Yep, and if you don't have an EFI engine you'll need a stand alone system for either one, that's why I questioned the "whipples are easier to tune" comment. If you can't make huge power easily with a centrifigul and have excellent driveability with good docking manners, then you are doing something wrong...


As an upgrade to a factory efi engine the whipple kits are tough to beat and Dustin's tunes are excellent. But it's pretty obvious by now which one makes more power.

yeap...putting mine together right now..HP500 +.030 509 M3SC...was on a EFI swithing to a pro systems blow thru carb...much easier to tune than the merc ECM's

Why not heads?

The crank mount set up is cool, but what if you need a pulley for your waterpump and hydraulic steering? I am not an engine builder.

That was a response to 47Excalibur who suggested you'd need Dart Pro1 335cnc heads and a 4.0l Whipple to make 800+. Normally he gives cam specs too, but I didn't see them this time...

If you wanted to spend the money on those heads you could, but with a procharger it wouldn't be necessary and in my opinion are too big for a 509. I made 1305hp with a 555 running as cast AFR 325's and an M4 on 92 octane. Look at Kennyo's post and the power he made with factory iron heads. Procharger's rock!

If pro chargers and whipples were the same cost the answer is much simpler. The reason is pretty strait forward. Very few would pick a pro charger over a whipple for the same money. I have a quad rotor and I have yet to hear anyone say they bought a whipple to save money. They buy whipples for simplicity and looks. I believe the whipple with the calmap efi system from dfi is the best setup going, but far from the cheapest. That comes from someone who doesn't particularly care for Dustin Whipple.

Try keeping something factual. "Every time"? Pretty bold statement.

PC does not make more power, the SC efficiencies are nearly identical when compared size for size. It comes down to supercharger size, intercooler size, engine combo and proper setup.

As for setup, on carb's, theres no question a Whipple is easier to tune and doesn't require "special" setups such as blow-thru styles. For EFI, there pretty much equal for calibration work, both require custom calibrations for custom applications.

Better cylinder heads always help a combo. But by no means "required". The stock 525's make nearly 800hp and they have Edelbrock heads (although not as good as standard Edelbrock BB heads). It doesn't matter what SC you have, a better flowing cylinder head will make more power or the same power with increased reliability. Lowering the inlet restriction lowers parasitic losses as well as manifold temp, while increasing flow.

http://www.procharger.com/f4supercharger/index.shtml

I'll stand by that statement and take the challenge anytime...