01fastz28

Hey guys...

If you havent seen my motor post!! Im building a motor that is goingn to hold around 20+ psi in a 1983 silverado.

The motor is a sbc 350...

Now.. Im going to need to build the trans to hold the power...

I have never dealt with an older transmission!!

I am used to the 4l60e...

What is a good build sheet that I would need to get to build i t right!!

Thanks

Badzracing

iTrader: (12)

In my personal experience, the only way a 700r4 will hold up to any real power is to make it reverse manual valvebody.

I have a 700r4 ( rmvb) in my 99 silverado ( procharged @ 15lbs boost). Retaining the fully automatic features, it would start slipping about 2000-2500 miles. Now that it's RM, I haven't had a problem yet ( around 10k on it and 20 track passes....12.10-12.40 neighborhood). I have alto reds for 1st and 2nd and the Z-Pak for 3/4. Everything else is the standard for 4l60/e's: sunshell, hardened input ( and output if you can find one), hardened reaction carrier shell, 5-pinion planetaries, hardened ( 300m) band pin, NO thrust washers ( all torrington bearings), billet servos for 2nd and 4th, etc.

cbrich

What are your intentions for this truck? Street/Drag and don't care about economy, or do you want an economy car.

01fastz28

Economy does not matter!!!!!

01fastz28

if you dont think the 700-r4 is a good choice, then what about another transmissions!! like a turbo 400...

nightrunner

iTrader: (4)

exactly, a built 400 turbo will handle anything... the 700r4 is the weakest pre-4l60e transmission you can get

cbrich

A built 400 is the way to go, and you also have more part choices with the 400.

zippy

What kind of power level are you looking for?

James B.

iTrader: (1)

TH400's are also very easy to rebuild. You can do it with normal tools and a set of feeler guages.
I rebuilt the one in our Demolition Derby '79 Cadillac here at work. It was easy as I've abused the hell out of it since.