has anyone ran piston to valve clearance on the exh. .080 ths. and it worked, im thimking I need to cut the exh. pocket a little but just wanted to see if someone has tried it.
Thanks
It depends upon the engine design and condition. Our 451 had .065" clearance on the exhaust valve. Solid roller 278/280 @ .050, .800/.800 lift @ 1.6, 275# at installed height and 780# over the nose @ 7,600 rpm. No problem.
Not to hijack but I'm bringing this thread back, I finally got my heads back from the shop and mocked everything up, looks like with my head gasket I'll be a little tighter, .075 on the exhaust. Put it together or get thicker head gasket?