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69GMC910 · 09-08-2011, 08:38 PM

Funny title hey!!! lol!

My current setup is an 82 LWB with a sbc, TH350C, and a 10 bolt diff. The new engine is a BBC making 700hp. There is another post about rear end choice already, and I'm pretty sure I'm going to get a Moser 9". Now, I need a transmission that will handle the power as well. My TH350C has a 9" tailshaft, and I want to swap to a TH400. I called about a TCI and they offered me either a 4" or 9" tailshaft. Other than length, what's the difference?? Probably better to have a shorter driveshaft anyways??

Other than TCI, what would you recommend? I priced locally for a ground up build 400 and it was $2k more than the TCI I was looking at...

I can NOT spend more than $2000 on the transmission!!! I'm getting a 10" 3000rpm converter made for it so I don't need one of those...

Please help!!!

09-08-2011, 08:38 PM	#1
69GMC910 MOTORHEAD! Join Date: May 2000 Location: Devon AB, Canada Posts: 849	I need a tranny!!! Funny title hey!!! lol! My current setup is an 82 LWB with a sbc, TH350C, and a 10 bolt diff. The new engine is a BBC making 700hp. There is another post about rear end choice already, and I'm pretty sure I'm going to get a Moser 9". Now, I need a transmission that will handle the power as well. My TH350C has a 9" tailshaft, and I want to swap to a TH400. I called about a TCI and they offered me either a 4" or 9" tailshaft. Other than length, what's the difference?? Probably better to have a shorter driveshaft anyways?? Other than TCI, what would you recommend? I priced locally for a ground up build 400 and it was $2k more than the TCI I was looking at... I can NOT spend more than $2000 on the transmission!!! I'm getting a 10" 3000rpm converter made for it so I don't need one of those... Please help!!! __________________ 82 GMC High Sierra VortecPro 496 12 Bolt, 3.42's AFR 265 Holley 850 Performer RPM Air Gap Hooker 2455's TCI Turbo 400 Super Street Fighter TRRC 12 Bolt Eaton Posi/3.42 Mark Williams Axles Cal-Tracs Hoosier 30x10.5 Radial Slick Ryan Brown Performance 850 Holley Full weight long box pickup Current best- 11.28@119mph Last edited by 69GMC910; 09-08-2011 at 09:06 PM.