350 cui with a TH400?
 

i bought this the 77 4x4 Stepside but have not been able to pick it up as of yet
just trying to figur out what i really have bought

the seller told me his fairly sure its a 400 smallblock but hes not sure

as far i can tell its a TH400 tranny Right? what would it make any sense if it had a 350 infront or could this be the 400 smallblock?

Attachment 778184

sorry i have this in bigger resolutions but not any others pics of the engine

Re: 350 cui with a TH400?
 

If the motor is a 400 sbc it will have a section notched out of the harmonic balancer

TH350 tranny pan is basically square;Th400 is irregular
TH350 has cable kick down;Th400 is electric

400 engine was available w th350 or th400 ...as was 350

GVW and towing package determined trans choice....except all 454 were th400

Re: 350 cui with a TH400?
 

The tranny is a 400, but look at the balancer for the groove or run the numbers.

Re: 350 cui with a TH400?
 

there is also a gm 375 trans that is a cousin to the 400, the pan etc. is similar to the 400. The tail shaft is similar to a 350 turbo. I had one in a parts truck i thought it was a 400 until closer inspection.

Re: 350 cui with a TH400?
 

But they were in the 80s, not this style of truck. But anything is possible, this ones looks like it has early 80s manifolds on it.