Well... DYNO!

[T5superduty]

Ya but his set up might have messed some things up. The edelbrock 600 cfm carb isnt a real hot one and it has less compression than stock. The X-303 is for manuals and high compression " which he does not have" So those few things might have really screwd with his horsepower and torque. That is why I am asking what you guys would think of my combo seeing as mine prolly would work better than his =ing more horsepower and torque.

8.5:1 VS 9.0:1 compression- I have no idea on what a gain mine would have over his?

Y-303 Heads- "intake port 160cc" "exhaust port 53cc" hp gain 40

X-303 Heads- "intake port 178cc" "exhaust port 62cc hp gain 65

Edelbrock Rpm "air gap" Intake- they say around 8 horsepower over rpm intake.
625 demon carb vs 600 carb- it might have a little horsepower increase here and there.
as for your X-303 vs my B-303 he has about a 42" lift gain over mine I really dont know how much horsepower that would be. What do you all think about this ? Any ideas ?