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#1
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Round port headers
Does any one make round port headers for 73-77 a-bodies? The only ones I can find are the Doug’s for 70-81 Firebirds. I know the front frame horn the 73-77 was patterned after the 70-81 f -body but I don’t know if they will work. I actually have a 75 Grand Prix but from what I’ve been told the frame is the same from the motor mount back.
Thanks, Jay J
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1975 Grand Prix 1959 F100 |
#2
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I was really hoping to find some, but I looked at Hooker, Hedman, OBX, Dougs, MadDog, Flowtech, Patriot, and then Tin Indian and KRE hoping to find some but it seems they don't exist. D ports yes. Round ports no.
Hedman makes the 35130-6 that Summit says will fit a 73 GTO, but the Hedman Website doesnt agree. https://www.summitracing.com/parts/hed-35130-6 That'll take a phone call to find out Hedman is probably correct. Jegs has P/N 555-30065...but while the description says "Cylinder Head Port Shape" is round, it goes further to say it will NOT fit Ram Air cylinder heads. Likely a D port. Now you can understand why I had mine made.
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. Mark S . Who needs nice and pretty, when you can have mean and nasty? KRE Aluminum headed 463CID 73 LeMans. Used to run 10.6x @ 124.55. 3700lbs . So much for 2020...shootin for 9s in 2021...and in 2022 apparently.....looks like 2023 as well. >>My 73 Build thread |
#3
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Yeah maybe in the future I will go that direction but guess I’ll be running RA manifolds for now.
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1975 Grand Prix 1959 F100 |
#4
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73LeMans is right, there isn't a company that makes ram air headers that will fit 73-77 a-bodies. I scoured tech lines and company products for months w/ no luck and i wasnt willing to try ram air headers for a 72 a-body or firebirds. Closet i found was Stainlessheaders.com that makes a build your own kit that I believe you can get in steel or stainless w/ up to. 2" primaries. I ended up going with Eddy Dport heads so I have never used that companies products & I can't verify the quality of their kit.
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1973 GTO, Len Williams 459CI shortblock, Eddy heads by John Gaydosh, ported Torker 1, SMI stage4 Qjet, TH400, GearVendor OD, 3.90 posi. |
#5
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A little late to the game but 2nd gen F body headers fit. I had Hedman hustlers on mine and they fit great. They won't fit if you're running a standard trans with mechanical linkage unless you extensively modify a tube. I have OBX on it now. They look better but don't fit as good.
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