they are stock sbc, not headers.my problem is that i do not like the way i am having to force the bolts into the bolt hole. i am afraid that i will cross thread the bolts. i need to get the holes in the manifold realined or at least alot closer to the bolt holes on the head. thank you, Joe ps i have herd of guys walering out the holes i do not think that would work out very well at all.302 Z28 said:I have seen stock cast iron manifolds that have warped and been resurfaced. The older Ford 352 and 390 engines were notorious for exhaust leaks at the manifolds. Most times the resurfacing is just a temporary fix as the manifolds warp again. I have had better success using dead soft copper gaskets than having the manifolds resurfaced.
I have had 4 of these for years. They work as advertised. I have yet to crack a manifold when spreading them back out.Soul_Hunter said:
why do you need a set. i am planning on mounting the middle first and then one end at a time.Soul_Hunter said:i've been using those manifold spreads for years and i've never had a problem.
i feel if you work on SBCs and don't have a set in your tool box, no matter how many tools you have your tool set isn't complete without them.