Originally Posted by vinniekq2
headers bolt to the heads,lol.
tube size and length is related to horse power produced with the sum of all parts.
dont buy big tube race headers for a mild street engine. 2 inch primaries are good to 650 hp or more.
Tell us about your application?
So its a 1974 chevy shortbox 4x4 I had a 402 in it prety much stock til we pulled it the other day and found 1 broken piston and 1 or 2 pistons w/ broken rings...we were gona rebild it til today my dad herd of a 70's pickup with a 454 so i mite go take a look at that soon and maybe put it in my '74...if that 454 just has regular exhaust manifolds should i use them or my headers??