I'm using a single Nickerson carb.
Holley 800
4 corner idle
8-9# of boost on a 502

I've picked Dean Nickerson's brain about a twin carb set up and he says he hasn't run into a situation to warrant the twin set up yet. He's dyno'd well over 900 hp. I think I'm around 875-900hp. I don't KNOW because I haven't dyno'd but I know how much hp it takes to push a Formula 242ls close to 95mph. My boat's a pig, but it rides decent.
Last year I was using a 4.75" pulley and saw black stuff on my transom. Using the 4.5" pulley this year should give me another pound maybe 2 of boost because I'm getting into the compressor's sweet spot a WOT.

He hasn't even given me bigger throttle plates yet and I'm still at 79/98's. Which means I have plenty of jet sizes to go.

I guess I'll find out.

DAVE

Turbojack, that was 63 with power valves in primary side, and 84 in secondaries no power valves. The carbs are 450 Holley's, done by Nickerson. He stated, no black transom and runs great low rpm, midrange, and top end. he was turning a 36 pitch prop 5800 rpm's with a 1.5 gear in a #6 drive.

Thanks for the response guys.
Hey Dave sounds like that Formula runs damn good! I've been thinking about going with the Prochargers on my carburated 502s but I've heard a lot of "bad press" on the carbed version. Glad you have proved them wrong! Looks like Nickerson is the way to go for a set-up.

Bob,

Pro Chargers are fine, if you know, or have someone who knows what they're doing. If not, there is a learning curve, and it costs money. Trust me...I know about the learning curve, cause I'm still learnin'.

In my opinion, Nickerson is definatley the way to go for any high performance set up where you need carb work done.

The blower subject has been discussed many, many times on this board. In my opinion, if you choose Pro Charger, Whipple, or a roots, you'll get the hp you're looking for, it just depends on what parameters you need to operate in. Those parameters will tell you which blower you'll be buying.

DAVE