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Old 06-23-2006, 11:30 PM
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chevy tbi heads

i have a 91 chevy truck tbi 350 what would be better a set of vortec heads ? double humps?our power pack? and also will the power pack our double hump heads work with that motor/tbi intake?

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Old 06-24-2006, 05:14 AM
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Originally Posted by zeus75126
i have a 91 chevy truck tbi 350 what would be better a set of vortec heads ? double humps?our power pack? and also will the power pack our double hump heads work with that motor/tbi intake?
Forget Double Hump or Power Pak heads and they will not work with your intake without modifying the center bolt holes. If you want low end torque and fuel economy under 4,000 keep the TBI heads if you want more performance through 5,500 my vote is for Vortecs but again your intake won't work with them. Otherwise look at a set of '87-'92 L-98 TPI heads or some aftermnarket heads.

FYI the TBI heads have 64cc chambers and 1.94/1.50 vlaves, also with some port work the breathing can be improved up through 5,000. I wouldn't go out and buy a set but if you already have a pair and are on a budget there are worse heads.
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Old 06-24-2006, 12:14 PM
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i am just trying to get more power this truck is a real dog i would just like some more pep
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Old 06-24-2006, 07:37 PM
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Originally Posted by zeus75126
i am just trying to get more power this truck is a real dog i would just like some more pep
You need to go here.............

Fullsize Chevys.com

You may have to seperate the wheat from the chaff a little like any other forum but there are some sharp people there when it comes to late model Chevy trucks with EFI.
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