How about a show of hands about this ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GOPAPA · 10-16-2008, 05:21 PM

This involves a short story to fill you in on why I ask this question .. It's A little late to change things but want to know what you all think of my set up with Motor & Tranny .

I bought My truck (1972) with the Motor and Transmission in it ,,and both are fresh rebuilds and the tranny is supposed to be "breafed up" while doing so.

I have a 396 -1972 Chevelle engine ( bored out the .30 to make it a 402.. about 360 horse I was told .. and the tranny is a 350 th .

My question :: Is this tranny going to be tought enough with this motor ?

I know this ,,It would of been a lot simpler if it had a 400th in it to bolt the mounts down., and hook up the passing gear shifter..

A little late to cry about it and hope I am not going to regret it papa

**1970 CST Short Wide** · 10-16-2008, 05:42 PM

I'm running a 454 with solid lifter cam and all the goodies (~400ish HP). A 350 trans plus a Detroit Locker rear. I'm hard on it and it’s held up fine for the last 2 years. I did have the tranny built with that in mind though

big_al_71 · 10-16-2008, 05:43 PM

Use the TH350 till it blows if it ever....That is what I did...

Longhorn Man · 10-16-2008, 05:45 PM

if the tranny was built to hold up to the engine, then you'll be fine.
If it wasn't built for the power, you'll find out later.

10-16-2008, 05:21 PM	#1
GOPAPA Senior Member Join Date: Oct 2007 Location: Nampa Idaho Posts: 7,551	How about a show of hands about this ? This involves a short story to fill you in on why I ask this question .. It's A little late to change things but want to know what you all think of my set up with Motor & Tranny . I bought My truck (1972) with the Motor and Transmission in it ,,and both are fresh rebuilds and the tranny is supposed to be "breafed up" while doing so. I have a 396 -1972 Chevelle engine ( bored out the .30 to make it a 402.. about 360 horse I was told .. and the tranny is a 350 th . My question :: Is this tranny going to be tought enough with this motor ? I know this ,,It would of been a lot simpler if it had a 400th in it to bolt the mounts down., and hook up the passing gear shifter.. A little late to cry about it and hope I am not going to regret it papa Last edited by GOPAPA; 10-16-2008 at 05:21 PM.

10-16-2008, 05:42 PM	#2
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,165	Re: How about a show of hands about this ? I'm running a 454 with solid lifter cam and all the goodies (~400ish HP). A 350 trans plus a Detroit Locker rear. I'm hard on it and it’s held up fine for the last 2 years. I did have the tranny built with that in mind though __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565

10-16-2008, 05:43 PM	#3
big_al_71 Registered User Join Date: Jun 2008 Location: South Florida Posts: 11,375	Re: How about a show of hands about this ? Use the TH350 till it blows if it ever....That is what I did... __________________ Get your facts first, and then you can distort them as much as you please!!!!!. Sylvester's build thread >>>http://67-72chevytrucks.com/vboard/s...ht=big+rebuild

10-16-2008, 05:45 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: How about a show of hands about this ? if the tranny was built to hold up to the engine, then you'll be fine. If it wasn't built for the power, you'll find out later.



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