Raptor_WS6

iTrader: (23)

need help guys, running a 416 with an F1c and want to hit the 1001 rwhp mark. what crank and blower pulley sizes would i need? been researching and found an impeller speed calc. the max impeller speed on an f1c is 74k. with an upper 4" pulley and a 8.5" lower, 6500 rpm shifts, the impeller speed is a 74.5k. any clue on what psi this will be?
416 10.1:1
stock ls3 heads
stock ls3 intake
1 7/8 header X pipe 3" true duals
238/248 115+4 cam

TIA

Rudy72

iTrader: (2)

If you max the speed and boost without slipping your belt you might be close to the 1k mark, i know its capable of 1200+ fwhp just not sure with stock heads & intake yet its possible just maybe depending on drivetrain power losses.... A2W may help with timing and inlet temps... What has your best results been so far?

Raptor_WS6

iTrader: (23)

putting it together now

416 is done
f1c - have
bracket- have
going A2A 4.5" intercooler core
e85 "flex fuel"


trying to get the pulleys next

scottywheels

I have a 12 rib crank pulley set up for procharger and some 12 rib pulleys. I went turbo...

scottywheels

that's my crank pulley...

Detoxx03

iTrader: (14)

I would just go with it like that. The LS3 intake is fine but the heads may not be. I'm running 16psi through my stock LS3 but psi is hard to judge and doesn't matter. I have a 4" tube on the blower, a decent cam, and a pretty free flowing exhaust on my car.

The Alchemist

iTrader: (19)

It's not about psi, it's about airflow. Max out the blower, make the air path as least restrictive as possible, and see where you're at.

Think of it this way, the more 'boost' you see, the harder it is to turn the blower, which makes it less efficient.

Bob@BruteSpeed

iTrader: (16)

What bracket are you using? Bob

Bob@BruteSpeed

iTrader: (16)

I agree. Bob