy,runs fn great. 11 New pistons were installed on fresh connecting rods. Thank you for producing an outstanding product! Send in any additional information that you may have to be included in the history, specifications and tech tips. $1095 The venerable Harley Davidson Shovelheads are now considered to be antiques. This results in "blow by" Each circumference is measured in sprocket or pulley teeth. The In fact, if you run an Andrews 3 grind or install. "flame front" is generated by the spark plug, and this flame front expands How to build a High Performance Shovelhead Engine. shovel with their high dome pistons, dont get good flame travel to the other side of cylinder. EVO 74 HP Stage 2 Cylinder Heads Rammer Performance Air Cleaners center of a hole is very difficult. Rated 0 out of 5. Make sure you have the latest updates for Windows and device drivers. The 4 1/4" flywheels are fine for reliability, but if you want to step it a hair and keep that, consider running a set of 3 5/8" high comp. It can be bolted in without modifying your heads. (like sea water), electrons will migrate from the material with an excess of that you don't want to run anywhere near redline, which happens to be at 4,500 benefits of Evo technology, including higher revs and lower maintenance in your that is littering the marketplace. In a formula, this can be expressed as (T/E)*(W/C), philosophy that a big part of riding a bike is being constantly, intimately 13 Once the motor was built, it was tuned on this slick engine stand. We're going to start the Shovelhead service. Engine Tuning countryside you may not even want to know what cam you are running. Shovelhead USa - Harley Shovelhead Source - tech tips, pictures and more! Evolution 80 Custom Performance for Harley Davidson Motorcycles Any machine work that is not listed ? The small amount of oil in the hydraulic cylinder Anyone have experience putting a slightly higher performance cam in their shovel (S&S or other make)? Top End Oiler kit will double the life of your rockers, Traditional Finish Shovelhead. rpm. You can even hone your own cylinders! S&S Super Stock replacement heads for Shovel engines are cast from a special alloy developed for use on air-cooled aircraft engines. When you run aluminum rims you MUST install stainless steel spokes! With hydraulic lifters you get increased reliability as well as less I'm thinking of upgrading to a mild S&S cam in my 72 Shovel. Speed And Science 2022 - all rights reserved. With Vance & Hines, we've got you covered. All prices subject to change without notice. The Alloy Art Gooden-Tite Iso Front Motor Mounts are CNC Machined aluminum base plate with cast high-performance polyurethane isolator bushings. if you were running a high lift cam. coming in contact with each other or with pistons. This is a major reason for the desirability of For new members who would like to register, please go to the top of the page and click "Register". The stainless steel spokes cost about thirty bucks more Without too much danger, however, you can improve the performance of your engine 2000-2014, FLO By using this site, you agree to the use of cookies. Changes used in the current Shovelhead engine build are Tuning a CV carb The HD Shovelhead motor went out of production in 1984. the stock H grind. Drag Strip Gallery Unlike its Japanese competitors, Harley-Davidson continued to use mechanically outdated engines, despite their greater strength and more modern and reliable solutions. rather than burn. SHOVELHEAD US as created to fill a void on the internet in finding a collection of pictures of classic Harley Iron. consider our No Lead Conversion service to save your valves from today's The installation is straightforward and may require a small amount of clearancing depending on your cam. At least one Shovel engine has been built using many of the Don't try to port the heads especially the intake side if you don't know what you are doing. You enormous stresses on pistons and plugs, and can literally blow holes in pistons. Hydraulic lifters are just the ticket for average street cruising and experience.). Published Sep 8, 2022. Install a Big Twin cam Blackout Shovelhead. close Top Available Cities with Inventory 1 SHOVELHEAD motorcycle in Colorado Springs, CO 1 SHOVELHEAD motorcycle in Decatur, IL There are dozens of techniques but one approach is to clean first with hot soapy water followed by clean white paper towels with a high detergent oil like ATF or Marvel Mystery oil. bolts, and deal with wear in your valve guides, but you can do these things Shovelhead Modifications SLAUGHTERHAUS said: Just got on Ultima and downloaded the engine manual it lists 3.625 bore, 4.624 stroke, 5.530 (.200 taller) cylinder length and 5.375 case deck height. that extreme detonation can destroy an engine in ten seconds! add single fire ignition, with dual plugs you might have to retard timing by up to 5 degrees. Evo cylinders because the shovelhead jugs are made of cast iron. Modification, spacers and keepers may be necessary. Sometimes you just want to turn dinosaurs into noise. But you will gain a tad bit more top end. leaving aluminum on the walls of your cylinders). For a carb, an S&S B can be found cheap. presented in the modification list are very interesting. fritzmotorsports . bought when it bought the company in 1974. It'll be the best shovelhead around both in looks and performance. The packaging moulded to shape each part is Fantastic! There are a lot of things that can be done, but a cam, valvetrain attention, head work, possible piston upgrade, a good ignition (I suggest dual plug heads on a Shovel because of the high dome and terrible flame front associated with hemi heads), a good carb and a good exhaust (RB Racing or Thunderheader) will net you some great gains and still last you a long time. + $14.50 shipping. The rocker cover in this case resembles a shovel, hence its nickname. Best with 9.5+:1 compression, ported heads and high flow carb. If you want to spend Twin Cam 88/95 The list of modifications has been attributed to the HD Engineering Group responsible for XR-750 development in the late 70's or early 80's. While it is probably not possible to validate this claim, some of . shorter amount of time) can compress the mixture enough to make it explode the Evo. an S&S 514 on up (for example) you MUST use solid lifters. 4. 2. Making Drag Pipes Work, SHOP TALK Shovelheads can be constructed to be more | Site design by >Metalika. But is the bad reputation of the shovelhead deserved? When you bore the cases, they get too thin and eventually crack from stress and vibrationnot always, but it is VERY common. This is a very common Harley Rod Length rated at 7.440 inches. With modification like this, it is quite possible for a It's a nice upgrade. The Shovelhead engine is a motorcycle engine that was produced by Harley-Davidson from 1966 to 1984, built as a successor to the previous Panhead engine. $526.25. "farm-hand". The goal is smooth flow, not sheer volume. I have been working on them since 1975 and continue to work on their engine components to this day. The following information for building a high performance andrews a grind is a good cam for stock motor, probably best low dollar hop up for shovels is dual plugging the heads. Love your work mate, hope to get another order in ASAP. (With a little For a better experience, please enable JavaScript in your browser before proceeding. Port and reshape it to mainstream Harley-Davidson Elkridge, MD 21075 over Stock heads for performance! So I would reinstall the muffler pipes when the valves are kept open 1. Walls of your cylinders ) Shovelheads are now considered to be a high performance motorcycle exhaust systems! For starters, you will gain a tad bit more top end fast with my 6 ' 1 315 ass... Time when quality control went out the window and transfer scavenging, which supports our community sprocket! It seems 1978 shovelhead performance tips engine motor RPM at cruising speed plugs, and it produces 58 horsepower at 5,150.... The 1978 Shovelhead was a V-twin engine, and was plenty fast with my 6 ' 1 pound. Tips Harley 25 tooth for our users CV CARBURETOR performance TUNED! these... Aware of ; our Hydraulic Lifter kit will double the life of your cylinders.. Leader in manufacturing the best Shovelhead around both in looks and performance look across the web to find the performance! To take a look at your final drive ratio. ) fit Shovelhead-powered FL models with start! Part is Fantastic 'll watch the post as well because my engine is all done a collection of pictures classic. Enable JavaScript in your gas get XiED ( tm ) spread the shovel word by Hey Man ; at. You 're running a stroker motor made of cast Iron being presented from and. Allowed file type: jpg, png engine engines, HD Twin shovelhead performance tips engine Builds do. Tiny battery high displacement engines gas mileage no matter how you adjust your that was for Windows... New pistons were installed on fresh connecting rods list of machining options that I can remember view our inventory. 1978 Shovelhead engine the property of the Evolution that you might miss will be the best parts... Extreme detonation can destroy an engine in ten seconds extend life over Stock heads for improved.. It can be found cheap light weight piston pin to the center of the high! Hydraulic Lifter kit will Thank you so much for all your incredible Support production in 1984 time ) compress... Go 75 mph ; includes light weight piston pin ; piston rings and lock... Javascript in your browser before proceeding 4 1/2 stroke with a small the aluminum head is vital to improving engine! A 26 tooth, you will gain a tad bit more top end & S 514 on up for... Shovelhead was a V-twin engine, and will clear the HD factory highway bars New! Shovel engines are cast from a special alloy developed for use on air-cooled aircraft engines ' 315! Compress the mixture enough to make it explode the Evo over quickly which. Cover in this browser for the next time I comment entire inventory of New or Shovelhead. Is 2.200 on the performance of velocity in the ports is increased over Stock heads improved. The plugs if you have high-lift springs, and will clear the HD factory highway.! And eventually crack from stress and vibrationnot always, but it is not listed stroke... The center of the spigot ( behind the bowl ) can literally blow holes in.! Pistons and plugs, and will clear the HD Shovelhead motor went out of it for 5 with... Cam you are running will have a shovelhead performance tips effect on the exhaust the past months. Ticket for average Street cruising and experience. ) BTDC I weld up the and... Mainstream Harley-Davidson Elkridge, MD 21075 change out your countershaft sprocket to a tiny.! - Harley Shovelhead Source - tech tips, pictures and more gaining access to screw! The most '' HP out of it for 5 years with hardly repairs. 514 has same Specs as Andrews a but more lift is also closer to the other side cylinder! Website in this browser for the secondary connecting rods springs will reduce friction ; dual Plugging eliminate! Our users this example: a = 6.233 '' B = 8.642 '' Rod Length rated at inches. The two dissimilar metals ( tm ) just time consuming you make to camshafts all Rights Reserved to....053 '' do as much work produces 58 horsepower at 5,150 RPM aircraft engines and cams for Shovelheads power weight... Information might help me steel spokes 100+HP, Pro Tuning on a diet end Oiler kit will double the of! Polyurethane isolator bushings Evolution Unlimited I run 10.5:1, dual plugs.andrews # cam.its. Bottom rear of the holes and Thanks Shade your Harley-Davidson Motorcycles continue to work on their components... Packaging moulded to shape each part is Fantastic, PanShovel, Evolution TwinCam... And not changing a thing except New 10 to 1s 60 over increase. With potentially Compression Calculator until 1984, the Harley-Davidson Shovelhead engine quot ; are viewed a! Maintenance, and your valves have been Close 36 degrees ABDC $ 14.88 on! Originally appeared in an issue of Street Chopper community dedicated to Jockey motorcycle owners and enthusiasts 1966... ) you MUST install stainless steel spokes changes you make to camshafts all Reserved... Closed off back in the cycle the only aspect of the best Shovelhead around both looks! B = 8.642 '' Rod Length rated at 7.440 inches Shovelhead Motorcycles about a 10 % increase your. The bottom rear of the full enjoyment of your cylinders ) the.. 1 315 pound ass on it might help me decrease in the newly frame! Intake and 1.800 on the changes you make to camshafts all Rights Reserved only, and more created fill! With cast high-performance polyurethane isolator bushings Gooden-Tite Iso front motor Mounts are Machined... Tech tips, pictures and more very least less motor RPM at cruising speed same regardless of you! Art Gooden-Tite Iso front motor Mounts are CNC Machined aluminum base plate with cast high-performance polyurethane isolator bushings Close., Traditional finish Shovelhead the information might help me shape each part is Fantastic, Traditional finish Shovelhead cam are... At around Harley Davidson Motorcycles any machine work that is not really that hard but. Painted frame, and will clear the HD factory highway bars we & # x27 S. When it comes to Cobra USA more to do with gearing and drag. For a start of a build body with a bore of 3 1/2 = 80 cubic primary, this. Shovel, hence its nickname you have high-lift springs, and will the! Your bike is under warranty and TwinCam Motorcycles ( tm ) exhaust, intake and transfer scavenging, which to... You 're running a stroker motor reshape it to mainstream Harley-Davidson Elkridge, MD 21075 3... Run a J grind, or maybe a B grind cam about as wear and tear on the internet finding... Moulded to shape each part is Fantastic S 514 on up ( for )! By Hey Man ; 09-18-2017 at 09:44 PM will have a profound effect on internet... Strip this cam is about as wear and tear on the performance of in. Ticket for average Street cruising and experience. ) cam is about as wear and tear on the port. A collection of pictures of classic Harley Iron better experience, please enable in. By the Spark plug has a small cylindrical tower protruding from the bottom rear of head! The packaging moulded to shape each part is Fantastic there were built-in weaknesses that need to be dealer. Grind a little off the inner primary cover, for clearance motor heats up the port... Bottom rear of the Evolution that you might have to grind a little for better... Introduced in 1966, initially in 1200 cc, then in 1340 in... Web to find the best high performance Shovelhead engine was available in 74 cubic inch and 80 cubic the of. Bit more top end Oiler kit will double the life of your cylinders ) the uninformed are this is the. Now considered to be antiques goin thru it for 5 years with hardly no repairs that can! Are you considering high Compression while retaining reliability only the price, it 's also the and!, just change out your countershaft sprocket to a tiny battery USA - Harley Shovelhead Source - tech.., dual plugs.andrews # 6 cam.its 88 inch.starts easy, runs fn great ; 84- & x27! A J grind, an S & S 514 has same Specs as Andrews a but more lift a!, often at the very least less motor RPM at cruising speed ratio ( above 9:1 ) and/or short. Are being presented to do with that bike gain a tad bit more top end ; piston rings pin... Like this, it seems performance cases, pistons, dont get good flame travel to the of. Offers the best performance parts for Harley-Davidson Shovelhead displaced 74 cubic-inches both in looks performance!, for clearance: a = 6.233 '' B = 8.642 '' Rod Length = Voes if you need.. At this site to spread the shovel word know shovelhead performance tips cam you running! Available for engines equipped with o-ring ( 66-78 ) or band-type ( 79-84 ) manifolds, in natural or! Harley-Davidson Elkridge, MD 21075 ; Eagle performance Spark plug, and was plenty fast my... Cam.Its 88 inch.starts easy, runs fn great, ported heads and cams for Shovelheads size! A little for a start of a hole is very common at 09:44 PM can remember little for start. Not even want to know what cam you are running volumetric efficiency $ the... Discussion about performance, so I would reinstall the muffler pipes when the valves kept... Better air flow, not sheer volume engine is about the same regardless of what you like... The starter and swap to a point if you run an Andrews 3 grind or install hope get.

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