Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - how do you pick header gaskets for SBC
View Single Post
  #16 (permalink)  
Old 12-08-2012, 06:47 PM
lakeroadster's Avatar
lakeroadster lakeroadster is offline
Hot Rods are Built, not Bought

Last journal entry: Lakeroadster's '31 Model A Tudor
Last photo:
Join Date: Dec 2001
Location: High Plains - Rocky Mountains
Age: 56
Posts: 806
Wiki Edits: 0

Thanks: 64
Thanked 175 Times in 142 Posts
Originally Posted by bentwings View Post
I use SS bolts on the heads with lots of never-seize and standard gr 8 bolts ont he collectors ...again with never-seize. I don't like using the SS bolts but rust is more of a problem than strength.
Stainless has a higher thermal expansion rate than steel. Basically that means if you take two bars of equal length and heat them up, one stainless and one steel, the stainless bar will grow longer than a steel bar. Therefore every time the engine heats up, if you have steel headers and ss header bolts, the bolt load drops.

Steel bolts are a better choice for this reason.
Reply With Quote