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I have been milling over engine combos for some time, and think I have my combo picked out. Let me know what you guys think. It is a late model 355 with unmolested bowtie heads (screw in 3/8 studs, guideplates), an LT4 hot cam; 218, 228 @.050 with .525 lift with 1.6 roller rockers, hyper pistons (9.0 to one with 64 cc heads), x-rods, stock crank, cast rings, clevite bearings, a street avenger 670, performer RPM or weiand stealth intake, proform HEI, 4.55 gears in a ~3400lb corvette with a T-56 6 speed tranny. Some stuff I have, some I am not sure on. The shortblock is done, as is the tranny and rear end. Any more info needed, let me know. Thanks, guys.
Re: Opinions on this engine combo please? (boredsoIstrokedit)
You might need to rethink your compression. My 355 ci with 2 valve relief pistons 4 cc and tighter quench is more like 10.5 c/r with my 64 cc. Those Bowtie heads what is the casting number? Are they the 292 double hump?
I should also add that if it's power you want then 10.5 is a good thing. Mine runs very well on 91 super unleaded. My double hump 186 castings have polished chambers and I use Bosch 4 tip platinum plugs
The heads are Bowtie phase II 034 heads. The compression is kinda set with the shortblock, and I was hoping not to have to mill the heads. I may follow some peoples advice and bump the compression up 1/2 a point, though. Thanks.