97 Pontiac Trans Am

Asked by Poncho_purist Mar 12, 2019 at 07:09 PM about the 1976 Pontiac Firebird Formula

Question type: Car Customization

I would like to install a 76
Pontiac 400 instead of the
5.7. How difficult and costly
would it be ? Has the
6speed manual trans.

1 Answer


Very! Many issues with wiring, sensors, anti-smog components, computer, etc. Using an older block like this may sound like fun but you will probably regret it. It may be easier (and possibly cheaper) to add a turbo or supercharger to your 5.7.

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