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Author Topic: 85 5.0L roller motor deep tech question PunkINa5.SLOW ¯ Member # 10 posted                              I have read from some sources that the 85 mustang (first year for the forged slugs) had a piston with a thinner crown on it, tho a TRW still. It is rumored to have netted an 8.8 to one compression when used with the stock head gaskets and stock E7s. Anyone verify that this is true? I do know that SOME motors were produced in the early years with B 303 camshafts and that ASC and Saleen actually got a few of these motors along with some folks that received them as replacements for warranty work. -------------------- OUTTA THA DRAMA R.I.P. MIKE STARKEY MY BABY BROTHER 12/8/77-5/17/03 Posts: 2495 | From: MTZ | Registered: Sep 2000  |  : PunkINa5.SLOW ¯ Member # 10 posted                              Nevermind. I do see the mention of metric rings in here and low and behold....8.4 to one That sux.. The GT had finally topped the golden 200 horsepower mark! To accomplish this feat, a number of enhancements were made to the 302 HO (still topped by the 600 cfm Holley 4V with dual snorkel 460 air cleaner) including the addition of a racing-style roller lifter camshaft, stainless steel tubular exhaust manifolds and forged 8.4:1 pistons (replacing sandcast pistons) with thinner, lightweight rings to further reduce friction. Of course, these changes necessitated a revised block and heads to accept the taller roller lifters. Exhaust restriction was reduced by splitting the exhaust pipe behind the catalytic converter and adding dual mufflers and tailpipes. Automatics still came only with the lower performance 302 HO and throttle body fuel injection, even though horsepower was upgraded to 180 hp early in the model year. -------------------- OUTTA THA DRAMA R.I.P. MIKE STARKEY MY BABY BROTHER 12/8/77-5/17/03 Posts: 2495 | From: MTZ | Registered: Sep 2000  |  :

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