Posted by M Diesel on December 18, 2010 at 18:12:39 from (68.104.127.180):
In Reply to: 350 Olds Rocket V8!! posted by LOU from Wi. on December 18, 2010 at 11:25:27:
Quoting Removed, click Modern View to see
For 455s with 10.5s, take another 60 off the heads. Be sure and get rid of the 8.5 or 9.5 units they were required to install for production. And never use them crap Felpro style gaskets. Stock metal ones. Change the springs and related parts, they are intentionally flattened at 5500. I never worked with that particular intake so it may be okay? Heads already flow well beyond Chevy. Any stock Olds 350 head will exceed 300 CFM with very little work. Run bottom end bearings a little loose. 10 to 20 psi hot idle. Stock 455 bottom end will make 7500 RPM. Mine was never afraid of anything that said "Hemi".
GM corporate stepped on Olds all the time. Despite that, Olds had pistons available to 12.5 if you could find the part numbers. In later years I found that you could get parts like dual overhead cam 4 valve aluminum heads and aluminum blocks.
Got a brother who has a hard time with people who build Chevys. Ha ran a dyno service, and nearly all "built" cars that came in made less than stock HP. The arguments were endless. People who only have worked with Chevy will never realize how little they know about OEM engines.
Sorry, but low RPM statements kinda rankle me, especially compared to those old Chevy valve trains and soft metal blocks.
Who can quote the wrist pin height change in replacement pistons for small block Chevys? And vs other brands?
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