One of the things I intend to do in the not-too-distant future is install a new exhaust system on my 72 Cutlass Supreme. For those that don't know, it's equipped with a 455. It has a set of Hooker headers and what I believe is a Flowmaster exhaust system but the previous owner(s) used the typical tape and goop to patch leaks and cracks as they came along. So I'm looking for a reasonably priced set of headers that will hold up to the demands of the 455. I prefer ceramic coated but I realize they're probably out of my
reach pricewise. I'd like to get away with spending around 700 bucks from the whole system (I think it's t 2-1/2 inch) .

So does anyone have e a lead?
Thanks,
Dave

 

 

Thanks for the link. Apparently from doing some research it would appear that the frame rails are narrowwer on a Supreme than a regular Cutlass. If that's the case, I'll have to make some modifications, which I don't wanna do. Help!

Dave😀

 

No they aren't, its misinformation that's been on there for decades. The frames are the same. I've never heard of those headers, I would recommend Heddman or Hooker for tried and true long tubes.

 

Whew! That's a relief😀

I'm new to the world of buying headers and I understand tube length and the like. What I need help with is deciding tube diameter and what is going to give me the best performance advantage. I have a Holley 670 Street Avenger and I know the engine has been worked, but what's been done I don't know. Or do I just "pick one" and hope for the best?

 

You will not have any choice in tube length. 1 7/8" should work. You'll get the benefits. I preferred Hookers "back in the day". There may be other good brands. Don't over think this.
..........Just my two cents worth

 

Lol... don't wanna overthink it...just don't wanna go too cheap😀

 

I know a guy that has been running those Black Horse headers on his 455 powered street Cutlass for a couple years now and he is very happy with the product and price.

 

If you purchase these, please let us know how they fit. They "claim" they'll fit 1965-1974 Delta also. From my experience, no aftermarket headers will fit a 1965/1970 Delta without major "surgery." A-body/Cutlass should be perfected perfectly after all these decades, one would think. Jmo.

 

I doubt they fit 65-67 Abody with an SBO

 

I haven't seen small block headers for a 1966/67 in a "few" decades.

these are suppose to fit the BB 1966/67. I'm considering getting a set.

https://www.hotrod.com/articles/1967...tlass-headers/

 

They look exactly like the eBay headers I have on my 65 Cutlass / 330. You have to make them fit - I wrote a review three years ago:

https://classicoldsmobile.com/forums...ss-review.html

 

https://classicoldsmobile.com/forums...5-headers.html

I bought them used just for the dyno pulls so my Hooker headers would not get discolored.