73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Curt80 on June 18, 2020, 12:03:49 PM
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Hello all,
I'm overhauling my 1980 1/2 ton 2wd Shortbox. Building a new powerplant, wondering if my motor mounts will hold or if it's the time for a stronger setup.
I currently have the stock mount setup upgraded with poly clamshell inserts. Does anyone have a rough idea of what a stock setup like this will hold? Old motor was 400 hp / 400 ft.lbs with no issues so far, the new motor is in the 500 hp / 550 ft.lbs range. The truck has a strong driveline and does hook up decent so it's not just a tire spinner.
I can't seem to find a pre-fabed kit for a 73-87 so any knowledge of one, or real world failures (and their ballpark tq.) is appreciated.
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While not a drag racer, I can only comment on what I haven't heard of is motor mount failures. The design of it is so much better than the 67-72 which did have failures. I've had well over 100 of these and been in the hobby for 25+years. Never heard of an issue
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That's a good way of looking at it, thanks