GM B-Body Forum, 77-79 Caprice/Impala Forum

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GM B-Body Forum, 77-79 Caprice/Impala Forum

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GM B-Body Forum, 77-79 Caprice/Impala Forum

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GM B-Body Forum, 77-79 Caprice/Impala Forum

A forum for the owners and enthusiasts of General Motors B-Bodies from 1977-1990, but dedicated to the owners of 1977-1979 Impalas and Caprices. Join up now!


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    Headers for 77 2 Door impala

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    Feefifofum
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    Headers for 77 2 Door impala Empty Headers for 77 2 Door impala

    Post  Feefifofum Tue Dec 13, 2022 4:24 am

    Headers for 77 2 Door impala 20210410
    Hey fellas new to the forum and eager to soak in information on these cars. I'm building a 77 2 door impala landau. And I picked up a 350 motor that's built mildly to replace the original worn out 350. I've searched everywhere and can't find an easy solution for headers that fit correctly and aren't breaking the bank. And that are the correct port shape, which is square
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    Headers for 77 2 Door impala Empty Re: Headers for 77 2 Door impala

    Post  GM B-Body Forum Wed Dec 14, 2022 4:38 pm

    Hello there, and welcome to the forum! You have a few options when it comes to headers. The square port doesn't matter as all sbc have square exhaust ports and you can use round tube headers on them. What I've discovered is headers that have primaries larger than 1-5/8" are typically square. 1-5/8" and smaller primaries are usually round. I have Hooker headers 409 stainless steel 1-3/4" long tube headers and they are square port. The part number is 2551-2HKR. They fit our cars but need just a little massaging on i think 2 tubes if i remember correctly. Before that I ran flowtech headers part number 11100FLT (31100FLT is the ceramic coated version) and those had round 1-5/8" primaries and I liked them better actually, only 1 tube needed massaging and changing plugs was easier vs the bigger headers I have now. The hooker headers I have now are less than $300 for the pair, it is 409SS so its not the best but they are a good set of headers.

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    Post  Feefifofum Wed Dec 14, 2022 4:44 pm

    Okay perfect thank you for the help sir!

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