Re: 1972 gmc jimmy BBC header ?
I installed some headman elite ceramic coated shorty headers on my 71 2wd blazer w/454 400TH. I had to use a hammer on one tube on the passenger side header to clear the frame rail. I tried Sandersons but I could not get it in, thankfully they were any easy resell. Most of the good headers for this application are from 400-600. From what I remember headman's website was pretty helpful. Try looking at truck and or suburban w/ bbc applications. I don't rember exactly what part # I got. I do have the cast manifolds left from mine if you decide to go that route ($30.00).
Good luck,
Mike
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