adamforsythe 1/2 ton status Joined Oct 16, 2004 Posts 1,394 Reaction score 1 Location Maine Apr 21, 2008 #1 What is it????? 3/8-16 in., OR 5/16-18 in.
DPI 1/2 ton status Joined Jun 22, 2000 Posts 2,790 Reaction score 1 Location In the Burbs close to Tulsa, OK Apr 21, 2008 #2 The intake bolts I have r&r were course thread 3/8". That was on a pre-91 motor...
4X4HIGH 1 ton status GMOTM Winner Joined Dec 14, 2001 Posts 22,423 Reaction score 662 Location Fremont, CA. Apr 21, 2008 #3 1995 and earlier are 3/8" x 16, vortec stuff is 5/16" x 18.
adamforsythe 1/2 ton status Joined Oct 16, 2004 Posts 1,394 Reaction score 1 Location Maine Apr 21, 2008 #4 sweet thanks