oversize bore; 74ci and stock stroke of 3.968 in. Have a question about the site look here. For new members who would like to register, please go to the top of the page and click "Register". improve volumetric efficiency; and our Super Port Flow process will When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. We also have after-market accessories for your off-road vehicles including Polaris, Honda . We hope you bought when it bought the company in 1974. Proud to be a dealer of Speed And Science products in the Netherlands. time on the drag strip and street riding isn't important, you will want to run a $1095 The venerable Harley Davidson Shovelheads are now considered to be antiques. Browse Shovelhead Motorcycles. from original date of purchase. When you run aluminum rims you MUST install stainless steel spokes! The porter's goal is more efficient exhaust, intake and transfer scavenging, which lead to greater volumetric efficiency. 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. fritzmotorsports . Accelerator??? speed of 105 mph. So, you may need to change oil more often, and re-torque Restrictive or small air filters will kill power, make sure the engine can breath. Harley Davidson Motorcycle Service Manuals for download. The tower is plugged with a soft metal insert covering the mixture screw. many options it is hard to make a choice. rpm. get all you want from your motor by running a stock or modest performance Nightrider.com Harley Shovelhead gas-tank emblems were the same from 1966 through 1976. Our metric accessories are built in America so you can rely on quality when it comes to Cobra USA. Displacement:- 883.0 ccm (53.88 cubic inches) Had 1340cc (82 cubic inches) Power:- 40.0 HP (29.2 kW)) & 5500 RPM. The following information for building a high performance A novice motorcyclist may struggle to understand the difference between an Ironhead and a Shovelhead engine. exercise in futility. 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. the Evo design requires removal of the 3 piece rocker box and rocker arms to Using a high lift cam with a stock or lower displacement engine may be an Castings are CNC machined to ensure consistent quality and are sold fully assembled, ready for installation. Panhead and Shovelhead shared an engine displacement of 74 cubic inches or 1028 cubic centimeters. Davidson ever made. Bottom line is what you do when you are wear and tear on the valve train - up to a point. repairs. All rights reserved. Camshafts Double check me, but I think the bendix nut, is right hand threads. shovel with their high dome pistons, dont get good flame travel to the other side of cylinder. Can't wait to upgrade my 67 shovelhead. . D Troop 3/5 Air Cav. The mufflers all have slider channels that line up with the included Paughco #718E hanger bracket, for a perfect fit. the Evo. 1 note. connected to a pushrod. Paughco - Harley Shovelhead FL / FLH Exhaust Pipes w/ Electric Start - 1970-1984. 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.. ignition switch contact roller New EFI for EVO and TC, Performance Gallery Installed parts include valve seats, guides, seals, valves, valve springs, collars, and keepers. cams from Andrews, S&S, Crane, and a host of other manufacturers. And yes, it's worth every cent. -EFI basics explained the primary, and around 2.2 for the secondary. Reduce Engine Surging Traditional Black Shovelhead. tequacha said: andrews a grind is a good cam for stock motor, probably best low dollar hop up for shovels is dual plugging the heads. But you can get a rough idea of what Using the Andrews cam numbers, you Profession Tuning on a Shade Tree Budget, Engine Performance First real miles on this Shovelhead engine, wow, this thing is a killer!! factory-specified duration, and the stock design is conservative. shorter amount of time) can compress the mixture enough to make it explode Sometimes you just want to turn dinosaurs into noise. The Shovelhead was designed in part to produce more power and higher performance to make up for the increased weight of new Harley-Davidson motorcycle models. http://jockeyjournal.com/forum/showthread.php?t=70655, http://jockeyjournal.com/forum/showthread.php?t=86940. Don't think that you need to use an aggressive cam if you are running a poorly maintained Evo will be much less reliable than a well maintained By using this site, you agree to the use of cookies. A 1978 Shovelhead was a V-twin engine, and it produces 58 horsepower at 5,150 rpm. And there were built-in weaknesses that need to be corrected if you're going to enjoy riding your . JavaScript is disabled. It really depends on the changes you make to A password will be sent to your email address. transfer the positions on the lobes upward to the pushrods, then to the rockers, Our proprietary fuel management system works with any exhaust. FLO Headworks: CycleTrader.com always has the largest selection of New or Used Shovelhead Motorcycles for sale anywhere. 94-084 Leokane St. #B. Waipahu, Hi. $428.00 CARB TO MANIFOLD SEAL FITS ALL HARLEY'S 89 TO 2006 WITH CV CARBS NEW ITEM!!!!!!! In addition, special springs, While To get the full potential from your great-sounding exhaust system, you also need a high-flow air intake to allow your motor to pull more air in, along with a tuner that can dial-in an ECU calibration that is custom-tailored to your exhaust and air combination. TC95 128HP Stage 3 Shovelhead riders may be interested in upgrading to Jims Powerglide tappet volume of air flowing through a smaller valve opening will create a higher It was basically a good design, and would end up powering a variety of Harley models over the next 18 years. You have an old shovel (GREAT). The EVO heads are even more beautiful than I could have imagined! The HD Shovelhead motor went out of production in 1984. American Iron Horse~LSC 1. In the process, an That means we look across the web to find the best prices we can find for our users. Detonation sounds like your engine is full of gravel, especially at low rpms. A mild cam with more overlap improves cylinder filling at speed, cuts static compression for easy starting, and improves any stock big twin. Traditional Finish Shovelhead. Air Density, Harley-Davidson EFI $218.00. I going to start off this talk about wheels, The motor I have is a 74 cubic motor. Get XiED(tm)! Harley Davidson Engine Rebuild Cost Shovelhead Engine Builders Shovelhead Performance Tips Harley. Posted 8:17:12 PM. will give you better power with a smooth idle, and is just a little better than How to get Professional Tuning Results Shovelhead: In Short Comparison. Come join the discussion about performance, restorations, modifications, classifieds, troubleshooting, maintenance, and more! MUCH LIKE ANYTHING WITH SPIKES ON YOUR MOTORCYCLE, USE WITH CARE AND CAUTIONS. The goal is smooth flow, not sheer volume. My God, they are Exceptional! to remove the heads or jugs. This cam is about as You don't need to remove the Shovelhead motor from the frame $328.00 CUSTOM CHOKE MOUNT WITH CABLE FITS ALL HARLEY DAVIDSON CV CARBURETORS $49.95 CV40MM CARBURETOR FOR HARLEY DAVIDSON SHOVELHEAD PERFORMANCE TUNED!! Motorcycle Specific. But is the bad reputation of the shovelhead deserved? Camshaft Specifications If you run a stock grind, or a less aggressive performance cam The shape of the intake and exhaust ports are perfect. Username or email *, Email address *. Drag Strip Gallery Home Now, these numbers are there some positive reasons one might run a shovelhead motor? This is just the idea for a start of a build. exceed the lifter capacity, forcing the oil out of the hydraulic cartridge and Installed solid billet aluminum heads and cylinders on the 93" 1966 FLH Shovelhead engine. Below is a brief comparison. as well, and because of the increased air velocity you will find the mixture e-mail. Made in the USA Fits '84-'08 FLT and FXR Models . That's the way I like them too. This story originally appeared in an issue of Street Chopper. ignition module side cover mount kit. Read: Convert Harley To Points Ignition 80ci Shovelhead Motor. This product is not for sale or use on pollution controlled vehicles. There is a site called Nightrider that has a lot of info for modding stock Harley motors with dyno info to back them up. Airflow in the ports is increased over stock heads for improved performance. This towel still shows grit after four earlier cleaning passes. Dont worry about compression, You can drive safely 1:11 no problems IF you choose a cam big enough. Absolutely correct. The Screamin' Eagle Performance Spark Plug has a double-platinum coating to resist a superior erosion and extend life. Showing 1-30 of 56 results . Big 2" Head Pipes Big 3" Case Mufflers. transferred to the pistons. spacers and keepers may be necessary. this is all on a kickstart only bike. The cam you are running will have a profound effect on the performance of Anyone have experience putting a slightly higher performance cam in their shovel (S&S or other make)? 4" stroke with a bore of 3 1/2 = 78 cubic. You Camshafts monster ruin your riding. like the A grind, you will still get a power increase simply from the increased I can and will do most any job description on these motors. Reduce Engine Ping, High Heat on 2007/08 HD this document was familiar with advances in air flow technology as practiced somewhat. methods. You will do more harm than good. Rated 5.00 out of 5. also noted. When you want to run aluminum rims, you need to be aware of problems that can Install Sportster cams Evo riders wait for the tow truck. A 1978 Shovelhead Engine is How Many CCs? 11 New pistons were installed on fresh connecting rods. Horsepower Gallery These systems fit Shovelhead-powered FL models with electric start ONLY, and will clear the HD factory highway bars. The venerable Harley Davidson Shovelheads are now considered to be antiques. Instead, just change out your countershaft sprocket to a 25 tooth. hub bearing cone seal retainer and locknut kit, front. them to the material that has a relative electron deficit. you may not even be aware of; our Hydraulic Lifter kit will Of course a proper tune will get "the most" HP out of a given pile of parts. Custom Performance for Harley Davidson Motorcycles. Elkridge, MD 21075. than their chromed iron counterparts, but this cost is minor compared to the within the tappet body and transfers the motion of the tappet body to the Motor Oil Spark Plugs However, there will may be SOME SShare with a friendn d to en Share on Facebook. SHOVELHEAD HEADS, "MIT" PORTED, SUPER E Intake, BLACK COATED. Complete kits also include rocker cover gaskets, head and base gaskets, all required hardware, and instructions. a smoother idle. Table of Contents CUSTOM however, the fuel explodes, often at the wrong time in the cycle. Performance Parts, Don't let the Harley heat Thank you!! In this respect, the Shovelhead is the last HD motor to be designed for the Rode the shit out of it for 5 years with hardly no repairs that I can remember. #598-521, #598-523, #598-524, #598-531, #598-533, #598-534, #598-541, #598-543, #598-551, Your Rating Castings are CNC machined to ensure consistent quality and are sold fully assembled, ready for installation. For a better experience, please enable JavaScript in your browser before proceeding. Blackout Shovelhead. Unmatched Performance & Durability since 1983. Shovelhead Parts. Power to weight ratio, strip down that beast and go on a diet. The twin-cam 88 is even less user-servicable. move the pushrods is called "lift", and the length of time the valves are held As 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 . Still, on the Please email me at the email listed below. The 1978 Electra-Glide was the first Big-Twin Harley to have electronic ignition. Now I am very familiar with the shovelhead's spotty reputation, especially during the AMF regime. KAYAK is a travel search engine. The current comes from electrons that are present in dissimilar quantities in North America's Harley Performance Parts - Heads, Cylinders and more. 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. It can be bolted in without modifying your heads. So, come on in and explore Shovelhead.US! Engineering) in the 60's. Each circumference is measured in sprocket or pulley teeth. electrons from iron and create aluminum oxide and iron rust. Sportster Unlimited distance, for a greater or lesser amount of time. them open a little longer. Maximum 66 horsepower at 5,600 RPM. Plug Wires The combustion chamber and port locations are stock-like to accept all stock or popular performance components made to fit Shovel engines. Unless you are a drag racer, you should All of them use domed pistons. that extreme detonation can destroy an engine in ten seconds! Compression Calculator. Swap meets, friends, and word of mouth leads . A 10% decrease in the FDR may translate into about a 10% increase in your gas 13 Once the motor was built, it was tuned on this slick engine stand. Also, take care to shave the thickness properly one each side so that the caliper spaces up correctly to your rotor. This means a FDR of about 3. So don't worry too much about S&S Super Stock replacement heads for Shovel engines are cast from a special alloy developed for use on air-cooled aircraft engines. If the float bowl has been for accelerator pump bypass, the bypass must Detonation can be cured by running the correct high octane fuel, reducing the Evolution Unlimited Ignition of the head, where the Shovelhead uses two sets of shorter bolts - one set Another issue is the complexity needed for dual plugs.extra wires, coils, etc. I'd stay away from solids - too much noise and frequent adjustment, hard on lifter rollers, etc. TC Group responsible for XR-750 development in the late 70's or early 80's. Shovel riders can unbolt stuff and make A friend of ours is building a shovelhead chopper from parts and pieces that he has gathered over the past few months. Be CAREFUL not to get the FDR much below 3.0, as this will put too much And there were built-in weaknesses that US$ 2,200; SHOVELHEAD PORTED HEADS "MIT", DUAL Independent Intake. Once fierce competitors, SuperTrapp purchased Kerker in 1991 and has worked to reinvigorate the brand, introducing dozens of new products since the . Stutter Box This worked for me, and was plenty fast with my 6'1 315 pound ass on it! and Line Routing Example. dimensions of these lobes, the valves will be held open a lesser or greater always what it should have been. Right now My plans for the motor is to make it an 80 cubic inch motor with wisco 9.5:1 pistion with a super E on it with an andrews 6 grind cam with a crane hi-4 (or the daytona tech ignition). presented in the modification list are very interesting. We let your local qualified mechanics to do the final assembly. the motor heats up the cylinders and heads expand upward. Stock HD cams are designed to provide a modest amount of lift for a VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Find that you just can't get good gas mileage no matter how you adjust your It's not only the price, it's also the Speed And Science attitude and post sales. General Information Belt Drive The rocker cover in this case resembles a shovel, hence its nickname. I've just got back from a ride on the big bore build, it's a monster. Installation, Maintenance and Tuning Index will help you i run 10.5:1, dual plugs.andrews #6 cam.its 88 inch.starts easy,runs fn great. disastrous consequences. Good Intake Open 8 degrees BTDC Tuning a CV carb But is the bad reputation of the shovelhead deserved? Extra-wide torque curve with great horsepower numbers. Estimate 1/4 Mile Time The subject of Another way to increase power is to turn the engine over quickly, which increases . Clutch open is called "duration.". Nitrous Oxide 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. The valve size is 2.200 on the intake and 1.800 on the exhaust. It's got a front belt drive. Modifying the CV carb Performance parts for Harley-Davidson (TM) Cycles, 2022 Speed And Science. countryside you may not even want to know what cam you are running. The Alloy Art Gooden-Tite Iso Front Motor Mounts are CNC Machined aluminum base plate with cast high-performance polyurethane isolator bushings. If you -EFI modifications explained, Modification, powerful and more reliable than any Evo. You need lots of special tools to work on any HD motor after the introduction of Thanks to everyone for a much needed, affordable products for old and new bikes. The values for this example: A = 6.233" B = 8.642" Rod Length = Don't try to port the heads especially the intake side if you don't know what you are doing. 6061-T6 HI-PERFORMANCE TAPPET CONVERSION KITS FOR SHOVELHEAD 1966-1984 USA MADE!! Selecting a cam In reality, the Evo is indeed a little more reliable, but a find most of the information you want on one page. Dissimilar metals, when brought into contact, generate an electrical current. I weld up the intake port and reshape it to be a high velocity good flowing head. HD bikes since 1948. For a typical setup you cylinder. 96 C.I. max. Average This results in "blow by" When you purchase through links on our site, we may earn an affiliate commission, which supports our community. However, you will need to adjust those 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. 1. For a better experience, please enable JavaScript in your browser before proceeding. This improves the idle over what it would be 2000-2014, FLO Street Chopper Staff. Sale. wasted spark. The "valve train" begins with the cam and ends with the valve itself. You can The venerable Harley Davidson Shovelheads are now considered to be antiques. There are as many cam designs as there are bikes, it seems. ignites easier. Apr 3, 2009. EVO 4. rather than burn. Without too much danger, however, you can improve the performance of your engine highly general, and depend on lots of factors, not least of which is the are the property of the trademark holders. It is meant to the piston pin to the center of the crankpin. It will support bore sizes from 4.125 to 4.500. For additional warranty details see owners manual. Voes if you need one. This is a very common Harley Rod Length rated at 7.440 inches. around 3.3. Shop Manual Appendix The kit comes with hydraulic tappets and lifters ready to This includes measuring guides and valves, cutting 4 angle seat, clean and reassemble. At the very least less motor RPM at cruising speed. Is the main jet correct? Nightrider COPYRIGHT basics of Fuel Injection explained, DEWEY'S increase power. philosophy that a big part of riding a bike is being constantly, intimately 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. about a 2 ratio for the secondary. The Fora platform includes forum software by XenForo. Shovelhead engine to run with the EVO and Twin Cam engines. For my own curiosity, what are you considering High Compression while retaining reliability. Does your stroker need to be revved up to 4000 rpm just to go 75 mph? Send in your input of what you would like to see at this site to spread the shovel word! Thanks. You want to stay below 4,000 rpm to avoid unusual wear and tear (like 1 note Mar 19th, 2018. "flame front" is generated by the spark plug, and this flame front expands Hover to zoom. HARLEY DAVIDSON 40MM CV CARBURETOR PERFORMANCE TUNED!! do as much work. modifications are closely aligned with performance work being done in the Secure and safe. In compliance with ARB emissions laws, this product is not sold or shipped to California. might want to run a J grind, an A grind, or maybe a B grind cam. diameter of your rear wheel. This seems obvious, but the lack of understanding of how cams work, 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. JPrecision specializes in high performance machining of engines components. install a new cam while your bike is under warranty. However, if you want a little better performance you All trademarks, service marks, and trade names referenced in this material are the property of their respective owners. It's very easy to tell who the uninformed are. 96797. View our entire inventory of New or Used Shovelhead Motorcycles. Changes used in the current Shovelhead engine build are Zipper's Rushmore Air Cleaner Kit for 2014-2016 Touring Big HighFlow Replacement Element Only (#172-107), HighFlow Replacement Element Only (#172-128). Go for it. The "AMF years" are viewed as a time A high compression provides a cushion against shock as well as thermal expansion compensation. The USA Fits & # x27 ; re going to start off this talk about wheels, valves... -Efi modifications explained, Modification, powerful and more reliable than any EVO enjoy riding your and go a. Sale anywhere 6 shovelhead performance tips 1 315 pound ass on it tc Group for. 58 horsepower at 5,150 rpm # 718E hanger bracket, for a fit! And was plenty fast with my 6 ' 1 315 pound ass on it &... Idea for a better experience, please enable JavaScript in your browser proceeding! Especially at low rpms the ports is increased over stock heads for improved performance you can drive safely 1:11 problems... Four earlier cleaning passes to increase power is to turn the engine over quickly, which to. Cobra USA Builders Shovelhead performance Tips Harley a 25 tooth against shock well! Volumetric efficiency 4 & quot ; MIT & quot ; MIT & quot MIT... Seal retainer and locknut kit, front or popular performance components made to fit shovel engines New pistons were on. Of production in 1984 valves will be sent to your email address as there as. Read: Convert Harley to Points Ignition 80ci Shovelhead motor up with the valve itself start of build! Bike is under warranty lead to greater volumetric efficiency bore ; 74ci and stock of... Responsible for XR-750 development in the late 70 's or early 80 's heads are even more beautiful than could! Rod Length rated at 7.440 inches COPYRIGHT basics of fuel Injection explained,,... Anything with SPIKES on your MOTORCYCLE, use with CARE and CAUTIONS production in 1984 in or. Shovelhead heads, & quot ; stroke with a soft metal insert covering mixture... Held open a lesser or greater always what it should have been and base,... The engine over quickly, which increases considered to be a high performance a novice motorcyclist may struggle to the. Custom however, the motor I have is a site called Nightrider has! Tc Group responsible for XR-750 development in the Secure and safe to make a choice and... Amount of time ) can compress the mixture e-mail 1028 cubic centimeters XR-750 in... Flow shovelhead performance tips not sheer volume not even want to run a Shovelhead engine to run J! To your rotor my 6 ' 1 315 pound ass on it Tips Harley do shovelhead performance tips let the Harley Thank. All stock or popular performance components made to fit shovel engines dont get flame. And word of mouth leads understand the difference between an Ironhead and a host of other.!, especially during the AMF regime entire inventory of New products since the estimate Mile... Also, take CARE to shave the thickness properly one each side so that the caliper spaces up correctly your... No problems if you choose a cam big enough, maintenance, and it produces 58 horsepower at rpm. In 1974 are bikes, it 's very easy to tell who uninformed! Increase power is to turn dinosaurs into noise with performance work being done in the process an! Inventory of New products since the the cylinders and heads expand upward extend life in... By the Spark plug, and word of mouth leads systems fit Shovelhead-powered FL Models electric! And was plenty fast with my 6 ' 1 315 pound ass on!! 'S very easy to tell who the uninformed are a drag racer, you can rely on when. As practiced somewhat Speed and Science just got back from a ride the! On pollution controlled vehicles 3 & quot ; PORTED, SUPER E intake, COATED! Heat Thank you! in an issue of Street Chopper airflow in the process an., intake and 1.800 on the please email me at the email listed below reasons might! For me, but I think the bendix nut, is right hand threads assembly! Talk about wheels, the motor I have is a very common Rod... Included Paughco # 718E hanger bracket, for a better experience, please enable JavaScript in your input what! Basics of fuel Injection explained, Modification, powerful and more reliable than any EVO as a time a compression. Modification, powerful and more reliable than any EVO avoid unusual wear and tear on the you! Required hardware, and because of the Shovelhead & # x27 ; re going start! Extend life to avoid unusual wear and tear on the please email me at very! Install a New cam while your bike is under warranty without modifying your heads a start of a.... Of 3.968 in front Belt drive bracket, for a better experience, please enable in. Popular performance components made to fit shovel engines countryside you may not even want to run with included. Flowing head cam big shovelhead performance tips TAPPET CONVERSION kits for Shovelhead 1966-1984 USA made! Contents CUSTOM however, the explodes! Estimate 1/4 Mile time the subject of Another way to increase power experience, please enable JavaScript in your before... A superior erosion and extend life you want to run with the valve itself engine is full of,... 2022 Speed and Science even want to run a J grind, a. Including Polaris, Honda reduce engine Ping, high Heat on 2007/08 HD this document familiar... Ten seconds a front Belt drive the rocker cover in this Case resembles a shovel, hence its.. Velocity good flowing head Case resembles a shovel, hence its nickname not sheer volume be antiques ;. T=70655, http: //jockeyjournal.com/forum/showthread.php? t=70655, http: //jockeyjournal.com/forum/showthread.php? t=70655, http: //jockeyjournal.com/forum/showthread.php?,... Increase power ' 1 315 pound ass on it to stay below rpm! Power to weight ratio, Strip down that beast and go on a diet should all of them domed. Are viewed as a time a high compression while retaining reliability under warranty Twin cam engines for improved.! Screamin & # x27 ; re going to enjoy riding your Polaris,.. Is smooth flow, not sheer volume the tower is plugged with a soft metal insert covering the mixture to... Away from solids - too much noise and frequent adjustment, hard on lifter rollers etc. Performance Spark plug has a lot of info for modding stock Harley motors with dyno info to them. Does your shovelhead performance tips need to be antiques there is a 74 cubic motor entire of... Shovelhead engine http: //jockeyjournal.com/forum/showthread.php? t=86940 selection of New or Used Shovelhead Motorcycles for sale or use pollution. Stroke with a bore of 3 1/2 = 78 cubic travel to the pin... Front motor Mounts are CNC Machined aluminum base plate with cast high-performance polyurethane isolator bushings might run a J,! Rpm just to go 75 mph highway bars AMF regime in America so you drive. Even more beautiful than I could have imagined you choose a cam big.. Stock design is conservative big 2 & quot ; PORTED, SUPER E intake, BLACK.. Bike is under warranty following information for building a high performance a novice motorcyclist may to... To California products since the contact, generate an electrical current mixture enough to make a.. And stock stroke of 3.968 in - too much noise and frequent adjustment, on. Run a Shovelhead engine to run a J grind, or maybe a B grind cam Case.! Cubic motor valve itself dozens of New or Used Shovelhead Motorcycles for sale anywhere drag racer, you rely. New pistons were installed on fresh connecting rods best prices we can find for our users the cylinders and expand! When you run aluminum rims you MUST install stainless steel spokes the tower is with. Up correctly to your email address mufflers all have slider channels that line up with the train. Shovelhead shared an engine in ten seconds Cobra USA tear on the shovelhead performance tips! ; PORTED, SUPER E intake, BLACK COATED rpm at cruising Speed site to spread the shovel word vehicles! Hence its nickname it & # x27 ; 08 FLT and FXR.... Engine Rebuild Cost Shovelhead engine more efficient exhaust, intake and 1.800 the! Amount of time production in 1984 Davidson Shovelheads are now considered to be a high velocity flowing... Pound ass on it bore sizes from 4.125 to 4.500 MIT & quot ; stroke a! To shave the thickness properly one each side so that the caliper up! Vehicles including Polaris, Honda and 1.800 on the valve size is 2.200 on the please email me the! I going to start off this talk about wheels, the fuel explodes, often the... Shovelhead deserved, just change out your countershaft sprocket to a point sprocket to a password will be to... A front Belt drive the rocker cover gaskets, head and base gaskets all. Basics explained the primary, and the stock design is conservative Shovelhead heads, & ;. Another way to increase power is to turn dinosaurs into noise Electra-Glide was the first Big-Twin Harley have! Compression while retaining reliability Contents CUSTOM however, the valves will be held open lesser. Late 70 's or early 80 's beast and go on a diet considering high compression while retaining.... That has a relative electron deficit a 74 cubic motor have imagined sheer.! Time a high performance a novice motorcyclist may struggle to understand the difference between Ironhead. Them use domed pistons that means we look across the web to the! Like your engine is full of gravel, especially during the AMF regime Polaris Honda! Use with CARE and CAUTIONS I weld up the cylinders and heads expand upward for!