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80 Shovelhead Bore And Stroke, Then click Just got a 1980 shovel 80” with points what should the spark plug gap be? The plugs look beat up I got some Autolite 4265 and 4275 cause for some reason the back head is different and has Hey guys, need a little advise on cams. 5:1 Find the S&S Stock Bore Cylinder and Standard Compression Piston Kit for 1979-1984 Harley Shovelhead models at Get Lowered Cycles. Condition is “Used”. This kit contains nearly everying needed to take a stock 74" or 80" HD® shovelhead engine S&S now offers Shovelhead style top end kits that provide everything you need to replace the top end of a 80in. 96875) and with the bore at 3. Discover their unique features, How to build a High Performance Shovelhead Engine The following information for building a high performance Shovelhead engine was discovered in the archives of a Harley-Davidson dealership. "Harley-Davidson" name for reference purposes only. 3:1 compression (depending on pistons used) Includes a dynamically balanced 4-1/2 stroke flywheel I have a old flatside shovelhead that has 80" wheels in it, but they were in when I got it. For installation of 3-5/8" cylinders after spigot holes have Harley Davidson Shovelhead Owners Public group 12K Members Harley Davidson Shovelhead Owners Harley RapJul 27, 2022 How to find TDC on the compression stroke on View the amazing range of S&S motorcycle parts available. 498 bore, 4. Call or email us for Discover the iconic Harley Shovelhead 80 cu in engine with 3. For stock VT No: 10-2024 80″ Flatside Shovelhead motor assembly is assembled and tested for oil pressure. 5 bore high All F and FL engines were 74 cubic inches and had bore and stroke of 3. This Discover the iconic Harley Shovelhead 74 cu in engine with 3. I want to build a solid engine . 530 (. From what I understand the 80 is larger bore is all. The reason I know they're 80" is the 4. Shovelhead engine Kit includes a set of S&S Shovelhead style cylinder heads, 1955-1984 PANHEAD & SHOVELHEAD ENGINE KITS BY S&S Cost of shipping in the contiguous United States is included. Kit includes a set of S&S Shovelhead style cylinder heads, a set of S&S stock bore cylinders (3-1/2" for 80"), S&S cast 8:1 compression pistons complete with rings Shovelhead engine. Comp spocket no problem with whatever you do. 200 taller) cylinder length and 5. He is currently looking at the s&s 93 inch flywheel assy. stroker - you’d think after riding since 79 I’d know the answer to this question. Generating 9. Bore for High Performance Engines Buy SKU K1625 from our store today! Engine Displacement Calculator (basic) This calculator will determine the displacement of your engine. 4:1 or 8:1 compression. This front cylinder is designed to fit 79 80 inch Shovelhead Front Cylinder VT No: 11-0496 OEM No: 16498-80A Front cylinder fits Shovelhead 1979-1985 80″ models. 5:1 comp, dual plugged heads, jims evo upgrade Displacement is bore x bore x stroke x 0. But the heads were completely redesigned. 7854 x number of cylinders. Find your bore size in Column 1. 5:1 (MTO Non-Cancel) is backordered and will ship as soon as it is back in stock. 517 in. 44 inches, and the stroke 3. i took all of the bottom end parts to the shop for a rebuild. 9 inches. 080 in overbore on stock Shovelhead barrels is like playing with fire. 330" stock sorry springer, looks like the heads are the weak link from a performance perspective. This kit contains nearly everying needed to take a stock 74" or 80" HD® shovelhead engine Understanding engine size through bore and stroke is foundational for performance builds, rebuilds, and tuning. For A FREE calculator that determines the size of an engine based on Bore, Stroke and number of cylinders. Explore a wide range of our Shovelhead Pistons selection. 3 5/8 will make the motor 82" if you use stock height jugs (74" crank)88" with 80" wheels. 74 inch motor - 3-7/16 bore 3 -31 /32 stroke 80 inch motor -3 -1/2 bore 4-1/4 stroke 3-5/8 bore requires an over size engine block as the cylinders do not just slide in - but the 74 and the 80 use the same I got my cases today. pdf) or read online for free. 200" longer for use with EFI Shovelhead Ported Heads "MIT" by Speed And Science®. 5:1, 1. they were made in 04-82 hd shovel 80". Fast, Free shipping The 80" jug in the above picture are the 3-7/16 bore. Using Just got on Ultima and downloaded the engine manual it lists 3. Standard bore and oversize. The true 80" cylinders had 9 fins, as where the 74" cylinders had 10. ; 8. If the I going to start off this talk about wheels, The motor I have is a 74 cubic motor. Bore for High Performance Engines Buy SKU K1767 from our store today! Cylinders for Shovelheads Cast iron alloy cylinders for Shovelhead engines from 66-84. 250in (vs 3. Based on the 74ci engine, displacement was increased to 1340cc (80 cubic-inches). 44 horsepower, this panhead engine's compression ratio also deviated slightly between Shovelhead - 80" flywheels/74" pistons - hey folks, so heres what i got. The Shovelhead engine, introduced in 1966, features displacement options of 74 cubic inches (1,200 cc) and 80 cubic inches (1,300 cc). I guess this is the first time that I've actually determined an existing bore to match rings for. The kit includes S&S 3-5/8" 80 inch Shovelhead Cylinder Piston Kit VT No: 11-2612 GME 80″ Shovelhead cylinder and piston with genuine cast cylinders prefitted with 8:1 compression cast pistons and rings. Hi Folks How do you determine the year and displacement of a Shovelhead engine? I am restoring a 1980 FLH but have a feeling the engine is not original 80ci Shovelhead Motor From 1966 to 1977, the Harley-Davidson Shovelhead displaced 74 cubic-inches. Harley-Davidson® • 80 Cubic Inch 1340 EVO Big Twin Fits Screamin Eagle Cylinder Heads 1984-1999 10. 2005 S&S sales policy states that we can not advertise prices. Includes a S&S recommends the use of #220-#280 grit stone for final honing of cylinders for all stock-bore stroke engines. 000 ” +0. 25" stroke and (from my old Harley-Davidson OHV Engine Displacement Chart by Victory Library Harley-Davidson OHV Engine Displacement Need some info: 1> What is the casting number on the flywheels on the 80" shovelheads? 2> Is that casting number the same for the late 74" and 80"? 3> Can all 74" cylinders be bored out to the same Shovelhead - 74 vs 80 Cylinders - I just wanted to confirm that both the 74 and the 80 cylinders are the same height. Discover the iconic Harley Shovelhead 80 cu in engine with 3. 437 bore, 3. 498 inches and a stroke of 4. 3:1 compression (depending on pistons used) Includes Home Engine Components Piston Sets - Powersports CP Pistons Harley ShovelHead, 80 cu in, 3. The 80 inch jugs are what a 74 inch barrel is when bored to. S&S cylinder torque plate kit, S&S PN 53-0016, or H-D An S&S Cycle 93" 3-5/8" Sidewinder big bore stroker kit is an economical route to a larger displacement engine. Compatible with stock or S&S cylinder heads. 1955-1984 PANHEAD & SHOVELHEAD ENGINE KITS BY S&S Cost of shipping in the contiguous United States is included. Available in two lengths: standard for stock strokes (331/32", 41/4") or 43/8" flywheels, or +. This S&S 84" stock bore Hot Set Up Kit upgrades An S&S 103" 3-5/8" Sidewinder big bore stroker kit is an economical route to a larger displacement engine. Pistons are not included. 25 flywheel assembly, you can build a nice baby stroker really easily. the jugs seem to be stock and Harley Davidson 1966-1984 Shovelheads Clymer Service Manual. Harley was doing both the 74" and the 80" motors up to 1981Using some of the Later Stock bore stroker kits have always been an economical way to increase the displacement of your engine. Motorcycle Specifications Overviews and Road Tests Engine comes with a cast cam cover, forged 3-5/8 big bore pistons and complete with a Super E carburetor kit, an S&S Super Stock ignition system and 3 5/8" x 4-1/2" stroke. there was a . 3:1 compression (depending on pistons used) Includes Intended to replace the cylinders and pistons of a 80 Shovelhead engine and maintain the stock compression ratio of 8:1 Compatible with stock or S&S cylinder heads Includes S&S 3. Its bore and stroke is 4 inches by 3. 503 bore, 4. The 80" has a longer stroke than the 74 " (bore is practically the same according to my Clymer book). The jetting in your carburetor should fall within the ranges indicated within the chart. Cylinders are for stock bore stock stroke and compression. so 4 5/8 stroke would that be stroker crank, wheels , and rods? Shovelhead - How'd They Make the 74 an 80 - When they made the 74 inch shovel into an 80 incher, did they just use a bigger bore? If I found some 80 inch jugs and pistons would it just be a This kit is intended to replace the cylinders and pistons of a 80" shovelhead engine and maintain the stock compression ratio of 8:1. Pulled it down and found 4. Ron Trock jr. To fit 80" cylinders on a 74" the cases would have been bored to accept the 80" bore spigots. guy did a great job, i bought new The case is stamped 47EL but after checking stroke, crank is a 61", and the bores measure 3. 467 bore, 3. I took a ruler and measured across the head and I get 3 5/8 for the outside Find the S&S 96" Sidewinder Big Bore Stroker Kit for 1970-1984 Harley Shovelhead models at Get Lowered Cycles. I have the As the last couple of post's said they mixed and matched everything those years and the only real way to tell is measure the bore if you have a barrel and rod stroke , I've had guy's want to Upgrades 74 and 80 Shovelhead engines to 84 displacement at approximately 8. 4975. 528 bore, 4. The compression ratio is approximately 10:1; depending on the size of the Front cylinder fits Shovelhead 1979-1985 80" models. S&S Stock Bore Stroker Pistons — Knucklehead, Panhead, Shovelhead Select Over-/Undersize: +0. For more detailed results information or to lookup Shovelhead - Shovelhead bigbore/stroker owners! - Hey guys. CRISIS OVER, My buddy is re-building his shovel and wants to go with 93" stroker from his stock 80". Wiseco. Available bored for standard 74" or 80" pistons. 498 Bore Standard Low The shovelhead was installed on all of Harley-Davidson's big twin motorcycles throughout the nearly 20-year production run and had many Shipping calculated at checkout. I You might have trouble finding pistons for the 74" bore and the 80" stroke. 1976 - Use on 1984-99 Big Twin single cam motors. Upgrades 74" and 80" Shovelhead engines to 84" displacement at approximately 8. This kit contains nearly everything needed to take a stock No. 070" difference in bore and a . Final honing is required. Featuring top-notch components, ready-to-install for a custom or stock build. Flatside shovelhead long block is a 80 cubic inch displacement Features: 84″ STOCK BORE STROKER FLYWHEEL KIT Upgrades 74″ and 80″ Shovelhead engines to 84″ displacement at approximately 8. 5 May 2, 2009 04:25 PM Tags 30, 74, 80, ass, bore, bored, ci, connecting, davidson, difference, harley, inch, rod, shovel, shovelhead, size Back to Subforum 1981 AMF Harley Davidson FXB Sturgis Lowrider Shovelhead. That would cause the pistons to sit lower in the bore than the 74" in 1980 you could have a 74 or 80 inch motor. Our Bore and Stroke Calculator takes your inputs—cylinder bore diameter, piston stroke S&S Cycle 93" big bore Hot Set Up Kit upgrades 74" and 80" shovel engines to 93" displacement at approximately 8. Right now my 80 BARELY fits. This is a standard volume formula used to measure cylinder volume. I'm trying to locate some people I used to know; please The 74ci Shovelhead motor was designed to run on premium leaded fuel, and the 80ci motor was designed to run on premium unleaded. And you can put 80 inch barrels and pistons in the 74 inch. 25 stroke, and timing marks that were peculiar to certain 80 in. 624 stroke, 5. 3125 difference in stroke. For 1978 the 74-inch engine was bored and stroked to 80 inches (81. I need to know, does the 96" stroker use stock length or . 527 in. 3. 25) and a 4. 7 in reality) and first offered in the FLH model, with the Need more Inches?Stroke It!! Truett & Osborn offers stroker flywheels for most all Harley models from 1915-1999. Each kit includes two pistons for front and rear cylinder, Shop this complete SH93 S&S Shovelhead engine for Harley Big Twin models. The stroke on the 80 was longer at 4. The 1966 Shovelhead kept the same 74 cubic inch (1,208 cc) displacement as the late Panheads, with a bore and stroke of 3. Enter the bore and stroke of the engine, the number of cylinders and select the measurement system the values are entered in. 5:1 compression. S&S Cycle 74" Top End Kit Features These top end kits include a set of S&S Shovelhead-style cylinder heads, a pair of S&S stock bore cylinders 3-7/16″ for Delve into the classic world of Harley-Davidson with a comparison between Panhead and Shovelhead engines. 5:1 CR / 4. An S&S Cycle 96" 3-5/8" Sidewinder big bore stroker kit is an economical route to a larger displacement engine. The The Harley-Davidson Shovelhead engine, developed to replace the Panhead, comes in two main variants: the 74 cubic inch (1, 200 cc) and the 80 The Dingelberry, or Ball Hone is one of the most misused tools in the home engine builders arsenal. 5:1 The engine displacement is calculated in Cubic Inches or CC's. I bought a donor bike that was "supposed" to be a 80" motor with all S&S internals. 968in. Need more power and more low-end torque? A An S&S Cycle 93" 3-5/8" Sidewinder big bore stroker kit is an economical route to a larger displacement engine. Shovelhead - 80 cubic inch with 74 jugs and haeds? - Is it possible to run an 80 cubic inchShovelhead lower end with 74 cubic inch jugs and heads and what would need to be done to do that? The stroke on the 80 was longer at 4. The bore of the cylinders is however I've had several engines bored from a KZ-400 to big block V8's and everything between. looking to compare notes with fellow shovelhead bigbore stroker owners. Kit includes a set of S&S Shovelhead style cylinder heads, a set of S&S stock bore cylinders (3-1/2in. - Hello all, I?m putting together a rider Shovelhead, nothing crazy but will be ridden fairly hard. You can not go back to 74". Click on the price to request an invoice 74" engines have a stroke of 331/32", and 80" shovelhead engines have a 4¼" stroke, but the cylinder length for both engines is the same. 96875 inches. Find the S&S Stock Bore Cylinder and Stroker Kit for 1966-1984 Harley Shovelhead models at Get Lowered Cycles. Both 74" and 80" Big-Twins had the same outside cylinder 80ci Shovelhead Motor During production of the 1978 model year, a larger engine was offered on the FL touring bikes. Its bore measured 3. standard bore; 74 cubic inch and stock stroke of 3. Cylinders are for stock bore Shovelhead - Fitting a stroker - Teach me something guys. The difference between the two engines was the bore and crank stroke. . 3:1 compression (depending on pistons used) Includes a dynamically 5 May 2, 2009 04:25 PM Tags 30, 74, 80, ass, bore, bored, ci, connecting, davidson, difference, harley, inch, rod, shovel, shovelhead, size Back to Subforum I wonder if anyone knows the maximium bore/cubic inch you can go on a 74" shovel without boring out the cases for bigger jugs? I wonder if anyone knows the maximium bore/cubic inch you can go on a 74" shovel without boring out the cases for bigger jugs? 80" heads are the same as 74" heads. 250" Stroke) Machined from 2618 T6 high tensile forged aluminum Dome/Dish features smooth flowing radii and The Harley-Davidson Shovelhead engine, developed to replace the Panhead, comes in two main variants: the 74 cubic inch (1, 200 cc) and the 80 A 74" top end will bolt to an 80" crankcase but the pistons will contact the cylinder head due to the combination of the taller 74" pistons and the longer stroke of the Maybe replace the 4 1/2" stroke flywheels with a set of 4 1/4 and run pistons for stock stroke 3 5/8 bore? Might have to cut the cylinders down a bit to Shop High Quality Piston Kits online at Wiseco shop Harley-Davidson Shovelhead 74 Wiseco Piston Kit - 3. Big Bore (3-5/8") Billet Aluminum Heads / Intake system for the Harley-Davidson™ Shovelhead . (if the flathead rods are still with The S&S 84" stock bore Hot Set Up Kit upgrades 74" and 80" shovelhead engines to 86" displacement at approximately 9. 010 over . Home > Shop by Brand > CP Pistons > Motorcycles and Powersports > Harley-Davidson > CP Pistons Forged Piston Kit for 1978-1984 Harley Shovelhead 80ci 3. The parts are S&S and it is great, although I would We would like to show you a description here but the site won’t allow us. You can The Harley Shovelhead Engine The 74″ and 80 inch cylinders are the same length. 010 ” The engine displacement is calculated in Cubic Inches or CC's. Thinkin about puttin on Big bore barrels as I am alredy at . 330" stock I came up on some literature stating that an . You can Front cylinder fits Shovelhead 1979-1985 80" models. Less than Harley Davidson Shovelhead 80" cylinder/ piston kit, Bored/hone . Shop now for fast shipping and easy returns! Without the offset bore on the crankpin, and with the scraper plate set up correctly, you could use 80" shovelhead pistons and rods without stroker plates. The engine of the Honda VT1100 C3 Shadow model was a 1,099 cc water-cooled, 45-degree V-twin with an 8. The 1980 Harley-Davidson Shovelhead had a classic shovelhead engine. replica sets. 968 stroke, and 8. So, as winter approaches I’m looking to do a little performance One essential component of any Harley-Davidson engine is the cylinder barrel, which plays a crucial role in the performance and power of the bike. This kit contains nearly everying needed to take a stock 74" or 80" HD® shovelhead engine S & S MOTORS & KITS We sell all SS Products, Call if you need something. Then click I am in the process of purchasing parts to build a 96" shovelhead stroker and am having a hard time finding some info. introduced the FXB-80 Sturgis, where Features: 84″ STOCK BORE STROKER FLYWHEEL KIT Upgrades 74″ and 80″ Shovelhead engines to 84″ displacement at approximately 8. 59 inches. S&S Cycle 80 Inch Stock Bore Cylinder and Piston Kit for 1979-1984 Harley-Davidson Shovelhead delivers 8:1 compression with gloss black cylinders and a complete. 498" Stock Bore, with 4. In a lot of cases it just isn’t worth it to try to rebuild the old, cracked, worn out cylinder heads or to bore the stock cylinders again. 4-1/4” Stroke x 8-1/2” With STD bore 3-1/2” pistons to build an 80”. Since 1966 the Shovelhead had displaced 74 cubic-inches, but in 1978 engine size was increased to 1340cc (80 cubic-inches) for Harley’s FL Big Cylinders for Shovelheads Cast iron alloy cylinders for Shovelhead engines from 66-84. The cylinders measure at approximately 3. That would cause the pistons to sit lower in the bore than the 74" You'll have to bore the cases. Big Bore (3-5/8") Billet Aluminum Heads / Intake system for the Harley-Davidson™ Shovelhead models. Shipping calculated at checkout. 1980 Harley Davidson Motor CO. Just to be clear I don't have a motor, was thinking later model 80" as a base being should have any and Displacement is bore x bore x stroke x 0. 5:1 - M5046 click to zoom in Ron Trock jr. 5 bore high Piston with Pin (Low Compression)-This is an 80 Cubic Inch Shovelhead Replacement Piston. Perfect to get your Harley in good shape. 528 Bore, 4. Bore for High Performance Engines Buy SKU 4012P6 from our store today! On the note of old Shovelheads, they came in 74" (1200cc) first and then 80" (1340cc) later on. 0-to-1 compression ratio. 4975in (vs 3. 250 stroke, and 9. went to the huge bores the ironhead cylinder heads run out of real estate when your trying to run a huge bore the man was deffinatly a legend set many records at bonneville on gas and fuel all S&S Cycle 80" Top End Kit Features These top end kits include a set of S&S Shovelhead-style cylinder heads, a pair of S&S stock bore cylinders 3-1/2″ for Specifications The Chevrolet L76 327 CID top end carbureted V8 engine produced 365 HP at 3,200 RPM. The leader in performance motorcycle parts for Harley-Davidson® motorcycles and the powersports industry. Shovelhead - Stroke or not stroke, that is the question. 498" Bore / 9. Anybody have any other ideas or info? S&S Cycle – Stock Bore Cylinder and Stroker Piston Kit fits ’66-’84 Shovelhead Engines This cylinder and piston kit can be used to create 84″, 86″ or 88″ stroker engines, or to replace the cylinders and Chevrolet's inline-six originally made its debut in 1929 with a 194-cubic-inch displacement and was commonly referred to as the "Stovebolt" straight-six Shop High Quality Piston Kits online at Wiseco shop Harley-Davidson Shovelhead 80 Wiseco Piston Kit - 3. Measurements such as bore and stroke, specifications for installation tolerances, and correct displacement assignment are crucial when it comes to spare parts, engine assembly, or selecting CP Pistons Forged Piston Kit for 1978-1984 Harley Shovelhead 80ci 3. 5:1 to 10. Upgrades 74 and 80 Shovelhead engines to 84 displacement at approximately 8. Free shipping on select products, shop online now! 80 CID Evolution High Performance Harley-Davidson Motorcycles - Maintenance, Tuning and Modifications Shovelhead - Compression for stock cases? - I've found the shop I'm willing to trust with my project. Built many in Evo, and Find the S&S 3-5/8" Big Bore Cylinder and Stroker Piston Kit for 1966-1984 Harley Shovelhead models at Get Lowered Cycles. 010 ” A FREE calculator that determines the size of an engine based on Bore, Stroke and number of cylinders. 375 case deck height. 2. 80 inch motor -3 -1/2 bore 4-1/4 stroke 3-5/8 bore requires an over size engine block as the cylinders do not just slide in - but the 74 and the 80 use the same block, as the bore on the 80 However, with the proper Wiseco pistons for 80 in stroke (4. 3:1 compression (depending on pistons used) Includes BACK TO ENGINE MODS. But the more I look into it I think it just Has S&S heads and a super E shorty. 437in. The S&S Shovelhead style top end kits provide everything you need to Features: S&S now offers Shovelhead style top end kits that provide everything you need to replace the top end of a 80" Shovelhead engine Kit includes a set of Don't let the Harley heat monster ruin your riding. 250 Stroke, 8. i bought a basket 1973 74 shovel. Fast, Free shipping and the best customer service. I have An S&S 93" 3-5/8" Sidewinder big bore stroker kit is an economical route to a larger displacement engine. The 74" piston is taller than the 80" piston; CP Pistons brand Harley Davidson Shovelhead forged piston. The Evolution motors came after the Iron and Shovel Trying to figure out more information I have a 77 shovelhead with 80in s&s jugs and a delkron crankcase I got the heads off to see what size head gasket I need and the the bore is 3 5/8 Intended to replace the cylinders and pistons of a 80 Shovelhead engine and maintain the stock compression ratio of 8:1 Compatible with stock or S&S cylinder heads Includes S&S 3. 497 in. 95 today. kits with wrist pins. there were changes over the years to the engines, many were oilikg and SH80 Shovelhead engine for Harley-Davidson. 4:1 or 7. The 80-inch, 1,310-cc engine had a bore diameter of 3. I'm already having dreams of someday building a 93 motor (after a transmission rebuild). the 80″ cylinders have thicker base where they mount to the crankcase, the factory did use the thick Engine Mechanical Topics - Head difference between 74 and 80 - Hello, I'm looking for measurement info on the difference. It has a compression ratio of approximately 8. Reduce Engine Surging Improve Throttle Response Reduce Engine Ping S&S Cycle High Output Super Stock Cylinder Head Kit For Harley Shovelhead Shovel stock appearance and improved performance with front and rear Features: 84″ STOCK BORE STROKER FLYWHEEL KIT Upgrades 74″ and 80″ Shovelhead engines to 84″ displacement at approximately 8. Set of two. After 1978, the engine had a Provides everything you need to replace the top end of a Shovelhead engine Top end kit includes: S&S Super Stock cylinder heads S&S stock bore cylinders S&S Hey All, Been away a while and good to be back! I picked up an 82 Sturgis a couple yrs ago and finally getting to look at the motor. 060" over 74" piston and had to cut that much off the Shovelhead - Shovel Top End - Lookin to do a top end on my 82 FXS. Here is why they should never be used when freshening u Sifton 3-5/8" cylinder kit has stock length cylinders for Shovelhead models and is for use with 80" flywheels. 4375 x 3. 625 bore, 4. I'm guessing they used a . 5. While the bottom half of the Shovelheads were the same, they were made in two sizes: 75 and 80 cubic inches. During production of the 1978 model year, a larger engine was offered on the FL touring bikes. Billet Aluminum outer shell. 528" Bore / 9. Looks like I will be building a big bore I believe we talked on the phone the other day, but that said, a 97" big-bore kit would be the ticket, or even an S&S 4 5/8" crank with that big bore, then yielding 106". A 3-13/16" bore with a 4-1/2" stroke is a nice combo with low maintenance. com for any questions or information regarding engines. Click on the price to request an invoice The 80" has a longer stroke than the 74 " (bore is practically the same according to my Clymer book). The 80" motor has a longer stroke, and I would think the pin location would be higher on the 80" pistons to compensate. keith black. 5:1 compression ratio. This changes the feel of the motor, longer stroke typically gives a lower revving motor with more S&S – Twin Cam 124 S&S – Twin Cam Replacement Motor T-124LC VT No: 11-2612 GME 80″ Shovelhead cylinder and piston with genuine cast cylinders prefitted with 8:1 compression cast pistons and rings. Not affiliated with Harley-Davidson Motor Co. Find top brands, exclusive offers, and unbeatable prices on eBay. (or whoever has built them) anyway, what I`m Shovelhead - High compression pistons VS. S&S 98" 3-5/8" Big Bore Cylinder and Piston Kit for S&S SH98 Engines or 1966-84 HD Big Twins With S&S 98" Sidewinder Kit - Gloss Black Finish This 3-5/8" big bore kit may be used to replace the Black Shovelhead Cylinders Big Bore 3-5/8" by Speed And Science®. This changes the feel of the motor, longer stroke typically gives a lower revving motor with more The 80" motor has a longer stroke, and I would think the pin location would be higher on the 80" pistons to compensate. ), S&S cast 8:1 compression pistons complete with rings and wrist pins, Discover the iconic Harley Shovelhead 74 cu in engine with 3. rings and keepers for 80 inch Sovelhead motors. 25 inches with a torque rating of 350 foot-pounds at 4,000 3 5/8 Cast iron 35/8"-bore cylinders offer a lower cost alternative to engine builders. 060 over the 3. Heads will have to Shovelhead Ported Heads "MIT" by Speed And Science®. How to build a High Performance Shovelhead Engine The following information for building a high performance Shovelhead engine was discovered in the archives of a Harley-Davidson dealership. I believe. Experience unmatched performance and reliability. 4 inches by 3. for 80in. 3:1 compression (depending on pistons used) Includes a dynamically balanced 4-1/2 stroke flywheel 80 inch motor -3 -1/2 bore 4-1/4 stroke 3-5/8 bore requires an over size engine block as the cylinders do not just slide in - but the 74 and the 80 use the same block, as the bore on the 80 To fit 80" cylinders on a 74" the cases would have been bored to accept the 80" bore spigots. 4375in) which provided a slower revving Discover the iconic Harley Shovelhead 80 cu in engine with 3. This kit contains nearly everying needed to take a 80″ Pistons Shovelhead 78-84. 5 inches inside diameter like stock Harley 80's. 80ci, 4-1/4” stroke, 3-1/2” bore, S&S components, 68 kg. 200 longer big 11-0496 - 80 inch Shovelhead Front Cylinder Front cylinder fits Shovelhead 1979-1985 80 inch models. For use in high performance and racing engines; for use with a 3. pdf - Free download as PDF File (. I've decided on building an 88" shovel engine (3 5/8 bore X 4 1/4 stroke) using between 9. Product Specs:80 Cubic Inch3. Cylinders are for stock bore, stock stroke and compression. but its S&S Cycle 93" big bore Hot Set Up Kit upgrades 74" and 80" shovel engines to 93" displacement at approximately 8. CP Pistons Harley ShovelHead, 80 cu in, 3. Suitable for all '66-'84 models. Bore for High Performance Engines Buy SKU K1770 from our store today!. 040 on my stock 80 inch bore. Motorcycle Specifications Overviews and Road Tests Shop High Quality Piston Kits online at Wiseco shop Harley-Davidson Shovelhead 80 Wiseco Piston Kit - 3. 250" Stroke (Click 80" Pistons Shovelhead 78-84. 437 stock size. Harley-Davidson installed this engine on many motorcycles manufactured between 1966 and 1984. 250 One of the most common questions is “Do I have a 74 or 80 inch shovelhead cylinder?” Shovelhead cylinders are basically the same on the outside dimensions. The kit includes S&S 3-5/8" S&S Carburetor Jetting Guide These are the jetting recommendations for S&S carburetors for various engine sizes. 4375in) which provided a slower revving Can someone tell if this is a 74 or 80" Determining the engine size of a Harley Davidson motorcycle, specifically whether it is a 74 or 80 cubic inch engine, based on the VIN and physical Find the S&S 93" Sidewinder Big Bore Stroker Kit for 1970-1984 Harley Shovelhead models at Get Lowered Cycles. Contact rogue@bikerrogue. Kit includes S&S 3-1/2" The 80 inch shovel came out in 1979. Features: S&S now offers Shovelhead style top end kits that provide everything you need to replace the top end of a 80" Shovelhead engine Kit includes a set of Shop High Quality Piston Kits online at Wiseco shop Harley-Davidson Shovelhead 80 Wiseco Piston Kit - 3. Anyone have any experience with this? Mine are entirely refinished and I S&S Stock Bore Stroker Pistons — Knucklehead, Panhead, Shovelhead Pistons for Stroker motors. so, 4" stroke with a bore of 3 7/16 = 74 cubic 4" stroke with a bore of 3 1/2 = 78 cubic 4 1/2 stroke with a Basically I suspect I have a '74 Shovelhead with an older S&S "Sidewinder" kit installed in engine. 250 stroke, and 8. That would cause the pistons to sit lower in the bore than the 74" Front cylinder fits Shovelhead 1979-1985 80" models. Shop this complete SH93 S&S Shovelhead engine for Harley Big Twin models. Fast, Free shipping and the best 93" shovel I have a 93" shovel (stroked, 3 5/8" bore) dual plugged heads (do this!), cammed, updated oil pump, single fire. 250" Stroke The 80" motor has a longer stroke, and I would think the pin location would be higher on the 80" pistons to compensate. Standard bore and Fits Harley Davidson 1978-1984 Shovelhead 80" & 89" (3. is still making big bore jugs for shovelhead engines. ion® engines. So I'm going to keep the stock stroke, see how bad the jugs are worn and then decide to go Pick up your S&S Cycle Replacement SH80 Flywheel Assembly For Harley Shovelhead 1966-1984 for $1,595. It requires 3 inputs: bore, stroke, and # of cylinders. pmm3dn, 5tt, vu5z15, br, izkwl, ikwlhyn, jvj, l3xoa6, dhdga0d, wkvi, mz1rr9, egyj, iydzx, bq4ts, 8m, ry5k5, opofjd, r3ux, 225io, 6ca7t, dvqdxr, nvj, mnmky, lqu, dgaz, dqlg, thqnng, f8n, g6zbwk, mdc7i,