Dave1968
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Is there any word yet on exactly when the new supercharger kit will be available and the price? It's getting close to 2016 when they said it would be ready.
If you visit the "other" site there is a thread that is updated on a regular basis regarding the progress on the pro charger...
Apples and oranges. The procharger is a centrifugal unit. The Sledgehammer is a twin screw like the supercharger on the Hellcat. The Sledgehammer is being developed by Arrow which, as we all know, is an expert on all Viper engines. Dick Winkles now works for arrow.
When both types are available, I would wager that the Sledgehammer will blow the doors off the procharged vehicle.
The power comes in at a lower RPM with the twin screw. The stock Paxtonized kit cars are very reliable but the Roe cars in the same boost range do better in the quarter mile. I have had both. My Gen III was Paxtonized and my Gen II was Roeized. There are good reasons that FCA, Ford and GM use twin screws in the Hellcats, Mustang V8, Camero, Vette, and Caddy. In fact, to my knowledge, a centrifugal supercharger has not been used in an American vehicle on an OEM basis for as long as I can recall - maybe never. The Grand National had a turbo on it. And the new performance V6s use turbos. You also see twin screws used in the Top Dragster, TAD, Top Fuel dragster and Funny car classes.
As for heat, both applications require intercooling. In general, the twin screw does use more power to run itself.
I want to stress that the stock Paxtonized Gen III cars are great and, based on my experience, bullet proof.
I wasn't reading car magazines yet; but, the '57 & '58 Studebaker Golden Hawks were produced with a McCulloch centrifugal supercharger. My dad had a Silver Hawk, no blower. The '63 & '64 Studebaker Avanti R2 & R3 had Paxtons.In fact, to my knowledge, a centrifugal supercharger has not been used in an American vehicle on an OEM basis for as long as I can recall - maybe never.
I wasn't reading car magazines yet; but, the '57 & '58 Studebaker Golden Hawks were produced with a McCulloch centrifugal supercharger. My dad had a Silver Hawk, no blower. The '63 & '64 Studebaker Avanti R2 & R3 had Paxtons.
Thanks for the info, though I have to wonder if a big part of the reason the big 3 went with a twin screw was due to packaging; it sits nicely on top of the motor rather than to the front/side (which adds plumbing to intake, etc). I agree a screw is very reliable but so is a Vortech
The PD blower is used in OEM for one reason, the emissions can be controlled, because the liquid cooling systems maintain constant IAT and can be regulated because of that. With an air cooled centrifugal that is not the case. It is MUCH harder on the driveline components when you have added torque lower (twist and grip) thank the smooth increase of the centrifugal IMHO.
I'm not the engine engineer, I just have them as resources.I'm confused as to how IAT would have any effect on emissions? The computer will compensate for IAT changes, so the intercooloing being water to air vs air to air is negligible. IMO has more to do with power down low that you can feel. Viper was blessed with a ton of torque so boost down low is wasteful. Drive something like an 4.6L mustang and it's obvious that the power lower in the rpm range is welcomed. Having had both, the centrifugal is actually boring usless you increase the rear gear ratio to get into boost faster. Mashing the pedal in any gear and getting response is better than down shifting 2 gears to get the same result. When I used to take friends for rides in my Paxton supercharged mustang their response was "That's it, alot of money for that." Take people for a ride in a 04 Cobra or Gt 500 shelby with the same or less peak power and they are amazed and grinning ear to ear.
Good info. Thanks. I forgot about the Studebakers.
Ah, maybe you did not notice but the supercharger is not connected to the air intakes. Please post a video after the system is completely hooked up and running.