Originally Posted by starin
So I got alot of help from the folks on here with my future transmission installation and at the same time as i do that i think im going to get rid of my cast iron manifolds.
within my budget is either the hedman 28140 or the hooker 4902. do you know which one fits better. my car is a 1968 pontiac firebird with a pontiac 350, it is an automatic with power steering. i installed the original cast manifolds myself which were not too bad considering how hard a few bolts were and how heavy the suckers were, i heard the aftermarket headers are much lighter and will increase power substainually since the cast manifolds are very restrictive. my main concern is how easily they will fit.
Thanks in advance
I used Hedman in a '81 Camaro w/455. Fit great, but there's a brace that gets in the way on these cars that needs removed. IIRC your 1st gen F-body does not have that brace. Had M/T headers on a '68 LeMans w/428 that fit like hell, but ran good.
Use 4-tube headers, not 3-tube, regardless of the brand. Do what it takes to install whatever you get correctly- even if that means lifting the engine or whatever. You might find using new motor mounts gives some extra clearance depending on how old yours are.