Originally Posted by Rusty

Had the '70's, Big Block 454 LS7 Rated HP was 465HP. It was more likely over 500HP. Big block Pontiac motors don't like to rev over 5,000 rpm's very long. So I switched to the big block cheby. Local dealer had ordered the motor for a guy. And the guy died before he could pick it up. So I got a deal on it because the dealer couldn't send it back and it was sitting collecting dust.