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Engine Swap Everything about swapping an engine into your Third Gen.....be it V6, V8, LTX/LSX, crate engine, etc. Pictures, questions, answers, and work logs.

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Old 10-03-2009, 10:49 AM   #1
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84 z28 355-Long Tubes
I am putting a 355 in my 84 z28.Im trying to find out if anyone knows what longs tube headers will fit in the car without any problems. Thank you
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Old 10-03-2009, 01:53 PM   #2
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Car: '84 Trans Am WS6
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Re: 84 z28 355-Long Tubes
There are only 2 choices, and both of them create problems. GM specifically designed that tapered "frame" under there just to prevent headers. EPA stuff. Anyway, Hooker makes a set of 1.75"-primaries, but if you're under 400 HP, use Hedman's 1.625"-primaries.
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Old 10-03-2009, 11:39 PM   #3
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Flowtech also makes a set, but they're 1-1/2" primaries and from most reports, not very good quality (the Summit store brand headers are Flowtechs).

The Hedmans are a good choice.
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Old 10-07-2009, 03:42 PM   #4
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Re: 84 z28 355-Long Tubes
I have hedman long tubes on mine PN# 68468. They were a decent fit.
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Old 10-07-2009, 03:42 PM
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