2.3 4lb lower

[mrpork]

Dan and rob what should a 2.3 Whipple and a 4lb lower 3.25 upper net me on hp/torque

[Ram77mus]

I would think it would make 630+hp and 600+tq. That pulley combo should make 19-20 psi boost

[mrpork]

is 20-21 lbs of boost safe for my motor.I would think it would make 630+hp and 600+tq. That pulley combo should make 19-20 psi boost

[Ram77mus]

is 20-21 lbs of boost safe for my motor. I would say that is a little to much for pump gas(93 oct.) You can detune it for that boost level but then you mind as well run less boost and end up with the same power and safe for pump gas.

[mrpork]

right now im running the 3.5 upper and 4lb lower. the tuner got 582.4 out of her and right around the same for torque. does that sound right to you?

[Ram77mus]

That power is about what 15psi makes. My old car ( ya sold the Cobra) has the same pulley combo and it made 646hp & 598tq. How much boost do you see?

[mrpork]

wow you sold it why ,that car was beautiful. do you still have the truck. right now i have a 3.50upper and the 4lb lower on the car it made 582 to the wheels and right around the same for torque(dont know what the air fuel is i dont have that graph yet getting it monday). now what i would like to know can i put on a 3.25 upper and be safe. the comb im running now i see 17-16.5 up top then it even's off to 16lbs of boost thru out the whole pull.That power is about what 15psi makes. My old car ( ya sold the Cobra) has the same pulley combo and it made 646hp & 598tq. How much boost do you see?

[Ram77mus]

You can, that will bring you to 19-20 psi (thats pushing it) but you should be making more power with the setup you already have. What is the AFR is from 4000- 6000rpm and how much timing you are seeing at the same RPM? Also what kind of dyno they using?