Racingjunk Forums - View Single Post - th350/400 engine rpm capability

03-20-2009, 03:34 AM

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Join Date: Feb 2009

Posts: 510

I have been rcaing with my th400 since 96 and have had it rebuilt only once. It's behind a 455 Pontiac. My brother has a 72 Nova with a 406 and he goes thru 3 th400 a year. They don't like HIGH rpm's. 6500 max on a th400.