First a little background, car is a 69 Camaro Z/28 with a 406 SBC that is getting a new top end. It had a set of Bowtie 034 angle plug heads on it and what is believed to be an old set of Blackjack Alumanized 1-3/4" primary tube headers on it. Car has original power steering, and there was a clearance issue found when I pulled the old headers off during dis-assembly. The old headers were rubbing the power steering box in two locations on the #1 cylinder primary tube to the point that the wear spots are almost worn through the pipe. My plan was to re-use these old headers IF they would fit and TIG weld the wear spots.
Seeing as the plan was to try and use the old headers, I ordered AFR 210cc angle plug replacement heads (exhaust ports raised by .25" over stock location) and yesterday I mocked up a new head on the drivers side and fit the old header in. The header clearance issue is more of a problem now and that was without any gaskets which when added would only make the clearance issue worse. So I've decided with all the time and money I'm putting into the top end upgrade, I'd be better off to replace the old headers with something that will fit and allow the heads and new retro roller camshaft to reach their full potential. Additionally I'm thinking down the road that some day I might end up building a 427 small block, so I want these new headers to be able to handle that level of cubic inches.
With that in mind, I think I should be looking for a set of 1-3/4" primary into 1-7/8" primary long tube headers, but would like validation (or correction) on my thoughts. After searching and reading up on others experiences, I'm leaning towards a set of Dynatech MuscleMAXX Headers 740-21310. The Hooker Comps appear to have fitment issues, the Super Comps appear to fit better than the plain Comps, but at a higher cost.
Appreciate any and all feedback?
Thanks,
Scott
Seeing as the plan was to try and use the old headers, I ordered AFR 210cc angle plug replacement heads (exhaust ports raised by .25" over stock location) and yesterday I mocked up a new head on the drivers side and fit the old header in. The header clearance issue is more of a problem now and that was without any gaskets which when added would only make the clearance issue worse. So I've decided with all the time and money I'm putting into the top end upgrade, I'd be better off to replace the old headers with something that will fit and allow the heads and new retro roller camshaft to reach their full potential. Additionally I'm thinking down the road that some day I might end up building a 427 small block, so I want these new headers to be able to handle that level of cubic inches.
With that in mind, I think I should be looking for a set of 1-3/4" primary into 1-7/8" primary long tube headers, but would like validation (or correction) on my thoughts. After searching and reading up on others experiences, I'm leaning towards a set of Dynatech MuscleMAXX Headers 740-21310. The Hooker Comps appear to have fitment issues, the Super Comps appear to fit better than the plain Comps, but at a higher cost.
Appreciate any and all feedback?
Thanks,
Scott