Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - 8.1L 496 vortec big block chevy, what is it?
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Old 08-01-2004, 09:54 PM
Miket Miket is offline
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I have one in my Suburban---345 hp and 460/470 lb-ft torque. They have distributorless ignition....so a manifold swap would be in order---I "thought" these were an all together different block than the newer mark 5 big blocks----could be wrong. With a good computer tweak and a cold air intake guys have seen 50-75 hp gain at the rear wheels on a dyno.
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