I am hopefully going to be looking at some 87-9? 2500-3500 SRW automatic trucks in the near future (1-2weeks) I need to get an automatic so the :girly: can drive it also. I would like to get a TH400 but am not sure exactly what they came in. Any OD trannies out their that are just as strong in this time frame...and no i don't want a 700R4. Hopeing to get a TBI 350 wtih TH400 in either 2wd or 4wd(don't care either way)

What should i look for with an automatic tranny to tell the condition? Tranny fluid to make sure it isn't burnt/smells burnt...solid shifts in all gears...??

How can you tell a TH400 from a Th350 from a 700R4(pretty sure this one is longer)?

Anything else i should look at in general? coolant leakage/smell on startup..ect ect.

Stew

The heavy 2500 & 3500 trucks of that vintage should all have TH400's or manual trannies.


TEX

TH400 tranny pan will look like the state of Texas. I believe the TH350 is a rectangular in shape.

I am hopefully going to be looking at some 87-9? 2500-3500 SRW automatic trucks in the near future (1-2weeks) I need to get an automatic so the :girly: can drive it also. I would like to get a TH400 but am not sure exactly what they came in. Any OD trannies out their that are just as strong in this time frame...and no i don't want a 700R4. Hopeing to get a TBI 350 wtih TH400 in either 2wd or 4wd(don't care either way)

What should i look for with an automatic tranny to tell the condition? Tranny fluid to make sure it isn't burnt/smells burnt...solid shifts in all gears...??

How can you tell a TH400 from a Th350 from a 700R4(pretty sure this one is longer)?

Anything else i should look at in general? coolant leakage/smell on startup..ect ect.

Stew



TH400 http://www.novak-adapt.com/knowledge/th400.htm

TH350 http://www.novak-adapt.com/knowledge/th350.htm

700R4 http://www.novak-adapt.com/knowledge/th700r4.htm

That should narrow it down some for you.

Good info thanks a bunch!

Stew

If you get into a '9? something it may have a 4L80E, the OD version of a T400.

'91-onward has a 4L80E in place of a TH400.

Also, if your teeth rattle when it shifts... QUIT DRIVING IT! That's the 'limp mode'. Usually its a computer failure, and you can remedy the situation before the trans self-destructs.