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#1
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Round Port Headers for 1967-69 Firebird
Friend of mine is building an engine for another friend. It is a 1971 455 HO. It is going into a 1967 Firebird with an automatic trans. When the owner and his neighbor removed the engine, they cut the tubes on the headers. He is going to need a new set. I was looking around and see that there are not many options. What is everyone doing in regard to headers? The 455 HO was installed many years ago and the headers were put on then. My friend is about a month out from finishing the engine and going to the dyno. The dyno facility has Pontiac headers but not round port ones. He is going to put headers on the car again. What are some options from anyone who has done this?
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#2
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Mad Dog. Call and get mark's cell number. he builds the pontiac headers out of his garage.
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#3
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I'd said depends on the power level. Under 500hp or so and absolutely no need for headers.
And with the funky 1st gen steering box in the way, headers kiss the box and plain s*ck in that regard on these cars. I have Doug's with 3.5" collectors and live with it. Fine with them otherwise. |
#4
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Doug’s hands down!
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468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
#5
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Quote:
Quote:
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#6
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Yup, 1000 bucks worth of Doug’s headers is the way to go.
For the dyno session with a 455 he needs 19” long collector extensions.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#7
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Gearbanger on here in the for sale section has or had a pair of new Doug's 568 headers for sale. That's lots of header for what your doing.
https://forums.maxperformanceinc.com...d.php?t=864094
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68 Firebird. IA2 block, 505 cu in, SD Performance E-head, Solid roller 3600 weight. Reid TH400 4:11 gear. 29" slick. Best so far 9.95@134 mph. 1.43 60 ft. 76 Trans am, TKX .81 o/d, 3.73 Moser rearend, 468 with KRE D-ports, Doug headers, 3" Exh. |
#8
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I have dougs on my 67s with round ports.
They fit mostly fine. Its tight on the steering gear side but they fit.
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1967 Firebird 462 580hp/590ftlbs 1962 Pontiac Catalina Safari Swapped in Turd of an Olds 455 Owner/Creator Catfish Motorsports https://www.youtube.com/@CatfishMotorsports |
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