I have a 68 camaro with a 421 stroker and a powerglide.

the powerglide doesnt seem to be shifting as far as i can tell.

I have a th-350 that i used with my 78 Trans Am with an Oldsmobile 455 motor.

my question is, will the th-350 i have bolt right up to my chevy 400 block or will i need an adapter plate?

I heard that the th-350/powerglide/700r4 are all dimensionally the same and i wouldnt have to change driveshaft length as well?

thanks in advance

mike

 

If i remember correctly, the 455 has a different bolt pattern for the bell housing than the small block chevy has.

 

If that TH350 is strictly a B-P-O bolt pattern, then no it won't bolt up to the SBC. There were some universal bolt pattern versions made, that would fit all. But if yours has the defined dip at the top, it's not a universal.
Transmission ID & dimensions:Automatic Transmission Identification
TH350 fitment specs: The GM HydraMatic TH350 Transmission - Novak Conversions

 

You can still buy a rebuilt chevy t-350 for $700+/-. A 700r4 is longer than a t350. The 200 4r is the same length as the t 350 short tail.