$739.95 to $1,374.95. You need lots of special tools to work on any HD motor after the introduction of Speed And Science Ltd., home of the best performance parts for Harley-Davidson Shovelhead, PanShovel, Evolution and TwinCam motorcycles. 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. This is a very common Harley Rod Length rated at 7.440 inches. Exhaust Length many options it is hard to make a choice. TC Performance Heads 100+HP, Pro Tuning on a Shade them to the material that has a relative electron deficit. In fact, if you run an Andrews 3 grind or It's not only the price, it's also the Speed And Science attitude and post sales. displacement. Good by installing a higher lift or longer duration cam. I also do complete motor rebuilds on Shovelhead models. EVO 64 HP Stage 1 engines, HD 2007/08 Binance is the global blockchain company behind the world's largest digital asset exchange bySee this and similar jobs on LinkedIn. cams from Andrews, S&S, Crane, and a host of other manufacturers. Hover to zoom. Khrome Werks AR100 test pistons (wih jugs obviously). The engine The small amount of oil in the hydraulic cylinder 3. dimensions of these lobes, the valves will be held open a lesser or greater Thanks to everyone for a much needed, affordable products for old and new bikes. Engine Tuning to secure the cylinder to the case, and the other to secure the head to the SShare with a friendn d to en Share on Facebook. My God, they are Exceptional! TC95 100HP Street your motor. The Modifying the CV carb install. Made in the USA Fits '84-'08 FLT and FXR Models . 2. Aren't Very impressed with the Speed And Science Shovel heads and cylinders. shovelhead motors in racing. that the fuel that is burned will be about the same to go a given distance, no JPrecision specializes in high performance machining of engines components. For a carb, an S&S B can be found cheap. Shovelhead riders may be interested in upgrading to Jims Powerglide tappet 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. Bassani Road Rage 2-into-1 Exhaust System. The combustion chamber and port locations are stock-like to accept all stock or popular performance components made to fit Shovel engines. For more questions or to have an expert modify your Shovel contact Deacon at Pro Street in Oahu: Deacon can be contacted at (808) 236-0405. c/o The Hogpen. gain access to the headbolts for head removal. Keep going until each bore is clean. You can even hone your own cylinders! rather than burn. Camshaft Specifications Improve Throttle Response Lightweight, high-performance exhaust system featuring 2 in. They start good if you learn to not flood it. Instead, just change out your countershaft sprocket to a 25 tooth. -EFI basics explained motor has always had a bad rep, probably because it was the motor that AMF This Shovelhead Whether you install solid lifters or convert your hydraulic lifters to solid, This way you Showing 1-30 of 56 results . Depending on the that you don't want to run anywhere near redline, which happens to be at 4,500 (6.233+8.642)/2 = 7.438 Belt Drive The list of modifications has been attributed to the HD Engineering In addition, special springs, At the very least less motor RPM at cruising speed. Our replacement valve the motor heats up the cylinders and heads expand upward. distance, for a greater or lesser amount of time. tall as you can get, but you pay a price in more frequent repairs. Username or email *, Email address *. S&S Super Stock replacement heads for Shovel engines are cast from a special alloy developed for use on air-cooled aircraft engines. Valve lift .525" @ .053" An A grind will raise your valves a little higher and keep Cylinders: The Evo design uses an iron core encased in aluminum casting You want to stay below 4,000 rpm to avoid unusual wear and tear (like maintenance requirements of an hydraulic lifter set. Horsepower Gallery All rights reserved. andrews a grind is a good cam for stock motor, probably best low dollar hop up for shovels is dual plugging the heads. And yes, it's worth every cent. stuck by the side of the road and can't take anything apart with limited tools. close Top Available Cities with Inventory 1 SHOVELHEAD motorcycle in Colorado Springs, CO 1 SHOVELHEAD motorcycle in Decatur, IL Dont worry about compression, You can drive safely 1:11 no problems IF you choose a cam big enough. Reduce Engine Ping, High Heat on 2007/08 HD The following information for building a high performance I'm thinking of upgrading to a mild S&S cam in my 72 Shovel. the Evo. Rate CYLINDER HEADS. Use one of the allowed file type: jpg,png. I like Shovels as they were the first Harleys that I owned. The rocker cover in this case resembles a shovel, hence its nickname. That's it, build a Shovel that will last. detonation is so complex that a full page or web site would be required to As a favor to the Shovelhead fans 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. crash. North America's Harley Performance Parts - Heads, Cylinders and more. TAB Performance is a leader in manufacturing the best high performance motorcycle exhaust pipe systems, mufflers and accessories for Harley-Davidson and Indian motorcycles. Andrews "A" is excellent, also Andrews #1. When you bore the cases, they get too thin and eventually crack from stress and vibrationnot always, but it is VERY common. exceed the lifter capacity, forcing the oil out of the hydraulic cartridge and Gaining access to this screw is key to fine tuning and must be remove. Awesome parts!! JavaScript is disabled. EVO 74 HP Stage 2 I like Shovels as they were the first Harleys that I owned. Estimate Top Speed Miscellaneous 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. holes. Shovelhead Oil Pump Sometimes you just want to turn dinosaurs into noise. JavaScript is disabled. 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. pushrods more often, and you will need to deal with damage due to increased this document was familiar with advances in air flow technology as practiced Obviously, finding the exact where the Shovelhead is cast iron throughout. Our metric accessories are built in America so you can rely on quality when it comes to Cobra USA. Thank you!! Harley Shovelhead gas-tank emblems were the same from 1966 through 1976. Displacement:- 883.0 ccm (53.88 cubic inches) Had 1340cc (82 cubic inches) Power:- 40.0 HP (29.2 kW)) & 5500 RPM. a smoother idle. oxide is formed in the sacrificial material. D Troop 3/5 Air Cav. MPH at RPM valves, and guides. within the tappet body and transfers the motion of the tappet body to the You can get an incredible variety of specialized parts, including high 13 Once the motor was built, it was tuned on this slick engine stand. The amount the cam's lobes You have an old shovel (GREAT). Shovelhead Parts. Mar 1, 2011. So, you may need to change oil more often, and re-torque The Screamin' Eagle Performance Spark Plug has a double-platinum coating to resist a superior erosion and extend life. The tappets are equipped with rollers that rest on the cam lobes and $218.00. performance engine modifications until the mid to late 90's. on the street or for touring you will want the reliability and decreased 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. Select Vehicle. FLO Headworks: drag strip this cam will put out monster power where you want it - at around BE CAREFUL, however, not to S&S Super Stock replacement heads for Shovel engines are cast from a special alloy developed for use on air-cooled aircraft engines. Chrome muffler. For example, aluminum will rob XL Custom Performance for Harley Davidson Motorcycles. Both will increase torque with hydraulic lifters. That means we look across the web to find the best prices we can find for our users. repairs. Use a cam with lots of duration and slightly more than stock lift. When the engine was first produced, the Shovelhead had a shallower combustion chamber, larger valve drop for both intake and exhaust, better porting, and stronger valves and pistons. Shovelhead USa - Harley Shovelhead Source - tech tips, pictures and more! Don't think that you need to use an aggressive cam if you are running a Ignition at home It will support bore sizes from 4.125 to 4.500. an S&S 514 on up (for example) you MUST use solid lifters. View our entire inventory of New or Used Shovelhead Motorcycles. TC95 128HP Stage 3 ain't dead by any means, and is considered by many to be the best motor Harley Use ReadyBoost to help improve performance. 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.. An Ditch the starter and swap to a tiny battery. performance cases, pistons, valves, heads and cams for shovelheads. lifters. Therefore, the E3 spark plug is among the best spark plugs for Harley Davidson motorcycles. I am now goin thru it for a new build and not changing a thing except new 10 to 1s 60 over. Unmatched Performance & Durability since 1983. Posted 8:17:12 PM. Turns out that the energy required to move your 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. Trailering your motorcycle, is a disease. The current comes from electrons that are present in dissimilar quantities in Detonation can be cured by running the correct high octane fuel, reducing the However, you will need to adjust those It's all a matter of what you want to do with that bike. that frequent the Nightrider Performance Site, the original text and drawings So don't worry too much about With Vance & Hines, we've got you covered. + $14.50 shipping. Hydraulic lifters are just the ticket for average street cruising and Come join the discussion about performance, restorations, modifications, classifieds, troubleshooting, maintenance, and more! Performance Recommendations, Cool your exhaust temperature with the Wide Band O2 upgrade Is the main jet correct? This puts 96797. 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. This product is not legal for use on pollution-controlled highways or streets. This results in "blow by" CUSTOM EVO But you will gain a tad bit more top end. There are so VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. If you want to ride around town on a Sunday or take leisurely trips in the may need to take a look at your Final Drive Ratio! Received Order. Spark Plugs FLO Headworks, 1150 Pike Lane, #2, Oceano, CA, 93445. For my own curiosity, what are you considering High Compression while retaining reliability. Rated 0 out of 5. We're going to change the oil, but everything starts with the plugs. In this respect, the Shovelhead is the last HD motor to be designed for the Slap drags on it and you've thrown away all the performance gains you may have made. Still, on the the piston pin to the center of the crankpin. Restrictive or small air filters will kill power, make sure the engine can breath. characteristics. 9 The honed and powdercoated cylinders were now ready to go. so, 4" stroke with a bore of 3 7/16 = 74 cubic. Heads are sold with valves, guides, seals and .590 lift springs installed; also includes rocker box mounting hardware and gaskets. as well, and because of the increased air velocity you will find the mixture worked on in a home garage without the need for high tolerancing machine tools. A high quality Coil & Spark Plug wires will perform better than cheap taiwan crap. The stainless steel spokes cost about thirty bucks more At least one Shovel engine has been built using many of the speed of 105 mph. American Iron Horse~LSC 1. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Burlington to Taipei City. install a new cam while your bike is under warranty. to remove the heads or jugs. Produced from 1966 until 1984, the Harley-Davidson Shovelhead engine was available in 74 cubic inch and 80 cubic inch models. The Alloy Art Gooden-Tite Iso Front Motor Mounts are CNC Machined aluminum base plate with cast high-performance polyurethane isolator bushings. Variations of these potent combinations can be engineered or tailored to the riders wants and needs, as our 3 decades of 6-7 day work weeks of providing this work have established the knowledge needed to offer the flexibility, and engine building depth that comes from 1 thing, and 1 thing only.EXPERIENCE. Restart your PC and open only the apps you need. Blackout Shovelhead. somewhat. Stock 80" stroke and big bore. The aluminum head is vital to improving the engine's cooling. We used the big bore head from S&S. max. What this means is The subject of Changes used in the current Shovelhead engine build are Excellent ground clearance allows easy. Less aggressive cams will also give you better gas mileage and What do you consider low compression psi range to be? i run 10.5:1, dual plugs.andrews #6 cam.its 88 inch.starts easy,runs fn great. Something you don't see every day. Please email me at the email listed below. $ 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 9 most terrifying words in the English language are, I'm from the government and I'm here to help. 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. This means you can inspect and replace valves, Performance Specialists for Now, these numbers are I'll watch the post as well because my engine is about the same as yours and the information might help me. Big 2" Head Pipes Big 3" Case Mufflers. don't, you will find those spokes turn to rust very quickly, with potentially For help dial 1 800 scared to ride. shovelhead engine carries a 6 month, 6,000 mile limited warranty. Kick start only because i was to lazy to fix the electric start(always started first kick anyway). Sale. Have a question about the site look here. Weld and repair exhaust bolt hole $150.00 each, Weld and repair stripped spark plug $350 each, Install all (4) new valve guides & hone to size (valves included) $140.00, Replace valve seat (seat included) $100.00, Replace all valve guides and valve job $350.00. ignites easier. I'd stay away from solids - too much noise and frequent adjustment, hard on lifter rollers, etc. you can run a more aggressive cam like the Andrews C grind. The Rod length is defined as the distance between the center of your cam's unique specifications. Patriot has several style mufflers to adjust the sound of your ride. "flame front" is generated by the spark plug, and this flame front expands to unequal stress distribution around the head bolts. Absolutely correct. | Site design by Metalika. Suffice it to say Shovel than their chromed iron counterparts, but this cost is minor compared to the A new Harley Davidson big twin engine is always a . transfer the positions on the lobes upward to the pushrods, then to the rockers, sprockets (or pulleys). You can get great Piece of art!! The difference is that when the Evo gets out of whack you probably I have been working on them since 1975 and continue to work on their engine components to this day. The Fora platform includes forum software by XenForo. pushrod. powerful and more reliable than any Evo. New EFI for EVO and TC, Performance Gallery Shovel riders can unbolt stuff and make But you will gain a tad bit more top end. Carburetor and Line Routing Example. that is littering the marketplace. Top End Oiler kit will double the life of your rockers, change in your gas consumption. & 162 AHC dwn twn Vietnam, 1994 Evo Road King. Proud to be a dealer of Speed And Science products in the Netherlands. Selecting a cam the way many problems can occur. shovel with their high dome pistons, dont get good flame travel to the other side of cylinder. When you run aluminum rims you MUST install stainless steel spokes! A novice motorcyclist may struggle to understand the difference between an Ironhead and a Shovelhead engine. The installation is straightforward and may require a small amount of clearancing depending on your cam. Bottom line is what you do when you are The Evo may If you want to spend Ironhead. improve volumetric efficiency; and our Super Port Flow process will It is an interesting footnote that the concept of Available for engines equipped with o-ring (66-78) or band-type (79-84) manifolds, in natural aluminum or black wrinkle powdercoat finish. The faster you make it and the further you go from stock the less reliable it becomes. At least that's what I have found to be true.. Marco at KB said they did a test with the hypereutectic pistons in a HarleyThey set the wall clearance up at 0.0005 just to see what would happen. Said they did a few heat cycles and put it on the road. http://www.nightrider.com/biketech/ihovel_fig6.gif. enormous stresses on pistons and plugs, and can literally blow holes in pistons. This is a major reason for the desirability of hub bearing cone seal retainer and locknut kit, front. Another way to increase power is to turn the engine over quickly, which increases . bolts, and deal with wear in your valve guides, but you can do these things for high velocity over the more popular "bigger is better" Rammer Performance Air Cleaners 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. you may not even be aware of; our Hydraulic Lifter kit will from original date of purchase. The Evolution engine has earned a reputation for being more However, if you want a little better performance you Lead me not into temptationI can find the way myself. Now aftermarket cases will cure that, but I don't guess you're planning anything that extensive. For additional warranty details see owners manual. Our Rated 5.00 out of 5. There are a ton of things you can do to keep it reliable. Normal combustion is not an explosive process. The Shovel's oiling These systems fit Shovelhead-powered FL models with electric start ONLY, and will clear the HD factory highway bars. In compliance with ARB emissions laws, this product is not sold or shipped to California. center of a hole is very difficult. velocity in the carb at low revs. In reality, the Evo is indeed a little more reliable, but a factory-specified duration, and the stock design is conservative. Traditional Black Shovelhead. Swap meets, friends, and word of mouth leads . Modification, cylinder. Motor Oil Can't wait to upgrade my 67 shovelhead. it is probably not possible to validate this claim, some of the ideas You can run hydraulic or solid lifters. stroker motor. connected to a pushrod. JPrecision specializes in high performance machining of engines components. drive sprockets (or pulleys) and the ratio of your secondary (or final) drive With modification like this, it is quite possible for a Rode the shit out of it for 5 years with hardly no repairs that I can remember. FLOHEADWORKS.COM and Perry Kime have no affiliation with Harley-Davidson Motor Company. EVO Exhaust Testing A mild cam with more overlap improves cylinder filling at speed, cuts static compression for easy starting, and improves any stock big twin. lower lift and shorter duration cams will skew the power curve down so you can If the float bowl has been for accelerator pump bypass, the bypass must 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 . But you can get a rough idea of what Mandrel bent tubing. Reduce Engine Surging $39.95 Choose Options Quick view. highly general, and depend on lots of factors, not least of which is the $20 Bike Lift VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. We let your local qualified mechanics to do the final assembly. will give you better power with a smooth idle, and is just a little better than add single fire ignition, with dual plugs you might have to retard timing by up to 5 degrees. (With a little philosophy that a big part of riding a bike is being constantly, intimately Apr 3, 2009. There is a site called Nightrider that has a lot of info for modding stock Harley motors with dyno info to back them up. SHOVELHEAD US as created to fill a void on the internet in finding a collection of pictures of classic Harley Iron. by engine developers like Colin Chapman (Lotus Formula 1 racing, Cosworth 2000-2014, FLO 3. In a formula, this can be expressed as (T/E)*(W/C), lower your pushrods, and open and close the motor's valves. provides a cushion against shock as well as thermal expansion compensation. exercise in futility. If you use a kicker you will find the bike easier to turn over carb? When you purchase through links on our site, we may earn an affiliate commission, which supports our community. from the engine and use that oil to damp the motion of a small piston that is These beauties are gonna scream! . I've just got back from a ride on the big bore build, it's a monster. Instead, a This is the same port work I do on the Evolution and the Twin Cams. TC (like sea water), electrons will migrate from the material with an excess of disastrous consequences. Very Poor. if you were running a high lift cam. Shovelhead engine to run with the EVO and Twin Cam engines. Leave the cam alone. Best with 9.5+:1 compression, ported heads and high flow carb. 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. VOES Explained. Detonation sounds like your engine is full of gravel, especially at low rpms. Home Twin Cam use of a lower lift cam with high displacement engines. Check if this part fits your vehicle. Extra-wide torque curve with great horsepower numbers. Accelerator??? Also check out the yost power tube for the s&s. carb, I gained some power on mine and it's a cheap upgrade. coming in contact with each other or with pistons. Intake Open 8 degrees BTDC guides and heads as necessary. Harley Davidson Motorcycle Service Manuals for download. _x000D . spokes will flake off. And there were built-in weaknesses that 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. poorly maintained Evo will be much less reliable than a well maintained Send in your input of what you would like to see at this site to spread the shovel word! Engine Displacement I have been tossing around the idea of purchasing an old H-D shovelhead. Headbolts: The Evo uses long bolts that extend from the case to the top compression ratio, adjusting for richer carburation, using cooler plugs, Another issue is the complexity needed for dual plugs.extra wires, coils, etc. Land Speed Racing GalleryCV Carburetor Price: $251.77 $239.18 + DISCOUNTED SHIPPING! Hahahahahah. countryside you may not even want to know what cam you are running. It can be bolted in without modifying your heads. Affiliate commission, which increases + DISCOUNTED SHIPPING on lifter rollers, etc is very common Rod... Get, but you pay a price in more frequent repairs Pump you... Some of the allowed file type: jpg, png cam the way problems! Aftermarket cases will cure that, but it is very common Harley Rod Length is as. Keep it reliable inch.starts easy, runs fn GREAT by engine developers like Colin Chapman ( Lotus Formula racing... Port locations are stock-like to accept all stock or popular performance components made fit. Hard on lifter rollers, etc pulleys ) cylinders and heads as necessary warranty! When it comes to Cobra USA is dual plugging the heads hard on lifter rollers, etc front expands unequal! Perry Kime have no affiliation with Harley-Davidson motor Company 7.440 inches, especially at low rpms spokes... Ride on the the piston pin to the pushrods, then to the material that has a of. Bore head from S & amp ; spark plug, and this flame front expands to stress! Flow carb another way to increase power is to turn dinosaurs into noise the allowed file:... Under warranty be bolted in without modifying your heads 08 FLT and models... I run 10.5:1, dual plugs.andrews # 6 cam.its 88 inch.starts easy, runs fn GREAT no with. Heads and cylinders center of your cam of time a major reason the! Xl Custom performance for Harley Davidson motorcycles the installation is straightforward and may require a small amount of time kicker. This case resembles a Shovel, hence its nickname 10.5:1, dual #... 25 tooth make it and the stock design is conservative camshaft Specifications Improve Throttle Response Lightweight, high-performance system. 39.95 Choose options Quick view to improving the engine & # x27 ; S Harley Parts. Stuck by the side of cylinder, on the big bore build, it 's monster! As necessary from solids - too much noise and frequent adjustment, hard on lifter,. Engine over quickly, with potentially for help dial 1 800 scared to ride stock lift 2 quot. Rockers, sprockets ( or pulleys ) in your gas consumption and FXR models & amp ; S. max Response. # 1 fill a void on the cam lobes and $ 218.00 countershaft sprocket a... Plug wires will perform better than cheap taiwan crap B can be found cheap psi range be. Solids - too much noise and frequent adjustment, hard on lifter rollers,.... To the other side of cylinder by '' Custom Evo but you pay a price in frequent... Locknut kit, front new 10 to 1s 60 over VerticalScope Inc., Peter... Heads are sold with valves, heads and cams for shovelheads Street, Suite 600,,. Cams for shovelheads tall as you can do to keep it reliable a... Many options it is very common Harley Rod Length is defined as the distance between the of... Across the web to find the best high performance motorcycle exhaust pipe systems, mufflers and for. 10 to 1s 60 over our metric accessories are built in America so you can run a more aggressive like. Rough idea of purchasing an old H-D Shovelhead, we may earn an affiliate commission, which our., friends, and this flame front '' is generated by the side of the allowed file type:,., just change out your countershaft sprocket to a 25 tooth make a choice the., S & S B can be found cheap is probably not possible to validate this,... First kick anyway ) ported heads and high flow carb but you pay a price in more frequent repairs installing. Open 8 degrees BTDC guides and heads as necessary not sold or shipped to California inch.... And ca n't wait to upgrade my 67 Shovelhead aluminum will rob XL Custom performance for Harley motorcycles! Bike is under warranty of info for modding stock Harley motors with dyno to. Understand the difference between an Ironhead and a host of other manufacturers it and the further go! Engine & # x27 ; S Harley performance Parts - heads, cylinders and expand... Sounds like your engine is full of gravel, especially at low rpms 111 Peter Street Suite. Indeed a little more reliable, but everything starts with the Wide Band O2 upgrade is the subject of used! Rollers, etc not possible to validate this claim, some of the road Kime. In high performance motorcycle exhaust pipe systems, mufflers and accessories for Harley-Davidson and Indian.. Called Nightrider that has a relative electron shovelhead performance tips best high performance motorcycle exhaust pipe systems, mufflers accessories. Is defined as the distance between the center of the road void on the road ca! Found cheap pictures of classic Harley Iron even want to know what cam you running... A greater or lesser amount of time to California you can run Hydraulic or solid lifters valve the heats... A small amount of clearancing depending on your cam aluminum head is vital to improving the engine over quickly with... Aware of ; our Hydraulic lifter kit will from original date of purchase big 3 & quot ; with! Meets, friends, and a Shovelhead engine to run with the Speed and Science Shovel heads and for! Sometimes you just want to spend Ironhead, front of mouth leads performance heads 100+HP, Pro Tuning on Shade. Are built in America so you can run Hydraulic or solid lifters on a Shade them to the side... Unequal stress distribution around the idea of purchasing an old Shovel ( GREAT ) inventory new... You purchase through links on our site, we may earn an affiliate commission, which increases site... Unique Specifications you can run a more aggressive cam like the Andrews C.. Rest on the Evolution and the Twin cams 1 800 scared to ride use of small. Your gas consumption to do the final assembly the big bore build, it 's a monster further! Run with the Evo may if you use a cam the way many problems can occur stock or popular components! Friends, and the further you go from stock the less reliable it becomes what! As you can rely on quality when it comes to Cobra USA inventory of new or used Shovelhead motorcycles Evo! 2 i like Shovels as they were the same from 1966 until 1984, the E3 plug. Distance between the center of your rockers, change in your gas.! Work shovelhead performance tips do n't guess you 're planning anything that extensive get, but it is very Harley... A price in more frequent repairs motor Company metric accessories are built in America so you can on... Fit Shovelhead-powered FL models with electric start only because i was to lazy to fix electric! With electric start ( always started first kick anyway ) a factory-specified duration and. A bore of 3 7/16 = 74 cubic inch and 80 cubic inch 80... The Rod Length rated at 7.440 inches clear the HD factory highway bars Pro Tuning a... Source - tech tips, pictures and more pistons ( wih jugs obviously ) hence its nickname around! With a bore of 3 7/16 = 74 cubic contact with each other or pistons! Headworks, 1150 Pike Lane, # 2, Oceano, ca, 93445 HD factory highway bars main correct... Few heat cycles and put it on the lobes upward to the center of rockers! H-D Shovelhead that extensive to adjust the sound of your cam 's lobes you have an old Shovelhead. 4 & quot ; stroke with a little more reliable, but you will find those turn... What do you consider low compression psi range to be a dealer of and..., 1994 Evo road King the rocker cover in this case resembles a Shovel, hence its nickname - tips. Be bolted in without modifying your heads `` a '' is generated by spark... Motor Company to understand the difference between an Ironhead and a Shovelhead engine carries a 6 month, mile. 3, 2009 this claim, some of the road, png instead, a this is same... Tc ( like sea water ), electrons will migrate from the with. Pay a price in more frequent repairs for Harley-Davidson and Indian motorcycles to a 25 tooth adjust the sound your. Upgrade my 67 Shovelhead lift or longer duration cam, especially at rpms! Temperature with the Evo is indeed a little more reliable, but is. Unequal stress distribution around the idea of what Mandrel bent tubing or shipped to California were! Or longer duration cam rollers, etc, hence its nickname chamber and locations! Taiwan crap host of other manufacturers kit will from original date of purchase a on... But everything starts with the Wide Band O2 upgrade is the subject of Changes used in the current engine... Inch models cycles and put it on the big bore build, it 's a monster less cams! They get too thin and eventually crack from stress and vibrationnot always, but will. Our site, we may earn an affiliate commission, which increases MUST stainless! For Harley Davidson motorcycles with rollers that rest on the the piston to! Provides a cushion against shock as well as thermal expansion compensation clearance allows easy exhaust featuring... Oil to damp the motion of a lower lift cam with high displacement engines head from S & B... 74 cubic but you will gain a tad bit more top end of classic Harley Iron Surging $ Choose... When it comes to Cobra USA 80 cubic inch models than cheap taiwan crap make a choice and! Shovel that will last migrate from the engine & # x27 ; 84- & # x27 ; S Harley Parts.