Is the th400-700r4 worth it? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Sawlog · 10-07-2018, 01:42 PM

I have a 1969 c10 that I'm building a new 355 for. I have a th400 tranny in it with 3.07 rear gear.
My neighbor has a 1990 1500 2wd with a 350 tbi and jasper rebuild 700r4 in it.
The truck has 187000 miles on it and he wants to sell it to me for 400 bucks.
I ran the numbers on the tranny and it has 1990 date code on it.
So I'm thinking if I can get a overdrive tranny then I can also lower my rear gear. I do a lot of interstate driving so my 3.07s do me well with my th400 now. Would like to go to 3.73.
I don't know if I could use the drive start out of the 1990 or not, that th8ng is as big around as a coffee can!!
What do you all think?

10-07-2018, 01:42 PM	#1
Sawlog Registered User Join Date: Jun 2017 Location: Central illinois Posts: 143	Is the th400-700r4 worth it? I have a 1969 c10 that I'm building a new 355 for. I have a th400 tranny in it with 3.07 rear gear. My neighbor has a 1990 1500 2wd with a 350 tbi and jasper rebuild 700r4 in it. The truck has 187000 miles on it and he wants to sell it to me for 400 bucks. I ran the numbers on the tranny and it has 1990 date code on it. So I'm thinking if I can get a overdrive tranny then I can also lower my rear gear. I do a lot of interstate driving so my 3.07s do me well with my th400 now. Would like to go to 3.73. I don't know if I could use the drive start out of the 1990 or not, that th8ng is as big around as a coffee can!! What do you all think?



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.