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Bitter · 08/03/2008, 11:46 AM

you have to be pushing alot of power or have a really poor tune to worry about the 4g63 pistons. heck the NA 4G64 pistons are good to 13-15PSI no problems, probably more but they get replaced with rebuilds to lower the CR a little.

4G63 8.8 piston - Google Product Search

08/03/2008, 11:46 AM	#2 (permalink)
Bitter Zoom FTW Join Date: May 2004 Location: Homewood, Il Vehicle: 2007 Camaro Posts: 29,234	you have to be pushing alot of power or have a really poor tune to worry about the 4g63 pistons. heck the NA 4G64 pistons are good to 13-15PSI no problems, probably more but they get replaced with rebuilds to lower the CR a little. 4G63 8.8 piston - Google Product Search __________________ bosorio187: dude bosorio187: the streets are my race track bosorio187: i am tardo 1993 Geo Prizm 7A-FE/A245E with 130K miles. K&N drop in, deleted intake snorkel, +15 degrees base timing, Ebay Header, no rear muffler=zoom zoom peppy :) - still need to do the tbelt +10k miles overdue.