Nov 20, 2010 #1 B buickboy Active Member Joined May 24, 2001 Messages 1,151 My motor is at 3.840 bore size. Cometic website only shows P/N C5691-040 with a bore size of 3.860. Is this my only choice, and is that what i need .020 size bigger bore gasket? Mitch
My motor is at 3.840 bore size. Cometic website only shows P/N C5691-040 with a bore size of 3.860. Is this my only choice, and is that what i need .020 size bigger bore gasket? Mitch
Nov 21, 2010 #2 F forcefed3.8's Buckeye Bullet Joined May 26, 2002 Messages 3,845 3.86 is what you need.
Nov 21, 2010 #3 N Nick Micale Tech Advisor Staff member Joined May 26, 2001 Messages 9,208 TA Performance has a large selection of cometic gaskets.