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Old 06-25-2010, 08:38 PM
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manifolds or headers

to start i got a 1975 firebird with the pontiac 400 4 speed.what is better for mild street manifolds or headers.the manifolds i got not in the best of shap so i try'd some 3 tube headers for an auto but wasnt thinkin when i got them needles to say the didnt fit the 4 speed car

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Old 06-25-2010, 09:06 PM
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headers = performance manifolds are restrictive if you have the mobey definately get some headers
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Old 06-25-2010, 09:13 PM
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Quote:
Originally Posted by 87fubar
to start i got a 1975 firebird with the pontiac 400 4 speed.what is better for mild street manifolds or headers.the manifolds i got not in the best of shap so i try'd some 3 tube headers for an auto but wasnt thinkin when i got them needles to say the didnt fit the 4 speed car
I dont really understand your question but headers are always better for performance over stock manifolds. Id go to summit racing and type in your car, engine, and all the other specs and it will spit out the type of header you need and maybe even have a pair for a good price. Either way you'll know what size to look for that will fit your application. But yes go with headers
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Old 06-25-2010, 10:22 PM
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just checked with summit they got 2 sets of there headers 1 is $119 the othere $185 they bolth looked the same
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Old 06-25-2010, 10:56 PM
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Quote:
Originally Posted by 87fubar
just checked with summit they got 2 sets of there headers 1 is $119 the othere $185 they bolth looked the same
Most long tube headers has the same design and flow the same. Only differnece in headers is size in which 1 5/8 would do you well. Go with what you can afford
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Old 06-26-2010, 12:37 AM
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how long do headers normaly last till they need replacing
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Old 06-26-2010, 12:44 AM
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I never heard of headers having to be replaced. Just the header gaskets every now and then and the collector gasket if there not welded together.
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Old 06-26-2010, 02:43 PM
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I never heard of headers having to be replaced.
Living in the "Bible Belt" probably not but up here in the "Rust Belt" if you have headers on a daily driver you will.
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Old 06-27-2010, 05:15 PM
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Donno about that... I grew up in buffalo and always heard the same, but I've never had a set fall appart... surface rust to the point that they're ugly and there is nothing you can do about it sure, but never any holes... Had a set of uncoated Headman headers on a TA for 11 or 12 years...
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Old 06-28-2010, 09:26 PM
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Ever seen the repro iron "factory headers" made by Ram Air Restorations? They ain't cheap, but they should last a lifetime and won't cause ground clearance issues. Part # RM-2 fits Gen-2 F-bodies.

www.ramairrestoration.com/catalog (might want to turn the sound down before you click)
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