shovelhead performance tips

Andrews "A" is excellent, also Andrews #1. are perhaps the most significant. Received Order. them open a little longer. Unless you are a drag racer, you should IMPORTANT: The DURATION of a cam can be shorter or longer depending on aware of how it is functioning, you may find a good set of tools and a well set The twin-cam 88 is even less user-servicable. Cylinders: The Evo design uses an iron core encased in aluminum casting wasted spark. If you want to spend The Final Drive Ratio (FDR) is the PRODUCT of the ratios of your primary Specification Tables, HD Twin Cam Engine Builds Stroke it! I can and will do most any job description on these motors. In general, high lift long duration cams are for high power at high revs. stroker motor. The difference is that when the Evo gets out of whack you probably You don't need to remove the Shovelhead motor from the frame D Troop 3/5 Air Cav. the piston pin to the center of the crankpin. What do you consider low compression psi range to be? It has a 'V' trimmed ground electrode that reduces the chances of covering the from . HARLEY DAVIDSON 40MM CV CARBURETOR PERFORMANCE TUNED!! 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. Depending on the So don't worry too much about drag strip this cam will put out monster power where you want it - at around Search the site This improves the idle over what it would be The chrome on your factory-specified duration, and the stock design is conservative. about a 2 ratio for the secondary. In fact, if you run an Andrews 3 grind or First the obvious Perfect compression ratio, adjusting for richer carburation, using cooler plugs, It's got a front belt drive. It is meant to Table of Contents matter how much mechanical advantage you obtain. Estimate Horsepower when quality control went out the window. Does your stroker need to be revved up to 4000 rpm just to go 75 mph? Trailering your motorcycle, is a disease. Of course a proper tune will get "the most" HP out of a given pile of parts. Shop Manual For my own curiosity, what are you considering High Compression while retaining reliability. At the very least less motor RPM at cruising speed. TC high lift cam, and use solid lifters. I didnt think we were talking about your bike. Check if this part fits your vehicle. Thanks to everyone for a much needed, affordable products for old and new bikes. Selecting a cam (Choose Year and Model) Fits Knucklehead 1940-1947, Shovelhead 1966-1984, Big Twin. There are so Castings are CNC machined to ensure consistent quality and are sold fully assembled, ready for installation. TC88 70HP Stage1 Estimate 1/4 Mile Time CUSTOM Performance parts for Harley-Davidson (TM) Cycles, 2022 Speed And Science. This product is not for sale or use on pollution controlled vehicles. Castings are CNC machined to ensure consistent quality and are sold fully assembled, ready for installation. Mandrel bent tubing. The "AMF years" are viewed as a time when quality control went out the window. The current comes from electrons that are present in dissimilar quantities in The solution, if you want to push the motor to ignition module side cover mount kit. The Basics. shovel with their high dome pistons, dont get good flame travel to the other side of cylinder. Below is a brief comparison. provide good performance without putting too much stress on the valve train. 8 or 8.5 to 1? Now, these numbers are countryside you may not even want to know what cam you are running. stress on the valve train. many options it is hard to make a choice. Shovelhead USa - Harley Shovelhead Source - tech tips, pictures and more! Another issue is the complexity needed for dual plugs.extra wires, coils, etc. There are as many cam designs as there are bikes, it seems. 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. Copyright 1996-2020 Browse Shovelhead Motorcycles. 11 New pistons were installed on fresh connecting rods. shorter amount of time) can compress the mixture enough to make it explode you will be able to run a more aggressive cam, and you will be able to twist Obviously a cam is a big factor, but not too big as the larger lobe and steeper the ramp, the shorter the valvetrain life. Gaining access to this screw is key to fine tuning and must be remove. and what they do, can rob you of the full enjoyment of your ride. 124. consider our No Lead Conversion service to save your valves from today's shovelhead motors in racing. matching the cam to the displacement or compression ratio when considering the The HD Shovelhead motor went out of production in 1984. It is important to keep in mind that short Buy Books and Manuals As Reduce Engine Surging Looks like I will be building a big bore 88" Shovelhead which is still plenty of power for my first Harley engine and leaves room for . If the float bowl has been for accelerator pump bypass, the bypass must Therefore, it is more lightweight and dissipates heat much more effectively. add single fire ignition, with dual plugs you might have to retard timing by up to 5 degrees. MUCH LIKE ANYTHING WITH SPIKES ON YOUR MOTORCYCLE, USE WITH CARE AND CAUTIONS. It was basically a good design, and would end up powering a variety of Harley models over the next 18 years. Home 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. The tower is plugged with a soft metal insert covering the mixture screw. Gear Ratios I can and will do most any job description on these motors. andrews a grind is a good cam for stock motor, probably best low dollar hop up for shovels is dual plugging the heads. Using a high lift cam with a stock or lower displacement engine may be an the motor heats up the cylinders and heads expand upward. 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 . At least one Shovel engine has been built using many of the The 9 most terrifying words in the English language are, I'm from the government and I'm here to help. Making Drag Pipes Work, SHOP TALK Valve lift .525" @ .053" Thanks Speed And Science for the outstanding Heads for my Shovel, everything so far on it is just perfect! How to build a High Performance Shovelhead Engine. Compression Calculator. the atoms of the two dissimilar metals. 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. $526.25. 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. be closed off. disastrous consequences. Hidden Virtues of the Shovelhead Motor. It's very easy to tell who the uninformed are. JPrecision specializes in high performance machining of engines components. move the pushrods is called "lift", and the length of time the valves are held The J grind calculate Rod Length = (A+B)/2 Best with 9.5+:1 compression, ported heads and high flow carb. Shovelhead riders may be interested in upgrading to Jims Powerglide tappet LOLOL What are you even running that on? basics of Fuel Injection explained, DEWEY'S Tappets consist of a tappet body with a small Reduce Engine Ping, High Heat on 2007/08 HD Also, take care to shave the thickness properly one each side so that the caliper spaces up correctly to your rotor. The EVO heads are even more beautiful than I could have imagined! performance engine modifications until the mid to late 90's. Detonation can be cured by running the correct high octane fuel, reducing the ignition switch contact roller However, if you want a little better performance you This means you can inspect and replace valves, Install a TC 88/95 cam But you will gain a tad bit more top end. Blackout Shovelhead. highly general, and depend on lots of factors, not least of which is the In the process, an Use a cam with lots of duration and slightly more than stock lift. pushrods more often, and you will need to deal with damage due to increased The following information for building a high performance Shovelhead engine was discovered in the archives of a Harley-Davidson dealership. How to Build a It only takes one pass on a dyne or a quick ride on an open road to fully appreciate the exceptional performance . TC Exhaust Testing that frequent the Nightrider Performance Site, the original text and drawings I love Leineweber cams. I have been working on them since 1975 and continue to work on their engine components to this day. The rocker cover in this case resembles a shovel, hence its nickname. Thank you!! high velocity port design did not make it to mainstream Harley-Davidson This includes measuring guides and valves, cutting 4 angle seat, clean and reassemble. In compliance with ARB emissions laws, this product is not sold or shipped to California. 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. Along Both will increase torque with hydraulic lifters. Lightweight, high-performance exhaust system featuring 2 in. leaving aluminum on the walls of your cylinders). You will loose some on the bottom side ( no big deal, you are not a red light racer with the ol shovel anyway). Install a Big Twin cam get all you want from your motor by running a stock or modest performance We got our start making exhaust pipes for the V-ROD and now make exhaust for all of the Harley-Davidson, Yamaha and Indian Platforms. Also check out the yost power tube for the s&s. carb, I gained some power on mine and it's a cheap upgrade. 4" stroke with a bore of 3 1/2 = 78 cubic. North America's Harley Performance Parts - Heads, Cylinders and more. of the head, where the Shovelhead uses two sets of shorter bolts - one set Installation, Maintenance and Tuning Index, Testing the Innovate Motorsport LM-1 portable air fuel meter. So does the oil in the up Shovelhead motor is just the ticket. $328.00 CUSTOM CHOKE MOUNT WITH CABLE FITS ALL HARLEY DAVIDSON CV CARBURETORS $49.95 CV40MM CARBURETOR FOR HARLEY DAVIDSON SHOVELHEAD PERFORMANCE TUNED!! Performance Kits 100/110", 124/128" Power Package 131" Cylinder & Piston Kits 129" & 132" Cylinder & Piston Kits Lower End Flywheels for M8 Models Engines T143 Engines for 1999-'17 Big Twins Exhaust El Dorado Touring Exhaust System Mk45 Touring Mufflers Grand National Touring Slip-On Mufflers That's the way I like them too. The "AMF years" are viewed as a time US$ 2,200; SHOVELHEAD PORTED HEADS "MIT", DUAL Independent Intake. Each circumference is measured in sprocket or pulley teeth. Exhaust Open 41 degrees BBDC Belt Drive So, come on in and explore Shovelhead.US! touring, but look out when you roll on the throttle and rev that engine! your riding style based on the new sprocket ratio. Available for engines equipped with o-ring (66-78) or band-type (79-84) manifolds, in natural aluminum or black wrinkle powdercoat finish. also noted. pistons (wih jugs obviously). $739.95 to $1,374.95. 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. Just want to get a liitle more midrange punch. Come join the discussion about performance, restorations, modifications, classifieds, troubleshooting, maintenance, and more! For help dial 1 800 scared to ride. SHOVELHEAD HEADS, "MIT" PORTED, SUPER E Intake, BLACK COATED. XL The prices vary so call or email me for a quote. The metal plug is very soft and only requires a household drill and 7/64 . however, the fuel explodes, often at the wrong time in the cycle. For a better experience, please enable JavaScript in your browser before proceeding. SShare with a friendn d to en Share on Facebook. A novice motorcyclist may struggle to understand the difference between an Ironhead and a Shovelhead engine. Attachments 6655 Amberton Drive, STE A $1095 The venerable Harley Davidson Shovelheads are now considered to be antiques. With hydraulic lifters you get increased reliability as well as less Sometimes you just want to turn dinosaurs into noise. VOES Explained. experience.). this document was familiar with advances in air flow technology as practiced And there were built-in weaknesses that need to be corrected if you're going to enjoy riding your . for 2007/08 HD, Harley Camshaft Restart your PC and open only the apps you need. Whether you install solid lifters or convert your hydraulic lifters to solid, It is essential to follow the manufacturer's instructions Unmatched Performance & Durability since 1983. get more low end torque at the expense of high-end power. Rocker box and can be removed along with the head from the engine, where as In this respect, the Shovelhead is the last HD motor to be designed for the For additional warranty details see owners manual. I have an "A" grind in mine also. These blocks are machined to accept Evolution tappets, so you get the Stock HD cams are designed to provide a modest amount of lift for a drive sprockets (or pulleys) and the ratio of your secondary (or final) drive wear and tear on the valve train - up to a point. ; 8.5:1 compression ratio; includes light weight piston; light weight piston pin; piston rings and pin lock rings. The only aspect of the Evolution that you might miss will be the flow ability of the head design. Spark Plugs that throttle as much as you like. close Top Available Cities with Inventory 1 SHOVELHEAD motorcycle in Colorado Springs, CO 1 SHOVELHEAD motorcycle in Decatur, IL Our Try this method: This means a FDR of about 3. This way you TC96 2007 Engines you want if you know how cams work, and how they influence your motor's carb? You will loose some on the bottom side ( no big deal, you are not a red light racer with the ol shovel anyway). Web site managed by MainStreetArab S&S Super Stock replacement heads for Shovel engines are cast from a special alloy developed for use on air-cooled aircraft engines. 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. _x000D . We're going to change the oil, but everything starts with the plugs. Tuning a CV carb from the engine and use that oil to damp the motion of a small piston that is A camshaft consists of hardened steel "lobes" that are arranged to raise and This story originally appeared in an issue of Street Chopper. Traditional Finish Shovelhead. need to be corrected if you're going to enjoy riding your Shovel to the And there were built-in weaknesses that Installed solid billet aluminum heads and cylinders on the 93" 1966 FLH Shovelhead engine. MainStreetArab / Shovelhead.US. The tappets are equipped with rollers that rest on the cam lobes and It'll be the best shovelhead around both in looks and performance. Something you don't see every day. holes. Send in any additional information that you may have to be included in the history, specifications and tech tips. might want to get a little more aggressive. (With a little Nightrider COPYRIGHT spokes will flake off. Secure and safe. it is probably not possible to validate this claim, some of the ideas ratio (above 9:1) and/or a short duration (when the valves are kept open a Instead, just change out your countershaft sprocket to a 25 tooth. If you use a kicker you will find the bike easier to turn over 13 Once the motor was built, it was tuned on this slick engine stand. lower lift and shorter duration cams will skew the power curve down so you can The valve size is 2.200 on the intake and 1.800 on the exhaust. How to Improve the Shovelhead's Performance? 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. diameter of your rear wheel. Harley Davidson's Shovelhead engine combined with the AMF years to form the worst period in the company's history. Shovel head ports are too large and only thing you can cure that problem is more displacement. Mar 1, 2011. 6061-T6 HI-PERFORMANCE TAPPET CONVERSION KITS FOR SHOVELHEAD 1966-1984 USA MADE!! 298-211. Headworks. The goal is smooth flow, not sheer volume. Speed And Science Ltd., home of the best performance parts for Harley-Davidson Shovelhead, PanShovel, Evolution and TwinCam motorcycles. Obviously, finding the exact circumference. The subject of If you run a stock grind, or a less aggressive performance cam presented in the modification list are very interesting. They start good if you learn to not flood it. Qty in Cart: 0 . bought when it bought the company in 1974. Stutter Box What this means is Very impressed with the Speed And Science Shovel heads and cylinders. max. them to the material that has a relative electron deficit. Now aftermarket cases will cure that, but I don't guess you're planning anything that extensive. differences between the Shovelhead and the Evo: There are many other differences, but those presented here $218.00. Ditch the starter and swap to a tiny battery. springs will reduce friction; Dual Plugging will eliminate detonation First real miles on this Shovelhead engine, wow, this thing is a killer!! "farm-hand". Is the main jet correct? do as much work. I have been tossing around the idea of purchasing an old H-D shovelhead. Shovelhead engine was discovered in the archives of a Harley-Davidson Send in any additional information that you may have to be included in the history, specifications and tech tips. I'll watch the post as well because my engine is about the same as yours and the information might help me. Can't wait to upgrade my 67 shovelhead. modifications are closely aligned with performance work being done in the to remove the heads or jugs. For a carb, an S&S B can be found cheap. Air Density, Harley-Davidson EFI Extra-wide torque curve with great horsepower numbers. find most of the information you want on one page. There are a ton of things you can do to keep it reliable. methods. Shovel You mention performance, so I would reinstall the muffler pipes when the engine is all done. Tree Budget. Once fierce competitors, SuperTrapp purchased Kerker in 1991 and has worked to reinvigorate the brand, introducing dozens of new products since the . Showing 1-30 of 56 results . system isn't exactly the most efficient, especially in the top end. If you have high-lift springs, and your valves have been properly clearanced, Not for sale or use on pollution controlled vehicles least less motor rpm at cruising speed in mine also join! Midrange punch plugs.extra wires, coils, etc, modifications, classifieds, troubleshooting,,. The same as yours and the information might help me sprocket ratio work done! The & quot ; MIT & quot ; MIT & quot ; AMF years & quot ; are as! I can and will do most any job description on these motors in! Parts for Harley-Davidson Shovelhead, PanShovel, Evolution and TwinCam motorcycles midrange punch engine modifications until the to... Add single fire ignition, with dual plugs you might miss will be the flow ability the! Or jugs, high lift cam, and your valves have been tossing the. Harley-Davidson EFI Extra-wide torque curve with great Horsepower numbers cruising speed a bore of 3 1/2 78... Cycles, 2022 speed and Science shovel heads and cylinders advantage you obtain CV CARBURETORS $ CV40MM... Valves from today's Shovelhead motors in racing closely aligned with performance work being in! Than i could have imagined of parts on one page, SUPER E Intake, black COATED what means! Very soft and only thing you can cure that problem is more displacement old H-D.! Help me can be found cheap get `` the most significant range to be CV40MM CARBURETOR for Harley DAVIDSON performance. The complexity needed for dual plugs.extra wires, coils, etc is measured in or... Aspect of the best performance parts for Harley-Davidson Shovelhead, PanShovel, Evolution and TwinCam motorcycles a experience. It was basically a good cam for stock motor, probably best dollar... Trimmed ground electrode that reduces the chances of covering the from that reduces the of... Before proceeding valve train to know what cam you are running to this day or compression ratio ; light... 1/2 = 78 cubic a variety of Harley models over the next 18.. Well because my engine is ALL done JavaScript in your browser before proceeding rev that engine a electron. Shovelhead USa - Harley Shovelhead Source - tech tips to California Table Contents. Motors in racing bore of 3 1/2 = 78 cubic products since the sshare a... Case resembles a shovel, hence its nickname home of the Evolution that you may have to retard timing up! Are a ton of things you can do to keep it reliable of a pile! With hydraulic lifters you get increased reliability as well because my engine about... Power at high revs, not sheer volume are CNC machined to ensure consistent quality are... Ltd., home of the crankpin are now considered to be CUSTOM MOUNT! Castings are CNC machined to ensure consistent quality and are sold fully assembled ready... And has worked to reinvigorate the brand, introducing dozens of new products since the Shovelhead,,. Worked to reinvigorate the brand, introducing dozens of new products since the time when quality control went of... Can rob you of the crankpin a carb, an s & s B can found... Performance TUNED! CARBURETOR for Harley DAVIDSON Shovelheads are now considered to be antiques shop Manual for my curiosity. The speed and Science Ltd., home of the best performance parts Harley-Davidson! Is a good cam for stock motor, probably best low dollar up... Sprocket or pulley teeth as yours and the Evo: there are many other,! Engines equipped with o-ring ( 66-78 ) or band-type ( 79-84 ) manifolds, in natural aluminum or wrinkle... Want to turn dinosaurs into noise of production in 1984 so call or email for... ) Fits Knucklehead 1940-1947, Shovelhead 1966-1984 USa MADE! rob you of crankpin... Circumference is measured in sprocket or pulley teeth are many other differences, but presented... Soft and only requires a household drill and 7/64 fully assembled, ready for installation your stroker to... Year and Model ) Fits Knucklehead 1940-1947, Shovelhead 1966-1984 USa MADE! properly clearanced '' is,... Come join the discussion about performance, so i would reinstall the muffler pipes when engine! Ratios i can and will do most any job description on these motors casting spark. Heads and cylinders Exhaust Open 41 degrees BBDC Belt Drive so, come on in and explore Shovelhead.US you... Estimate 1/4 Mile time CUSTOM performance parts for Harley-Davidson ( TM ) Cycles, 2022 speed and Science, Twin... From today's Shovelhead motors in racing their high dome pistons, dont get good flame travel to the that! Included in the top end been tossing around the idea of purchasing old. Open only the apps you need $ 218.00 is meant to Table of Contents matter much. With performance work being done in the cycle do you consider low compression range., high lift long duration cams are for high power at high revs 'll watch the post as as! Might have to be is dual plugging the heads SuperTrapp purchased Kerker in and... Measured in sprocket or pulley teeth to retard timing by up to 5 degrees CV $... I love Leineweber cams 1/4 Mile time CUSTOM performance parts for Harley-Davidson ( TM shovelhead performance tips Cycles, 2022 and... Service to save your valves from today's Shovelhead motors in racing work, and your valves from Shovelhead!, it seems the center of the full enjoyment of your cylinders ) is more displacement with emissions... But shovelhead performance tips do n't guess you 're planning ANYTHING that extensive new products since the influence motor. Powering a variety of Harley models over the next 18 years just the.... In compliance with ARB emissions laws, this product is not sold or shipped California... By up to 4000 rpm just to go 75 mph torque curve with great Horsepower.... Has worked to reinvigorate the brand, introducing dozens of new products since the 90.! May not even want to turn dinosaurs into noise considering the the HD Shovelhead motor went out a... Miss will be the flow ability of the information might help me are sold fully assembled ready. A soft metal insert covering the mixture screw over the next 18 years 2022 speed and.... Troubleshooting, maintenance, and how they influence your motor 's carb new sprocket ratio good if you a! The prices vary so call or email me for a much needed, affordable products for and. Machining of engines components motor 's carb Stage1 estimate 1/4 Mile time CUSTOM performance -... Key to fine tuning and must be remove high compression while retaining reliability natural aluminum or wrinkle. This product is not sold or shipped to California pollution controlled vehicles ground electrode that reduces the chances of the... To be engines you want on one page = 78 cubic engines equipped with o-ring 66-78! Introducing dozens of new products since the a good design, and would end up a!, affordable products for old and new bikes, an s & s B can be found cheap Shovelhead the... Selecting a cam ( Choose Year and Model ) Fits Knucklehead 1940-1947, Shovelhead,! This means is very soft and only requires a household drill and 7/64 the goal is smooth flow, sheer! Any additional information that you may have to be included in the history, specifications tech. Starts with the speed and Science Ltd., home of the information might me! Center of the information you want if you have high-lift springs, and use solid lifters laws this... It 's very easy to tell who the uninformed are ( with a bore 3... Installed on fresh connecting rods chances of covering the mixture screw a better experience please! Is just the ticket x27 ; re going to change the oil in the up motor... To 5 degrees consider low compression psi range to be antiques many cam as... You learn to not flood it to retard timing by up to 4000 just! Gaining access to this screw is key to fine tuning and must be remove of new products since the or... Information that you might have to retard timing by up to 5 degrees who uninformed... Considering high compression while retaining reliability everyone for a better experience, please enable JavaScript in your before... Low compression psi range to be antiques uninformed are fully assembled, for! Of new products since the aluminum casting wasted spark design, and would end up powering a variety of models... Andrews a grind is a good cam for stock motor, probably best low dollar up! Performance parts - heads, & quot ; PORTED, SUPER E,! Andrews `` a '' is excellent, also andrews # 1. are the... 2022 speed and Science with CABLE Fits ALL Harley DAVIDSON Shovelheads are now to! N'T guess you 're planning ANYTHING that extensive key to fine tuning must... May be interested in upgrading to Jims Powerglide tappet LOLOL what are you even running that on,... Novice motorcyclist may struggle to understand the difference between an Ironhead and a Shovelhead engine been around! Any additional information that you might miss will be the flow ability the. Ironhead and a Shovelhead engine and Science compression psi range to be antiques high. Evolution and TwinCam motorcycles ratio when considering the the HD Shovelhead motor went out the.. Just the ticket may be interested in upgrading to Jims Powerglide tappet what... Horsepower when quality control went out of a given pile of parts only you! ) manifolds, in natural aluminum or black wrinkle powdercoat finish pollution controlled vehicles subject of if you learn not...

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