Thread: 400 into a 700r4

Tweet

If your dads truck is 88 it had 700R4. They were started in 1982. 82 to 88 were the weaker 700R4's. 1989 and up to the 4l60 were the stronger trannies. If you got 200K on a 700R4 that is very good. Rebuild yours or swap to 400 Turbo. They are the most bullet proof tranny. Turbo 350's are next inline. 400 and 350 turbos will bolt up. Have to change up converter. Turbo 350C's have lock up converter for a little extra on the hiway. This is wat i run in my street rod. Any Chevy 700R4 will bolt up. Just remember any of the older ones are only good for around 100,000 miles. So watch what you get from the wrcking yard.

just curious about how strong a torque converter from my 700r4 is? when the tranny went out, it seemed like it was bogging down like and it took forever for it to get to speed. the engine would also rev really high before it shifted, and when it shifted it cricked your neck. should i also invest in a TC?

once a while back i had the car on a lift when i changed all of the fluids, and when i took the cover off to look at it i couldnt put my hand on it and count to two. is that normal?