Here's a generic view of things.
[SIZE=3]WHIPPLE!!!!!!![/SIZE] Nothin runs, sounds and looks like a whipple!
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Here's a generic view of things.
If the graphs represent the same basic motor with the respective supercharger's max safe boost then give me the lighter colored representation which starts around 600 at 3500. At 3500 that is all I need and it does pretty good on the upper end. So when do we get the details
How are we supposed to know which line represents which blower??Originally Posted by tomcat
Tom,Originally Posted by tomcat
To be clear, the "single" Whipple has made over 1100hp. Bob Teague sales his TCM900EFI which produces OVER 900hp, this has been available for nearly 2 years. Our new 305 supercharger lineup can produce nearly 1800hp so a "single" unit can certainly pump enough airflow to make the HP.
As for the best blower, every type of forced induction has it's niche and could possibly be considered "the best" in a certain field. The turbo will almost always give you the most peak horsepower, the screw compressor will give you the broadest power band.
As for the PSI questions, the quad rotor was not capable of the airflow levels required for the 1500+hp when the 2.3 liter compressors were the only ones available. 3 years ago, we released the 3.3 Liter quad rotor and since that time, many of the largest, most recognizied engine builders have chosen them over the PSI because they make more torque and more hp at lower boost levels, not to mention distribution, idle quality and fitment. We made a 9.8 liter race supercharger which Racecrafters used on his motors, this re-wrote the record books in drag racing and was king for a good 6 years. But with rules and other companies bending the rules, the latest PSI offered racers in the 60lb boost range better performance. In the marine application, the 980 is far superior to the PSI, as well as our quad rotor, but we don't make the SC anymore.
Ratman, Pat Austin used our screw compressors up until their last season of racing.
Correct me if Im wrong but it seems like HP500's with "Procharger" type superchargers blow up much more than a 540 with a 871?? Is there a safe type of Procharger to add to a HP500 with the correct gaskets?
From what I saw she ranks way up there...Originally Posted by SR-24
Lets see... Let me think... Aah can't remember right of hand.
no your correct... its because the setup was never correct..people put procharger/vortech on hp500 and blowthru/pressurize the carb (something it was never meant to do) with bad results.. the basic tuning advice they give you on carbs is weak at best!! if anyone with out allot of knowledge of carbs try this,,, it WILL end with bad results.. now EFI is a whole different setup much easier..Originally Posted by ActiveFun
I tried to be very clear in my original posts from 2004. To compare blowers fairly you need to compare HP figures achieved on similar or preferably identical engines. On a nearly stock 502 the single 3.3 will not make 950 HP. The best installation I have seen of the 3.3 on HP500EFI engines is by Strip Poker and his dyno results are on record here. He made ~850 @ 10 psi with a bigger cam and ported heads, and I think that's great. On this same thread Mike reported 1067 HP, but that's on a custom built 540 with great cylinder heads and cam.
Vortech claims 1100 HP for the V-4 J trim blower that we use in our supercharging systems, but we recommend stepping up to a larger X or XX trim if your engine needs that much air. We will just have to wait and see how much HP the new big single Vortech as used by Keith Eickert on Bill P's "Ballastic" will make. After that there's always the twin blower system if you really need more capacity.
Turbo, centrifugal, screw, roots...that's the order of HP at high RPM. At low RPM it's screw, roots, centrifugal, turbo. Anyone trying to decide which way to go needs to consider the shape of these curves and relate them to their needs. There's a blower type to suit everybody, but as was mentioned by several previous posts, more torque at low RPM is not always necessary or beneficial.
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