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The 71 455 is a mere 335 which puts it in the category of the garden variety high compression 400. Even a 69 350 HO is rated at 330 HP. [/ QUOTE ] But Steve, in '71 GM (and others) went to net HP and all HP ratings were quoted very conservatively in order to keep the Feds off their backs. I JUST read - in a recent issue of one of the 2 Poncho mags - that the '71 455HO was the all-time most powerful Pontiac engine and many feel it is the most desirable. Don't make me go looking for the article!! ![]() Mac (My signature, below, is email from an eBay scammer who tried to sell me a bogus Camaro from London with "free shipping." I sent him a fake Western union transfer receipt and complained to no end when he didn't ship the car! ) ![]() ![]()
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