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Joined: Aug 2004
Posts: 120
Likes: 0
From: Abilene Tx.
Car: 01 mustang GT
Engine: 4.6
Transmission: tr3650
Axle/Gears: 3.73 Posi
Re: fully ported TPI base - siamesed runners
Sweet base.. Is it the offset center bolts or old style head pattern?.. Also what brand of runners did you use with it? Ported or standard?
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Re: fully ported TPI base - siamesed runners
I'm almost positive they are the offset bolt pattern of the '87 and up heads, but thats an easy fix for old style. I used stock corvette runners (i was told that they are a tad bit larger - but i don't know for sure) i have them as well.
Supreme Member

Joined: Jan 2003
Posts: 2,043
Likes: 3
From: San Diego
Car: 1994 Trans Am
Engine: LT1
Transmission: Auto
Axle/Gears: 3.23
Re: fully ported TPI base - siamesed runners in base
Im interested. Please find out for sure if they will fit the 87+ cars? I have an 89. Also shipping to 85225. Ill be back on TGO by sunday.
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