460ci, 535hp Ford Racing Crate - Dyno??

[Spoony]

Anyone out there put there Ford Racing 460ci/535hp engine on a chassis dyno? I Just got mine put into a brand new SPF and was a little dissappointed with the results. I haven't take delivery of the car yet, and I have the engine builder and Ford Racing working on the figures as we speak.

The only change made to the engine was an 850 Demon Carb, and a MSD 6al ignition system. I've been told an independant rear suspension eats up HP on the chassis dyno, is this true?

Rear wheel HP: 392
Rear Wheel Torque: 419

I was expecting around 415hp to 430hp
Torque seems to be inline...

I was talked out of the 514/600hp, now I wish I would have done it.

Let me know what you guys think.

Thanks