Sep 3, 2011 #1 J jaymax173 Member Joined Dec 17, 2009 Messages 32 Reaction score 0 Points 6 ...restrictions on them since 80s? Is it because chevy still likes to use builds from 90s with just improved fuel injection and heads? Or there engines wont tolerate tighter bearing clearances and still get the same mpg?
...restrictions on them since 80s? Is it because chevy still likes to use builds from 90s with just improved fuel injection and heads? Or there engines wont tolerate tighter bearing clearances and still get the same mpg?