TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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whats the best?

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Old 07-13-2003, 10:06 PM
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Car: 91z28 and 88 SC thats for sale,in the sig
Engine: 305 TPI soon 383 stroker or 327
Transmission: t-5
whats the best?

what does everyone recomend for some headers for a 91z28....its mostly stock but will be gettin ignition components and a 6 spd instead of the 5 and eventually ported heads and intake.,so what do u guys thinks best for a 305 tpi header wise?
Old 07-13-2003, 10:27 PM
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Car: 1990 Iroc-Z
Engine: L98
Transmission: 700R4
Most anything will do since it is a 305. Hooker, Dynomax (cheap!), Edelbrock... just go with shorties 1 & 5/8 whatever you decide to get. FYI, GMHTP mag is doing a "frugal formula" series, with a 305 TPI Formula, and they show very nice gains with just the Dynomax catback and headers. Cheap *** stuff too!
Old 07-13-2003, 10:39 PM
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Car: 91z28 and 88 SC thats for sale,in the sig
Engine: 305 TPI soon 383 stroker or 327
Transmission: t-5
well after the heads get ported i will most likeyl throw in a 383 stroker,their some headrs i can get for the 305 that will work well with the 383 also? oh and the car has a catback system on it right now anyways.
Old 07-13-2003, 11:58 PM
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Car: Check The Sig
if the 383 is gunna be pushin out power, then look to get shortie 1 3/4's to save you ground clearance and also give you big primaries... SLP is the only one i know that makes 1 3/4 shorties... maybe hooker too.. i forget. Anyway, emmissions... are they needed? if not look for headers w/o the AIR injection tubes. SLP is very $$$ and when coated....$$$$$$$$... and for the money you spend, there is very poor customer support, and i have seen many bad fits with thoes big headers in the cramped bay. Nice car man... good luck.




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