Whats the stock stall for the 6 cylinder torque converter for a 1991 firebird. The main question I have is how would it work on a v8? Its not from the 60 degree V-6 patern 700r4 either.

Here are photos of the transmission.

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What it stalls behind a v-6 is irrelevant. If you put it behind a v-8 it will stall higher(how much?dont know that). I once use a stock converter for a 4-cyl vega in a th350 behind a 355 with a b&m 177 blower on it, gave me about 3250 of stall. It wont live long though.

 

Exactly why wouldnt it live long? If im not drag racing with it what exactly will go wrong?

 

I have successfully used Buick V6 torque converters behind Buick and Olds V8s with no problems. With a small block they give me about 1800-2000 and with a big block I get around 2200. Nothing to brag about, more like a "saturday night special" type of thing. It's better than stock to the point that you're happy you did it.

If you are using a 4.3 converter you may not notice much of a difference. I'm betting you'll be in the 2000 range as well.