The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Safe maximum HP and Torque for Drivetrain

Overdriven · 01-19-2019, 02:02 AM

A few years back I picked up a th350 for a project and went to have it rebuilt locally. Since the trans was in the back of my pickup they started asking questions. Realizing this was my weekend toy/stress reliever and 350hp goal they recommended some upgraded clutches and such, and some valvebody tweaks to go along with the basic rebuild. I think it added less than $50 to the bill for the upgrades. Far from a “built” trans, but just enough upgrades and tweaks to handle the extra power and abuse of being a weekend toy/stress reliever.

I’ve seen enough anecdotal evidence on this site to suggest your rear axle will be fine. Unless there’s something wrong with it and/ or you’re going to bolt on slicks and take it to the dragstrip every weekend.

01-19-2019, 02:02 AM	#8
Overdriven Registered User Join Date: Mar 2016 Location: Long Island NY Posts: 598	Re: Safe maximum HP and Torque for Drivetrain A few years back I picked up a th350 for a project and went to have it rebuilt locally. Since the trans was in the back of my pickup they started asking questions. Realizing this was my weekend toy/stress reliever and 350hp goal they recommended some upgraded clutches and such, and some valvebody tweaks to go along with the basic rebuild. I think it added less than $50 to the bill for the upgrades. Far from a “built” trans, but just enough upgrades and tweaks to handle the extra power and abuse of being a weekend toy/stress reliever. I’ve seen enough anecdotal evidence on this site to suggest your rear axle will be fine. Unless there’s something wrong with it and/ or you’re going to bolt on slicks and take it to the dragstrip every weekend.