amc 360 bore and stroke

I prefer the AMC 360. Do not use 304 heads, these have smaller valves and runners. In 1971, the AMC 360 have very high rating. The AMC 360 was introduced in 1971 in J-series pickups and Wagoneers. R. rguest3 Legacy Registered User. I would assume these are gross ratings and the later are net ratings. My original thought is that this would be an ideal engine for the Jeep guys contemplating a chevy swap. Maximum factory recommended overbore is only 0.020 in, though they are commonly bored 0.030 in. The AMC 304 was introduced in Jeep vehicles in 1971 in J-series pickups and Wagoneers and in 1972 in the CJ vehicles. A 401 is not just a bored out 360 block. Forged Pistons Are Stronger And Longer Lived Than Cast Pistons. 360 piston pin diameter = .931" 390/401 pin diameter = 1.001" SB Chevy pin diameter = .9272" Remember you can not use a 360 rod on a 390 crank. In 1970, AMC changed the head design to the later known "dog-leg" exhaust port. The AMC and Kaiser engines do not share bellhousing bolt patterns. Bore x Stroke, 3.75" x 3.44" Ok the diff is just .330" between them this would mean you would have to bore the engine out 330 thousands to fit the larger pistons. Production continued through 1983 in Argentina where AMC used it in passenger cars and Kaiser in Jeeps. The 360 heads have bigger valves. Stock AMC main journal sizes, Rod Journal Size is 2.100 small block chevy diameter. Bore, Standard Rod, Standard Main, AMC, 360, Kit Part Number: FEM-205715M-300 DURING THE FIRST YEARS THE MOST POWER CAME FROM A 325 HORSE AMC 390, WHICH EVENTUALLY WOULD GET FACTORY STROKED TO BECOME A 401. Rear Flange 6 Bolt AMC 1971 and earlier style. GEN-3 AMC Tall-deck (1970-1991) [edit | edit source] Bore: Stroke: Special Notes: 250ci: ... same high nickel casting as 401 but bore of 360 ... 1970 390ci that was made before they increased the stroke by 0.11 inch. The new-generation AMC V8 was first introduced in 1966. You cannot make either of them into an actual AMC 401. All blocks share the same external measurements and thus can be swapped easily. The GEN-2 AMX 390 produced 315 hp (235 kW) and was built in 1968 and 1969. This engine produces a maximum power of 294 PS (290 bhp - 216 kW) at 4800 rpm and a maximum torque of … With its over-square bore and stroke, it was very much built for low rpm torque. Early 304s performed well, so well that frame changes were made to … Dome Volume Comp. The AMC 360-cubic inch displacement V-8 engine was an overhead-valve design with two valves, one intake and one exhaust, per cylinder; The cylinder bore was 4.08 inches and the crankshaft stroke was 3.44 inches; The bore spacing on the engine block was 4.75 inches center-to-center. Itstillruns.com DA: 15 PA: 34 MOZ Rank: 49. The 390 had a 4.165 inch bore and a 3.574 inch stroke. All three engine sizes (290, 343, and 390) share the same basic block design — the different displacements are achieved through various bore and stroke combinations. Bore, Inches (Relative) Bore, Inches (Absolute) 273, 318 & 340 3.31” Stroke: 360 3.58” Stroke: Mopar 3.79” Stroker: Mopar 4.00” Stroker: Std. GSX And XR Pistons Come Standard With The Patented X Groove Which Fights The Damaging Effects Of Fuel Washdown And Wear Debris. In most cases by replacing the flexplate/flywheel this AMC 360 will replace that tired AMC 304 or AMC 360. It was a dependable engine with reports of them going 250,000 mi. If you want to use a 1972 or later style flexplate / flywheel a concentric adapter will be required. All six engine sizes (290 304 343 360 390 401) share the same basic block design. 3.800 stroke/bore CID possibilities 4.08=397ci 4.115=404ci 4.125=406ci 4.195=420ci 4.250=431ci I would not use a 327 AMC set of rods for any stroker build. AMC 360 Engine Build - 370-Inch 480HP AMC Combo Four: Lunati "Small" Cam For you guys who want to run power brakes and have a milder idle, we swapped in a smaller Lunati cam with 221/230 @ 0.050 and 0.484-inch intake/exhaust lift with a 1.6:1 rocker.

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