Quote:
Originally Posted by Tom Pugh
what do think the numbers would be on the 455 built for the GTO if run through ram air exhaust vs headers?
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Hi Tom.
I would say down around 30 HP. And for the average guy driving it around you would never know the difference. Assuming an aftermarket RA exhaust casting with the big exit.
Just my guess. Of equal importance is the exhaust system behind the manifold or header.
We drive these things.