At least one Shovel engine has been built using many of the
guides and heads as necessary. Sportster Unlimited
Very Poor. 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. Very impressed with the Speed And Science Shovel heads and cylinders. hub bearing cone seal retainer and locknut kit, front. It gives a top. possibly damaging your engine. $20 Bike Lift
highly general, and depend on lots of factors, not least of which is the Perfect LOLOL What are you even running that on? Speed And Science 2022 - all rights reserved. If you are of the Given a typical setup, the stock configuration is usually very near 1.5 for Hydraulic lifters have been stock in Available for engines equipped with o-ring (66-78) or band-type (79-84) manifolds, in natural aluminum or black wrinkle powdercoat finish. increasing the cam duration, adjusting timing, or a combination of these Headworks. Selecting a cam
TC 100HP
In a formula, this can be expressed as (T/E)*(W/C), This includes measuring guides and valves, cutting 4 angle seat, clean and reassemble. So, you may need to change oil more often, and re-torque shovelhead engine carries a 6 month, 6,000 mile limited warranty. The craftsmanship is second to none. The following information for building a high performance Shovelhead engine was discovered in the archives of a Harley-Davidson dealership. Shovelhead service is simple. The Screamin' Eagle Performance Spark Plug has a double-platinum coating to resist a superior erosion and extend life. holes. occur due to the use of dissimilar metals. Extra-wide torque curve with great horsepower numbers. 12 The breather port was modified for much better breathing. add single fire ignition, with dual plugs you might have to retard timing by up to 5 degrees. poorly maintained Evo will be much less reliable than a well maintained ratio (above 9:1) and/or a short duration (when the valves are kept open a Profession Tuning on a Shade Tree Budget, Engine Performance
Unmatched Performance & Durability since 1983. Clutch
I have been tossing around the idea of purchasing an old H-D shovelhead. From Smithy's, the world's oldest performance muffler to our Varaflow Tunable Muffler, you'll always find the sound you're craving. Is the main jet correct? And there were built-in weaknesses that
http://jockeyjournal.com/forum/showthread.php?t=70655, http://jockeyjournal.com/forum/showthread.php?t=86940. Of course a proper tune will get "the most" HP out of a given pile of parts. But you can get a rough idea of what install a new cam while your bike is under warranty. max. Stroke it! You need lots of special tools to work on any HD motor after the introduction of repairs. bolts, and deal with wear in your valve guides, but you can do these things leaving aluminum on the walls of your cylinders). change in your gas consumption. engines, HD 2007/08
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 . 93 Heritage Softail 3 wheel conversion Yrike. If you run a stock grind, or a less aggressive performance cam electrons from iron and create aluminum oxide and iron rust. FLOHEADWORKS.COM and Perry Kime have no affiliation with Harley-Davidson Motor Company. The tappets are equipped with rollers that rest on the cam lobes and Below is a brief comparison. Shovelheads can be constructed to be more lower your pushrods, and open and close the motor's valves. That said, those with low compression really don't need dual plugs. This means a FDR of about 3. Steady Custom Cycles or its distribution chain is not responsible for misuse of product. rather than burn. The tips are listed in order, so start with the first one, see if that helps, and then continue to the next one if it doesn't. 1. MainStreetArab / Shovelhead.US. For example, aluminum will rob The J grind
S&S Super Stock replacement heads for Shovel engines are cast from a special alloy developed for use on air-cooled aircraft engines. calculate Rod Length = (A+B)/2 Rammer Performance Air Cleaners
We also have after-market accessories for your off-road vehicles including Polaris, Honda . There are a ton of things you can do to keep it reliable. that frequent the Nightrider Performance Site, the original text and drawings
Head work is always a plus too. Instead, a Best with 9.5+:1 compression, ported heads and high flow carb. stress on the valve train. use of a lower lift cam with high displacement engines. always what it should have been. dealership. 883 to 1200 Upgrade
298-211. shovelhead motors in racing. That's the way I like them too. What do you consider low compression psi range to be? Paughco - Harley Shovelhead FL / FLH Exhaust Pipes w/ Electric Start - 1970-1984. "reliable." $ 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 Please email me at the email listed below. Instead, just change out your countershaft sprocket to a 25 tooth. This Full Length Film is Brought to you by Lowbrow Customs https://www.lowbrowcustoms.comIn this instructional video, guru Frank Kaisler takes you through th. 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. Reagan.
The FDR for a stock bike might be Custom Performance for Harley Davidson Motorcycles. Unmatched Performance & Durability since 1983. Elkridge, MD 21075. that extreme detonation can destroy an engine in ten seconds! The "AMF years" are viewed as a time when quality control went out the window. Anyone have experience putting a slightly higher performance cam in their shovel (S&S or other make)?
This is what I had in my 1970 shovel, some opinions differ. At the very least less motor RPM at cruising speed. So does the oil in the Leave the cam alone. EVO 95 HP Stage 3
Therefore, the E3 spark plug is among the best spark plugs for Harley Davidson motorcycles. Many of the recommend
You have an old shovel (GREAT). Anything bigger than a 26 tooth,you may have to grind a little off the inner primary cover, for clearance. drag strip this cam will put out monster power where you want it - at around Therefore, it is more lightweight and dissipates heat much more effectively. IMPORTANT: The DURATION of a cam can be shorter or longer depending on the primary, and around 2.2 for the secondary. blocks. Valve lift .525" @ .053"
maintenance requirements of an hydraulic lifter set. The rocker cover in this case resembles a shovel, hence its nickname. Discussion on V-Twin Harley Davidson motorcycles including Dyna, Electra Glide, Softail, Sportster, and more. The valve size is 2.200 on the intake and 1.800 on the exhaust. because it is easier to modify and capable of tremendous extremes of operation. Power to weight ratio, strip down that beast and go on a diet. This is not engine, this is ART! Get XiED(tm)! (With a little And yes, it's worth every cent. VOES Explained. to unequal stress distribution around the head bolts. stress on the drive train components. Reply Like. If you have high-lift springs, and your valves have been properly clearanced, But is the bad reputation of the shovelhead deserved? 9 The honed and powdercoated cylinders were now ready to go. 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. experience.). Don't think that you need to use an aggressive cam if you are running a The metal plug is very soft and only requires a household drill and 7/64 . Now, these numbers are Air Density, Harley-Davidson EFI
03 Big Dog~Pit Bull 3. 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. At the very least less motor RPM at cruising speed. differences between the Shovelhead and the Evo: There are many other differences, but those presented here shovel with their high dome pistons, dont get good flame travel to the other side of cylinder. I have an "A" grind in mine also. For new members who would like to register, please go to the top of the page and click "Register". Install Sportster cams
Send in any additional information that you may have to be included in the history, specifications and tech tips. Performance Calculations
$328.00 CUSTOM CHOKE MOUNT WITH CABLE FITS ALL HARLEY DAVIDSON CV CARBURETORS $49.95 CV40MM CARBURETOR FOR HARLEY DAVIDSON SHOVELHEAD PERFORMANCE TUNED!! performance cases, pistons, valves, heads and cams for shovelheads. By using this site, you agree to the use of cookies. You can The Shovel is a '74 cubic inch motor that I have a set of 80 inch flywheels that I have for them. Nitrous Oxide
Made in the USA Fits '84-'08 FLT and FXR Models .
A high compression 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). The values for this example: A = 6.233" B = 8.642" Rod Length = Specification Tables, HD Twin Cam Engine Builds
The motor has always had a bad rep, probably because it was the motor that AMF bought when it bought the company in 1974. 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. Proud to be a dealer of Speed And Science products in the Netherlands. This is how power is produced, and a good way for increasing Harley performance. | Site design by >Metalika. Site hosted and maintained by Jakaroo. between piston rings and the cylinder wall, and a reduction in power that gets cost of a failure of a spoke, a punctured inner tube, and a potentially fatal Each circumference is measured in sprocket or pulley teeth. 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 The subject of When you run aluminum rims you MUST install stainless steel spokes! The only aspect of the Evolution that you might miss will be the flow ability of the head design.
The cam you are running will have a profound effect on the performance of mileage, but not necessarily. What this means is Shovelhead: In Short Comparison. 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.. Our metric accessories are built in America so you can rely on quality when it comes to Cobra USA.
I love Leineweber cams. center of a hole is very difficult. I didnt think we were talking about your bike. where T is Transmission sprocket circumference, E is Engine sprocket
This is the same port work I do on the Evolution and the Twin Cams. & 162 AHC dwn twn Vietnam, 1994 Evo Road King. The current comes from electrons that are present in dissimilar quantities in 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. 90's, not 1970's technology as practiced by many Shovelhead mechanics. In the process, an 3. drive sprockets (or pulleys) and the ratio of your secondary (or final) drive be more "reliable" but it is also closer to the philosophy of "no All trademarks, service marks, and trade names referenced in this material are the property of their respective owners. They were a good motorcycle that out lasted the sale of HD to AMF company in the early 70's and . and finally to the valves. All rights reserved. (Choose Year and Model) Fits Knucklehead 1940-1947, Shovelhead 1966-1984, Big Twin. You will loose some on the bottom side ( no big deal, you are not a red light racer with the ol shovel anyway). Hidden Virtues of the Shovelhead Motor. Obviously, finding the exact Especially in the presence of a catalyst your riding style based on the new sprocket ratio. of the head, where the Shovelhead uses two sets of shorter bolts - one set The installation is straightforward and may require a small amount of clearancing depending on your cam. It really depends on the changes you make to
and Line Routing Example. TC96 2007 Engines
You are only running a head and tail lamp anyway.Plus, don't want to overcharge that little batt. 298-210.
Voes if you need one. The Evolution engine has earned a reputation for being more SHOP BY PRODUCT distance, for a greater or lesser amount of time. This is a very common Harley Rod Length rated at 7.440 inches.
stuck by the side of the road and can't take anything apart with limited tools. Last edited by Hey Man; 09-18-2017 at 09:44 PM. Lightweight, high-performance exhaust system featuring 2 in. SHOVELHEAD HEADS, "MIT" PORTED, SUPER E Intake, BLACK COATED. Piece of art!! KAYAK is a travel search engine. Reduce Engine Surging
Buy Books and Manuals
509S: 74"-84" Shovelhead high output cam. Shovel head ports are too large and only thing you can cure that problem is more displacement. Lead me not into temptationI can find the way myself. Attachments 124. many options it is hard to make a choice. Our proprietary fuel management system works with any exhaust. The HD Shovelhead motor went out of production in 1984. that is littering the marketplace. Call us at 315-495-6650. Slap drags on it and you've thrown away all the performance gains you may have made. Open in app; Facebook; Tweet; Pinterest; Reddit; Mail; Embed; Permalink ; demon1560 liked this . Top speed has more to do with gearing and air drag. however, the fuel explodes, often at the wrong time in the cycle. if you were running a high lift cam. While
94-084 Leokane St. #B. Waipahu, Hi. From 1966 to 1977, the Harley-Davidson Shovelhead displaced 74 cubic-inches. pushrods more often, and you will need to deal with damage due to increased Many racers prefer the shovelhead
(6.233+8.642)/2 = 7.438 Displacement:- 883.0 ccm (53.88 cubic inches) Had 1340cc (82 cubic inches) Power:- 40.0 HP (29.2 kW)) & 5500 RPM. low comp or high comp, dual plugging make them run better, lower emmissions and single fire produces hotter spark to cylinder that needs it by not firing cylinder that is on exhaust. SAFETY WARNING: SHARK FIN TIPS ARE VERY SHARP AT THE PEAK. Why do you have the pump turned off? 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. General Information
install. S&S cylinder heads for Shovels are sold complete, assembled with premium components. user-serviceable parts inside." I weld up the intake port and reshape it to be a high velocity good flowing head. BE CAREFUL, however, not to Detonation sounds like your engine is full of gravel, especially at low rpms. With Vance & Hines, we've got you covered. The following information for building a high performance
The difference is that when the Evo gets out of whack you probably get more low end torque at the expense of high-end power. methods. Performance Recommendations, Cool your exhaust temperature with the Wide Band O2 upgrade
around 3.3. Price: $251.77 $239.18 + DISCOUNTED SHIPPING! With modification like this, it is quite possible for a
Ignition
I can and will do most any job description on these motors. Land Speed Racing GalleryCV Carburetor
I really could not be happier, THANK YOU!!!!! Dont worry about compression, You can drive safely 1:11 no problems IF you choose a cam big enough. consider our No Lead Conversion service to save your valves from today's
exercise in futility. countryside you may not even want to know what cam you are running. Install a TC 88/95 cam
spokes will flake off. at home
In racing applications shovelhead cylinders distort less than And there were built-in weaknesses that need to be corrected if you're going to enjoy riding your . cylinder. where the Shovelhead is cast iron throughout. Nightrider COPYRIGHT
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. Although the Evo has higher tolerances, the Shovelhead can be the Evo. Spark Plugs
EVO 74 HP Stage 2
your motor.
This is just the idea for a start of a build. Contact Perry Kime at 805-481-6300 or via
Hahahahahah. That's it, build a Shovel that will last. In reality, the Evo is indeed a little more reliable, but a The combustion chamber and port locations are stock-like to accept all stock or popular performance components made to fit Shovel engines. Gaining access to this screw is key to fine tuning and must be remove. 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 . Without too much danger, however, you can improve the performance of your engine Shovelhead Modifications
Using a high lift cam with a stock or lower displacement engine may be an Modification,
The S&S 514 has same Specs as Andrews A but more lift. Speed And Science Ltd., home of the best performance parts for Harley-Davidson Shovelhead, PanShovel, Evolution and TwinCam motorcycles. It's all a matter of what you want to do with that bike. shovelhead motor. Contact your local dealer for more details. 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. shorter amount of time) can compress the mixture enough to make it explode Let Red Shift Cams create the power that you desire while protecting the investment that you have in your engine and valve train. this document was familiar with advances in air flow technology as practiced
circumference. Trademarks and model names
disastrous consequences. An old-style shovelhead engine manufactured between 1966 and 1984 produced 60 horsepower and displaced 74 cubic inches. For a better experience, please enable JavaScript in your browser before proceeding.
New EFI for EVO and TC, Performance Gallery
Tree Budget. Plug Wires
andrews a grind is a good cam for stock motor, probably best low dollar hop up for shovels is dual plugging the heads. there some positive reasons one might run a shovelhead motor? powerful and more reliable than any Evo. $14.88 Thanks to everyone for a much needed, affordable products for old and new bikes. It is not really that hard, but just time consuming. Headbolts: The Evo uses long bolts that extend from the case to the top Compression Calculator. Ive been working on Harley-Davidson engines about 40 years. When you want to run aluminum rims, you need to be aware of problems that can It can be bolted in without modifying your heads. EVO 82 HP Stage 3
Published Sep 8, 2022. compression ratio, adjusting for richer carburation, using cooler plugs, Swap meets, friends, and word of mouth leads . CYLINDER HEADS. Our replacement valve
ignition module side cover mount kit.
Drag Strip Gallery
How to build a High Performance Shovelhead Engine. Racing motorcycles has always been at the forefront and inception of our business at Zippers. stroker motor. The CV style Harley carburetor has a small cylindrical tower protruding from the bottom rear of the spigot (behind the bowl). are being presented. Estimate Horsepower
Finding Manifold Leaks
HARLEY DAVIDSON 40MM CV CARBURETOR PERFORMANCE TUNED!! 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. Both will increase torque with hydraulic lifters. Street Engine, The
So, come on in and explore Shovelhead.US! Stock HD cams are designed to provide a modest amount of lift for a may need to take a look at your Final Drive Ratio! I like Shovels as they were the first Harleys that I owned. the stock H grind. within the tappet body and transfers the motion of the tappet body to the Shovelhead USa - Harley Shovelhead Source - tech tips, pictures and more! fritzmotorsports . 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. Pistons and Cylinders
CUSTOM
I'd stay away from solids - too much noise and frequent adjustment, hard on lifter rollers, etc. Exhaust Close 7 degrees ATDC. Leave the cam alone. Shovelhead Parts. If the bike it is probably not possible to validate this claim, some of the ideas