90mm Throttle Body Too big?
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Joined: Nov 2002
Posts: 889
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From: Kansas City
Car: 1991 Trans Am
Engine: L98
Transmission: T56
90mm Throttle Body Too big?
I just got my new 90mm throttle body in the mail the other day and I was wondering what it was going to do performance wise to my car. Now let me say that I know its not going to pick up crazy power or anything stupid like that. I actually bought it because the new intake I am going to use requires it. As soon as a few parts sell I will be purchasing a pair of Dart Pro 1 heads and more than likely an XFI280 cam kit for the stock bottom end.
Will the 90mm tb hurt performance at all? If it stays the same then I am fine with that, I just don't want a major loss for some reason.
Will the 90mm tb hurt performance at all? If it stays the same then I am fine with that, I just don't want a major loss for some reason.
Joined: Jul 1999
Posts: 10,950
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: 90mm Throttle Body Too big?
What intake are you using?? The Ram Jet? Every TPI intake I know about uses a stock twin 48mm, and the upgrades are twin 52mm and twin 58mm. LS1's can use 90mm and the Ram Jet does too.
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