Thread: turbo 350 or 250

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How can you tell the difference? They have the same pan.

This might help.

Originally posted by dweezil
How can you tell the difference? They have the same pan.

as far as i know a 350 pan only fits a 350. not sure what the 250 is.

I think he means 200. Also, doesnt some of the t-350s have the number on the top of the bellhousing?

Originally posted by drg84
I think he means 200. Also, doesnt some of the t-350s have the number on the top of the bellhousing?

dont know about the numbers, but the pans are not the same

Here's a pic of the pans. Rather than cut and past just the GM stuff, I choose to just post the entire pic.

I never heard of a 250 before, but a transmission rebuilding catalog I have at home (I'm at work now, don't tell anyone) shows that 13 bolt pan as a 350 or 250. It is in a 82 malibu with a 229 v6. What is the difference between a 350 and a 350c? Car will probably get a bbc and t400, but I'm curious about the existing trans.

Originally posted by dweezil
I never heard of a 250 before, but a transmission rebuilding catalog I have at home (I'm at work now, don't tell anyone) shows that 13 bolt pan as a 350 or 250. It is in a 82 malibu with a 229 v6. What is the difference between a 350 and a 350c? Car will probably get a bbc and t400, but I'm curious about the existing trans.

ive been to the g.m. schools for the 350 and 400 but havent seen a 250, but the 350 had a felt filter for a while and they would stop up to quick, so they changed to a paper one. i think thats where the 350/c comes in.

GM did make a 250 Trans, They used them in the Vega and other small cars. They are a cheap 350 trans. Less clutches and no second gear servo showing on the outside of the trans.

Originally posted by Roden4fun
GM did make a 250 Trans, They used them in the Vega and other small cars. They are a cheap 350 trans. Less clutches and no second gear servo showing on the outside of the trans.

what yr vega? i think youer thinking about the powerglide.

Ive never heard of a t-250 either. Are you sure you dont mean a t-200? These trannies are commonly found behind very small block GMs and V6's in the early 80s.

Originally posted by Roden4fun
GM did make a 250 Trans, They used them in the Vega and other small cars. They are a cheap 350 trans. Less clutches and no second gear servo showing on the outside of the trans.

I too have seen a TH-250 and it's just a stripped down TH-350 as Roden4fun said.

Jerry D...

So..........as the original questions goes, How do you tell the difference between a th350 and a th250? From the exterior they obviously appear identical?

This might help:
http://lib1.store.vip.sc5.yahoo.com/...IDComplete.pdf

A TH-250 Has a band instead of a clutchpack for 2nd gear. If you had a 250 and a 350 sitting next to each other you would be able to tell the difference.
Jerry...