[Rev]

To add to thunderbolts excellent assessment, I just want to say that my Tri-Y's are good to 6000 RPM with good low end torque. That's with an Edelbrock Performer, 625 Road Demon, CC 268 HE, TFTW heads, and 2 1/2" exhaust with 3 chamber Flows. I personally like the Tri-Y's on a street racer type small block car.

Rev