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305TPI-T5 to 350HO-?

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Old Apr 22, 2004 | 01:20 AM
  #1  
formulafan's Avatar
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From: Sotheast, MI
305TPI-T5 to 350HO-?

I would like to swap my 91Z28 305TPI T5 to a 350 HO motor with a manual tranny. My questions are:

1) What would I need besides the Scoggin-Dickey vortec baseplate to bolt the TPI unit back on? Will TPI provide enough air to the motor?

2) Should I switch to a T56 or a Tremec TKO for a street driven car? Is one easier and more cost effective?
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Old Apr 22, 2004 | 08:13 AM
  #2  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
If you want a crate engine with Vortec heads and TPI, don't bother with the HO engine. The power will be down quite a bit vs. a carb'd HO.

Go with this engine http://www.sdpc2000.com/cart.asp?act...=1577&pid=9009 . It comes with the base and the engine internals to get the power. See the bottom of their write-up to see what else it takes to get there.

The T-5 won't stand up to the power with anything approaching abuse for very long. Either tranny you mentioned will be a big improvement. The next weak spot will be the rear.
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