Well broke 4 bolts on Intake manifold to head. So I would like use stainless bolts. Anyone know what right size bolt for that.?

Need replace all bolts on valve cover with allen screw which is more easy to use allen wrench under intake body. What size it use?

Need replace exhaust manifold it crack. I would like use stainless bolt would it work or no? Is 5 or 8 grade bolts be ok for this?


Is chrome bolt ok? I can get chrome bolts from friend.

 

Thread pitch for those bolts usually are 5/16-18 on the intake as well as the timing cover.... the valve cover bolts are usually 3/16-course thread I dont know the pitch on them....

 

Valve cover bolts are 1/4-20

If you are going to use stainless, make sure that you use anti-seize on them.