The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - TH-350 to TH-400, different trans mount?

'70 C/10 SS500 · 08-28-2003, 03:20 PM

(I know this is in drivetrain, but need some replies fast!)

I'm in the process of installing my Caddy 500/TH-400 into my previously 292 I6/TH-350 '70 C/10. The trans mount from the caddy cross member doesn't look like it'll work with my truck cross member. For reference, the motor/ trans. came out of a '76 Coupe Deville. The tranny is a long tail shaft BOP TH-400.

Questions:
1. Is there any difference between tranny mounts for a 350 vs. a 400?
2. Can I just unbolt my 350 mount, put it on the 400, and relocate the crossmember?
3. What tranny mount do I need to use?

08-28-2003, 03:20 PM	#1
'70 C/10 SS500 Registered User Join Date: Jun 2003 Location: Chandler, AZ Posts: 130	TH-350 to TH-400, different trans mount? (I know this is in drivetrain, but need some replies fast!) I'm in the process of installing my Caddy 500/TH-400 into my previously 292 I6/TH-350 '70 C/10. The trans mount from the caddy cross member doesn't look like it'll work with my truck cross member. For reference, the motor/ trans. came out of a '76 Coupe Deville. The tranny is a long tail shaft BOP TH-400. Questions: 1. Is there any difference between tranny mounts for a 350 vs. a 400? 2. Can I just unbolt my 350 mount, put it on the 400, and relocate the crossmember? 3. What tranny mount do I need to use?