F1-A or F1-R
The only way i would go with F1-A is the clearance we can have between the radiator and the head unit. The F1-R or C will be a tight fit and we will most likely have to cut the front brace of the car and make it thinner or add another alum bar to strengthen the car regidity.
Originally Posted by kp
I decided to try an F1A, since all I have to do is bolt it on we'll see what happens as soon as it gets here 
You need an F4
Save ya from selling the F1A next year.
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According to my calculations... The F1-R would be running at 70000 impeller RPM with a 7.25 crank and 3.8 SC pulley at 6800RPM. That doesn't sound bad at all. Im sure we will see 17-19psi with that pulley.
If no one bought the D-1SC we will most likely take it to 7000 RPM with 3.4 pulley
According to my calculations... The F1-R would be running at 70000 impeller RPM with a 7.25 crank and 3.8 SC pulley at 6800RPM. That doesn't sound bad at all. Im sure we will see 17-19psi with that pulley.
If no one bought the D-1SC we will most likely take it to 7000 RPM with 3.4 pulley
Originally Posted by CHRISPY
Awesome info guys. If I go blower I'll go F1A and front mount right from the start.
What pulley setup on a 346 will yield about 10#'s boost at 6300rpm with the F1A?
What pulley setup on a 346 will yield about 10#'s boost at 6300rpm with the F1A?
TECH Resident
Joined: Oct 2005
Posts: 787
Likes: 0
Originally Posted by Vortech
Do you think it's possible to run a 6 rib with a F1C or F1A? The gear casing looks so much bigger-just wondering if it's any harder to drive than a D1SC?
8 rib or better is a must. They both move substantiaaly more air than a maxed D1SC and the lower ratio transmission places a higher load on the drive.
http://www.exoticperformanceplus.com...Car.php?car=40
We used the eight rib on this C5, along with the ECS balancer/crank pulley, which is larger in diameter. The larger diameter of the lower pulley really helped us out with belt slippage. Andereck is correct, as always... You have to use the eight rib. Bob
We used the eight rib on this C5, along with the ECS balancer/crank pulley, which is larger in diameter. The larger diameter of the lower pulley really helped us out with belt slippage. Andereck is correct, as always... You have to use the eight rib. Bob
On The Tree
Joined: Oct 2005
Posts: 106
Likes: 0
From: Boostville
Originally Posted by Vortech
So Bob the procharger 8 rib upgrade doesn't include the crank pulley?
Not on the F-body cars or the Corvettes.
When making the 8 rib upgrade.....
#1) From your ProCharger dealer, you need to get the 8 rib upgrade kit(s)
#2) As well as a ATI Performance Products Balancer.
The parts from ATI ProCharger include the new Blower Crank pulley, Blower pulley, belt, idler, and hardware and spacers.
The new Crank pulley will only bolt up to an aftermarket balancer. (An ATI performance parts unit)
Reason for that is, better mounting surface, and the new balancers have better hubs in them to take the power that is going to be needed to turn blowers that are going to require 8 rib belts. Plus if you are making that much power, you might as well have a good balancer on the car anyways.
EA
PS: On the Corvettes you need a true 8 rib balancer. BUT, on a F-body car, you are just getting a 6 rib factory replacement unit. Since the F-bodys run a dedicated crank pulley that mounts to them.