– Racer forum discussion … I have chatted with Randy Naquin ( aka Automotive Breath ) on this forum and he has been modding a lot of heads with the grooves and good success in torque & MPG increases, along with decreased ping. AMC V8 Engines - From GEN-1 Nash/Hudson/Rambler V-8s (1956-1966) through to the GEN-3 AMC Tall-deck (1970-1991) AMC V8 hp/Torque, Compression & Bore/Stroke by year Jeep Wrangler JK Wiseco PTS538A45. Also, I have pics of the ROL Xtreme 360-401 head gasket vs. the Felpro HiperBlue 304 gasket. It allows a 10:1 compression engine to run on 87 octane. I'm going with the 304, since it better fits the bore diameter. It was an optional engine in 1971-1981 Jeep CJ-5 … Stainless steel intake/exhaust washer/pinch bolt kit including: (8)Winged washers, (3)Round washers and (11) 12pt ARP bolts. 74; Engine Break-In Oil Additive (1 Bottle) . Bulltear Pro Products Website and E-Store. Carb has NO JETS. Your donations help keep this valuable resource free and growing. Jeep, with a decent increase in power over a stock AMC 304/360. I modified the Offy 360 intake for use with the Fish carburetor, cutting the plenum devider down about 1.25" to help better divert the air flow, since the 1-barrel fish is positioned directly over the divider. It's a nice package. Oversize symmetrical radiused valve pockets allow use of high lift cams and big valves. "Stroker" engines have a crankshaft with a longer piston stroke than original. The max recommended overbore on a 304 is 3.875", or .125" over. The 304 was dropped by the end of 1981—likely due to the fact that AMC's six-cylinder was making more horsepower than it, and its emissions were no better than the 360's. ... Cam and Lifters, Hydraulic Flat Tappet, Advertised Duration 300/304, Lift .497/.520, AMC, 290-401, Kit. Wiseco PTS540A3, copyright © 2012 Motorsports Parts Corporation / ForgedPistons All Rights Reserved, AMC 360 Pistons Pro Tru Street Forged Dish Top 360 Piston Kit .030 Oversize 9.5 - 1 comp PTS538A3, AMC 360 Pistons Pro Tru Street Forged Dish Top 360 Piston Kit .045 Oversize 9.5 - 1 comp PTS538A45, AMC 360 Pistons Pro Tru Street Forged Flat Top 360 Piston Kit .030 Oversize 10.5 - 1 comp PTS539A3, AMC 360 Pistons Pro Tru Street Forged Flat Top 360 Piston Kit .045 Oversize 10.5 - 1 comp PTS539A45, AMC 401 Pistons Pro Tru Street Forged Dish Top 401 Piston Kit .030 Oversize 9.5 - 1 comp PTS540A3. Wiseco PTS539A45. The AMC 304 V8 had a displacement of 303.92 CID which produced 210 hp in 1970-71 and was built starting in 1970. This forged AMC 360 piston set is for use with a .030 oversize bore of 4.110 inches | standard stroke crankshaft of 3.440 in. Bore, Rings, Gasket Set, Main and Rod Bearings, 0.010 in. A 3.85" stroke fits nice in a 401 crank, and Molnar has a 2" journal proper AMC offset 6" long rod specifically for AMC strokers. Oversize symmetrical radiused valve pockets allow use of high lift cams and big valves. The groove in the head helps shoot the flame front into the quench area of the piston for a more complete burn. GSX And XR Pistons Come Standard With The Patented X Groove Which Fights The Damaging Effects Of Fuel Washdown And Wear Debris. The Milodon head studs are too long on the exhaust side (3 places) and hit the header flanges. My 304 is being stroked with a 390 crank, aftermarket forged 401 rods and custom Diamond Racing forged pistons. He gave me feedback on where to place the groove on the AMC heads, since we have the angled spark plugs. Free shipping. In most cases by replacing the flexplate/flywheel this AMC 427 CID engine will replace that tired AMC 304 or AMC 360 or 401. We also have matching 4340 Billet H beam rods to work with these 360 AMC pistons. Limited Lifetime Warranty. It uses a 401 block that had been bored to 4.195 and a stock forged 401 crank that has the rod journal turned down to 2.100 for a 3.800 stroke. The longer stroke should help the low end torque making it ideal for the full size Jeep fans too. Complete kit will mount two TorqStorm® Superchargers to a 304-401 cid AMC motor. | Compression is 9.5-1 with a 56cc head chamber, 4032 forged aluminum with ArmorGlide skirt coating. 360 390 401 AMC stroker crankshaft billet steel 4 inch stroke. 401 AMC Wiseco Pro Tru Street series forged reverse dome top piston set. 9 watching. Here is a brief write up of a stroker build. 360 390 401 AMC stroker crankshaft billet steel 4 inch stroke. 's … Ask about our core buy back program, available on select cranks! I'll get pics of that up later. 401 AMC V8 parts in-stock with same-day shipping. We have rods available for the AMC 360, 390 and 401 engines with stock stroke crankshafts and also special AMC stroker rods, 6.000 and 6.125 inch long for use with either a 2.000 inch or 2.100 inch crankshaft rod journal size as used on many AMC stroker cranks. Select all that apply 1 (+ $143.00) … . Our "Complete Engines" include the oil pump, oil pump screen, oil pan, oil filter adapter, oil filter, dipstick, timing cover, balancer, valve covers, intake manifold, and spark plugs. The 401 was the biggest, strongest engine that AMC offered. In engine families that have an interchangeable cam, such as the 290-401 AMC V-8, a cam that's smooth and docile in a 401 might turn a 304 into a low-rpm gutless wonder. Crankshaft kits for your AMC. $1000-$1700 for a "NEW" stroker kit! Grooves are angled towards the exhaust valve side of the spark plug. They work with either a floating piston pin or pressed pin type connecting rod. For all out high rpm maximum durability you could keep the stock stroke … No, it's not a Mopar engine, it's all American Motors with a 4.08 bore and 3.44-inch stroke … They are not the same as a 360, and a normal 360 is not the same as a 401. Summit Racing Gift Cards - Always the Perfect Gift! | rod length of 5.875 in. Here are more pics of the build. We also have matching 4340 Billet H beam rods to work with these 401 AMC pistons. I have also decided to NOT USE the Holley Street Dominator. $40.00. It would require taking the heads off and grinding or milling the embosses for clearance. Jeep, with a decent increase in power over a stock AMC 304/360. | Compression is 10.5-1 with a 58cc head chamber or 11.6-1 with a 50cc chamber. Stock 390 crankshaft stroke … Wiseco PTS538A3. In a slight hybrid design, the rod journals were ground for Chevy-sized 2.100-inch Clevite H-series bearings (original size was a beefy 2.250-inch). ! We also ran into some 'speed bumps' with parts that don't fit or don't fit without more modifications needed. We also have matching 4340 Billet H beam rods to work with these 360 AMC pistons. It was rated at 130.5 hp in 1979. RIG: 1979 CJ 7 4.2L, TH 400, QT w/ part-time conversion and low range, 33" w/ 4" total lift! This AMC 304 crate engine by Blue Monkey Performance would be EXCELLENT for that AMX, Jeep, Wagoner, CJ, CJ5, CJ7 and etc.This engine comes equipped with a Edelbrock Dual Plane square bore flange intake and will run on leaded or unleaded Premium pump fuel. AMC/Jeep 401 PERFORMER Engine Kit HI-COMP HYPER Pistons+Rings+Bearings+Timing. | Compression is 10.5-1 with a 58cc head chamber or 11.6-1 with a 50cc chamber | -8.6cc, 4032 forged aluminum with ArmorGlide skirt coating. See all 35 photos Working with the K1 Technologies 4.00-inch stroker crank (0.426 inches greater than the stock 390's 3.574-inch stroke), R.A.D. EXHAUST: Doug Thorley Tri-Y Headers for Full Size Jeeps. | -8.6cc, 4032 forged aluminum with ArmorGlide skirt coating. $14.90 shipping. Rhyne also added a provision for the oil-pressure sensor in the rear to obtain more accurate readings. AMC 304 Rebuild, Complete AMC 304 motor and engines V8, 304 Crate Engine, AMC 304 Heads suitable for AMC Rebel FORD 302 & 347 STROKER ENGINES, FORD WINDSOR 351W, & 408 & 427 STROKER ENGINES and FORD 351C ENGINES: CLICK HERE Catalog ID#Ford-10 . Engine rebuild kits for your AMC. The 4340 material is a true 4340 unlike foreign counterparts. Net result is approx.