Just got home from the dyno and wanted to post some numbers in case anyone is interested. Mods are as follows... Hypertech power programmer, Flowmaster Cat-back. Zex nitrous kit, 4.11 gears, LT4 knock module. RPM transmission, and thats about all pretty much stock motor. I put down 253 HP and 285 Lbs Ft of torque on the motor but then here comes the surprising numbers. On the bottle with 75HP jets i put down 314 HP and 404Lbs Ft of torque!! I was very happy with this seeing as how i have no bottle heater or purge set up. By the way this motor has 191,000!!! Still runs like a champ.

 

I'd say that's fairly good, no cold air induction kit yet? If that's the case I'd say you've got another 10-12+ rwhp corked up in the stock intake at this point too...

 

Awesome man, those are nice numbers for catback+HPP only.
I agree with Ray; if you don't have one already, get a CAI.

191k , that is awesome!