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SteveH
Guest
I own a stock 81, recently switched to a 355 rear end. I hit approx 3,000 RPM at 70 MPH. The mechanic who installed it told me he had an 81 that he put a 373 rear end in and drove it on the express way for hours on end without a problem I am interested in comments on running the car at that RPM for anything more than an hour. Will the stock 350 handle that RPM for an extended period of time?