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4.9 swap in a 88 Fiero
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Discussion Starter · #1 ·
I am swapping a 4.9 out of a 93 Deville to a 88 Pontiac Fiero, and I read somewhere in this forum, that a Throttle Body Spacer will help a little bit on performance, and, I also need to raise the Air Hat a little bit, so why not a TB spacer.

I can not find any specific TB spacer for the Cadillac 4.9.

To what can I compare the Cadillac TB ?

What GM TB base is the same as the 4.9 ?

My engine yet:

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