I have a 1985 v6 firebird with a 700r, I am swaping to 350 out of a 75 blazer. I know that I have to get a v8 700r but will the v6 torque converter hook up to the engine and transmission or do I need a v8 torque converter?

 

The V6 torque converter will work fine with a V8 engine and TH700 transmission.

 

I just pulled the v6 out and the torque converter bolt holes don't line up with the holes in the 350's flywheel.

 

The Blazer most likely had a 168-tooth (14") flexplate. I presumed you would be using a 153-tooth (12-3/4") 3rd gen type flexplate - my bad.

Of course, a flexplate is going to cost a lot less than a torque converter. But, you'll need a 3rd gen starter as well.

So, use the Blazer flexplate and starter with a different torque converter, or get a 3rd gen flexplate and starter.

 

Yea, I was using the blazer's flexplate, I didn't realize they would be different.

Thanks for the help

 

There is a third option - get a new flexplate for the Blazer application that has the smaller torque converter bolt pattern. Readily available, and don't cost that much.