Question about 8hp Briggs performance curves

[Slackjumper]

I've got a 190402 series 8hp flathead from the late 80s early 90s. It's the 318.5cc rated at 8hp (rpm unknown, probably 3500?) and 12.7ft-lb @ 2500rpm. I would really like to see the curves if anyone has them. I've searched high and low.

 

[bob58o]

I would really like to see the curves if anyone has them.

Check out these curves.
Maybe not what you were looking for?
Sorry.

Attached is a Briggs curve, but not your engine.
What exactly are you trying to do with the torque curve numbers?