Pontiac 400 Trans to 203,208 Case

[Bigg Jerry]

I have a rebuild Pontiac 350 big block with a pontiac turbo 400 trans. Will this trANSMISSION BOLT TO A 203 FROM A 77 OR A 208 FROM A 88 ?

 

[blazinzuk]

the pontiac trans will be a 2wd trans so no it will not bolt up to any of the t-cases you listed.

You will need to swap the 2 wd output shaft for a 4 wheel drive one, most shops around here will do it for about a hundred bucks. after that I am not sure if there are different stickout lengths for between the 203 shaft and the 208 shaft (speaking of the 4wd output shaft)

Either t-case will need the 32 spline input that a turbo 400 output shaft has

 

[82355]

Just nitpicking, but there is no such thing as a "big block" Pontiac.

Martin

 

[sweetk30]

203 takes 1 tail shaft

208 takes 1 tail shaft

205 has 2 diffrent tail shafts

all for th400 only info .

so you will need the tail shaft for your tcase specificly.

 

[Bigg Jerry]

So let me get this right
Can I use the 208 case with the Pontiac trans by swaping a input shaft

 

[82355]

Output shaft of the transmission.

Martin

 

[jtrapani]

did they not put a 455 in the pontiac???

 

[RudyO]

Pontiac did not make a SB or a BB. Outer dimensions stayed about the same on all V-8 engines. One other thing, in regards to the transmission- the bellhousing came in two flavors (Chevy and BOP). Chevy peaks up, BOP down.

 

[jt512]

did they not put a 455 in the pontiac???

yes they did. Pontiac v8's are classified as small journal and large journal, all the "size differences are internal" so there were never big "blocks" and small "blocks". here is a good tech article about the poncho v8's

http://en.wikipedia.org/wiki/Pontiac_V8_engine

 

[blazinzuk]

So let me get this right
Can I use the 208 case with the Pontiac trans by swaping a input shaft

as long as the 208 came out of a turbo 400 if it came out of a 700 then it will have a 27 spline input all of the turbo 400 outputs are 32 spline

 

[BILTIT]

MMMMM, i love pontiacs!

 

[Bigg Jerry]

So I'm leaning more toward just getting a adapter plate to go between the Pontiac 350 and the chevy turbo 350 with the 203. Will this work ?

 

[blazinzuk]

Yep I have a buick 455 that has the bop pattern bellhousing and the adaptor for the chevy bellhousing It was in a plow truck for 5 years

 

[Bigg Jerry]

Would I be better off with a turbo 350 and a 203. Or a 700r4 with a 208 ?

 

[BILTIT]

The stock 700R4's dont live long behind most pontiac motors but the 350 may be ok. The overdrive would be great. I plan on putting a hot 400P in my chevy with a 4L80 or something of the like for the overdrive. I will be using the adapter plate aswell.