if anyone can give me a best guess on what kind of HP/torque the following set up may produce.
Chevrolet ZZ4 350ci with a Weiand 144 Super Charger, 8.5:1 comp, L98 Heads. Motor prep'd for blower, crank balance and keyed etc.

Stock spec on zz4 says 355 HP with 405 ft/lb torque

Short of spending 4 bones to get the car dynoed I am hoping someone can give me a best guess.

My concerne is my clutch set up. I have only one trip on the car, I bought it used, so I do not know how old the clutch is. I pulled the motor and have to replace several gaskets. Inspected the clutch and they are worn, .031-.035 and are a single disc 4 puck, still within spec but worn, small blueing on flywheel and KEP Stage 4 PP. Surface pretty smooth and flat. This could be from the leaks and or loading into trailer. Slight chatter but no noticable slippage. I have no idea how many miles on the current clutch. I need to put a new clutch in and plan on resurfacing the flywheel.

Kennedy says I need to go to a 2 disc set up....$$$ and think they may have made this determination from a HP guess. What is yours???

Thanks

sorry i cant answer your question. the first thing anyones gonna want to know is "how much boost" and secondly as im reading your post im like "all that on a single disk" i guess if its holding then its holding. might be saving your tranny at the same time

Alot of variables in there, The ZZ4 rated @ 355 HP would produce less than 300 wheel HP in a street car & I'm not trying to discourage you, but the 144 set up is not known for massive HP. Then depending on your trans/suspension set up you can figure out your total driveline loss.

I would say depending on boost level you are probably realistically looking at between 290 & 340 rwhp, but not alot more. a non hot rodded standard crate chevy just doesn't make the ponies a LS set up does, even with a mild power adder.

The good news is it's still a super charged V8, and you can still have alot of excitement with that set-up & be reliable.

depending on tranny I would say around 320-380, if the 144 is the one I am thinkin of, its a pretty small blower and they generally dont make more then 480-500 on a prepped motor. they just dont have the capacity. the blower itself is designed for a towing rig or to fit under a hood. I wish you good luck

I'm going to go out on limb and agree that you will need a double disc. Do you have a 9" or 8" clutch, not sure if it's an option for a trans but I ended up putting a 9" double in mine and so far so good, knock on wood.

k.e.p. 8" double disk will hold it easy and they make a s.b chevy flywheel no worries

Most of the wear and tear on your clutch is from feathering it to get in and out of the trailer. I'd recommend putting it in first gear, and just using the starter with the engine off to "walk" the buggy in and out of the trailer. This saves the clutch, and when you're driving it in the dunes, just remember not to feather the clutch or dump it.

You really need the double disk clutch regurdless of horsepower, the dunes is real hard on clutches. It will save you money in the long run.
DON~~~

Thanks for all the input.

I have learned more about my set up, clutch more specifically. The Transform 3 speed apparently likes to eat ring and pinions and use a VW input shaft, that was keyed for a snap ring at the spacer for 3rd gear, VW bearings, VW ring and pinion with Weddle gear sets. There was a specific reason why it used a single disc 4 puck plate, any more than that would grenade it much quicker, glad I did not go with something more aggressive like a double disc. So going into this I at least will expect to lose a ring and pinion sometime, somewhere, somehow. Hopefully by then more information will be out on the HV-1 so I can try and pimp the cash outa my wife for an upgrade.

Thanks again for all of the responses. I did talk with a guy in Sac, sent him over the motor specs, MAP and ignition programming and boost pressure I have seen the motor produce in the sand. He is guessing around 425hp and 450-460 Torque. I don't particularly care where it dyno's at I only needed the information to verify my clutch setup.