Transmission Swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

TXAGGIES · 11-04-2016, 03:42 PM

I have a 1970 C10 Short Wide. It has a (1994) 350 with Turbo 400 auto transmission with manual valve body. I'm not a big fan of having manual shifting and was curious what auto transmission you guys would suggest to swap to or would you just suggest rebuilding the one I currently have?

I drive about 10 miles on highway to work every day.

**Boog** · 11-04-2016, 04:15 PM

A good many guys will say swap to an overdrive trans for fuel savings but i say if you have a t400 its hard to beat. It's the toughest auto trans gm ever built. I'd get rid of the manual valve body and do a proper rebuild on it and enjoy the simplicity and strength of that T400.

snailhouse_projects · 11-04-2016, 04:18 PM

I just recently swapped a TH350c into mine, when I bought it, it had a 2speed PG and I hated that thing, it had to rev too high to get into second and rpms were too high. when I dove the truck with the TH350c it was like driving a whole new peppy machine.... I also drive about 10-11 miles on the high way to work everyday and I have no complaints with the 3 speed, now if my pocket book would let me (and my wife) I would go with a 700r4 but need to buy a few more scratch offs for those hopes....

**Boog** · 11-04-2016, 04:25 PM

double

11-04-2016, 03:42 PM	#1
TXAGGIES Registered User Join Date: Jul 2012 Location: Hickory Creek, TX Posts: 6	Transmission Swap I have a 1970 C10 Short Wide. It has a (1994) 350 with Turbo 400 auto transmission with manual valve body. I'm not a big fan of having manual shifting and was curious what auto transmission you guys would suggest to swap to or would you just suggest rebuilding the one I currently have? I drive about 10 miles on highway to work every day.

11-04-2016, 04:15 PM	#2
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,535	Re: Transmission Swap A good many guys will say swap to an overdrive trans for fuel savings but i say if you have a t400 its hard to beat. It's the toughest auto trans gm ever built. I'd get rid of the manual valve body and do a proper rebuild on it and enjoy the simplicity and strength of that T400. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

11-04-2016, 04:18 PM	#3
snailhouse_projects Registered User Join Date: Jan 2014 Location: New Mexico/ Faaaar west Texas Posts: 27	Re: Transmission Swap I just recently swapped a TH350c into mine, when I bought it, it had a 2speed PG and I hated that thing, it had to rev too high to get into second and rpms were too high. when I dove the truck with the TH350c it was like driving a whole new peppy machine.... I also drive about 10-11 miles on the high way to work everyday and I have no complaints with the 3 speed, now if my pocket book would let me (and my wife) I would go with a 700r4 but need to buy a few more scratch offs for those hopes.... __________________ 69' GMC LongBed- 350/4 speed "GeeMack" 72' C10 Longbed- 355/400 combo cut front springs and bagged rear on 18x10 GSI Drop member front and rear coming soon 00' Tacoma- Solid axle twin cases, 5.13's, ARBs on 37s 08' Roadking, 99' Softail, 81' FLH, 76' Superglide

11-04-2016, 04:25 PM	#4
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,535	Re: Transmission Swap double __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross



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