Need help with primary size on gm flange
Need help with primary size on gm flange I spent the last hour looks for the primary size on the gm #12480130. I need to order my bends asap and i cant find the primary size
I dont want to wait till the flanges get here. I've see 1 3/4" and 1 5/8" posted. but which one is it? thanks
I dont want to wait till the flanges get here. I've see 1 3/4" and 1 5/8" posted. but which one is it? thanks 
either
The holes in the flange will let you stick the 1 5/8 tube in the hole and weld it on the inside
The 1 3/4 will match the hole but you have to weld on the outside.
The holes in the flange will let you stick the 1 5/8 tube in the hole and weld it on the inside
The 1 3/4 will match the hole but you have to weld on the outside.
Last edited by extremetoy; Dec 16, 2008 at 12:52 AM.
