05chevy gear head Joined Jul 17, 2010 Messages 635 Sep 2, 2010 #1 ok im looking at two didferent turbos one is a 66/73 with .91 a/r the other is a 63/68 with a .88n a/r what would be better for my 5 speed 12 valve with 140hp ddp's.
ok im looking at two didferent turbos one is a 66/73 with .91 a/r the other is a 63/68 with a .88n a/r what would be better for my 5 speed 12 valve with 140hp ddp's.
