HIT

To the people who has gone the Procharger route, this may have been talked about before, but in your opinion and experience, what is the drivability difference of the Stock blower -(Pully,Headers,Cai,Meth,Tune)...vs..Proc harger F1 or X (Heads,Cam,Meth,Headers,Tune)? Hows it FEEL ????? Be honest would you go back or wish it came like that ?

Z06NJ

Can we also ask about the Whipple? I'm curious how the power delivery is for all these in comparison to the stock one we have. TIA.

kazoo794

Thanks for the question, I am in the market for one and shopping around.

WuTang

Bump

Also wondering how is drivability with a procharger and a bumpy cam...

davepl

The cam is whatever the cam is - that's up to you. But switching from a positive displacement blower to a centrifugal gives up a lot - like a couple of hundred lb ft of torque down low. They make up for it with the top-end charge at the track, however.

Let's say 2500rpm, in-town cruising. With the TVS you're making 600lbft. With a centrifugal you're likely just starting to see boost, maybe 350 lbtf.

There's a big difference between 600 and 350 lbft of torque, so you lose all that. Now at a screaming 6500 I bet the Procharger can pull an extra 100, 150hp out of it. But not down low.

Thankfully, the 6.2L engine is by itself large enough (which is why you still have 350 lbft without a bunch of boost).

If, right now, you think the LT4 is -too- powerful down low, then you'd likely not be disappointed with the loss.

What's you goal though? If it's a quicker dragstrip ET, then a new blower such as a centrifugal makes a lot of sense. If it's just to make the car more fun to drive, you might go backwards.

marco383

Simply stated, the original Z06 blower, as well as the Whipple punch harder at low revs. The trade off is that they run out of breath above 5000 rpm, and because of this, the centrifugals post significantly higher peak HP numbers. For a car that is primarily street driven, the positive displacement superchargers will be more fun, and this from a guy that runs an F1C Procharger on a 427 C5.

mtaylor

I've heard that you can gain some of the low end back by over spinning the procharger and using blow off valves to limit max boost. It's harder on the blower though.

marco383

As an engineer, that concept irritates me. While I realize that owners of modded 'Vettes aren't into economy, it will also further reduce fuel mileage. Just adding a cetrifugal without intentionally overspinning it costs 3-5 mpg, even when driven sanely.

mtaylor

Totally agree however most people adding aftermarket supercharger would still probably do it even if it only got 5mpg all the time.

2019 ZR1

I went with the ProCharger F-1A and love it. I also have American racing headers and my car is at the shop right now getting a meth kit and I'm going with E85. With the Akrapovic exhaust it sounds and run bad a$$.. Sure for the track it might not be the right set up but for the street it is awesome. I don't track my car so I feel I made the right decision. If you want to sit and spin tires at the stop light keep your stock supercharger and add pulleys and bla bla bla. Same with Whipple again if you want to spin your tires get one.. As far as the 3-5 mpg fuel lose goes who gives a **** when you're kicking the Whipple or pulley guys a$$... Just my thoughts...

BooSSted

Who the hell buys a performance car and is honestly concerned with MPG?
As stated those who actually mod and play beyond the lots for cars n coffee could careless.

jbenz_21

i don't understand why would you be concerned with MPG from the beginning anyway when youre talking about a Corvette...

drive it like you stole it

FastestBusaAround

Have had many Twin Screw/ Roots / PD and Centri blowers...on Vettes and numerous other cars/ trucks. If not racing, I always prefer the non-centri blowers because of the huge TQ down low, because you're also not revving the **** out of the car in normal street driving.

BOV's are noisy and sometimes very fickle - and you don't have them in non-centri blowers (a good thing). They sound like a street sweeper during normal use.

I'll take the huge TQ/ power down low vs. the higher power up north of 5K RPM any day. Rather make power with the engine working less, rather than more. And it makes for a more fun driver.

It's a personal preference, but YMMV...

Factory blowers are never centri blowers...gotta ask why that is.

CobraAaron

Who actually has a Whipple on a C7Z?

vtknight

My guess is cost.

I actually bought my F1A centri PC for the exact opposite reason Busa likes roots or twin screw. The down low torque was too much and made the car undriveable to me. I found the centri added the perfect balance - and the F1A even without the cam and 18% lower I have on now still had solid boost building at about 4K. I hope to improve on that.

Also - roots especially are heat soakers. Twins are better - but they still have issues. I can tell you I am NOT a fan of SC's at all, but the PC route really worked well for me. The power comes on and stays on until you shift and then you are in power forever. Daily driving was fine for me and power was a downshift away.

I would say as of today I know more PC builds going on than any other package - and they are also putting down the best slips by far. SO form a performance and real world workability perspective - it's a strong solution.

HIT

I didn't suggest anything about MPG or a Whipple. Who gives a damn about that ? I'm talking about down low feel vs up high feel basically.

See06

I think from an engineering stand point, burning 3-5 more mpg at cruising simple shows wasted energy. If the mixture is correct , using more fuel under load usually equates to more crank HP.

mulalleybs

Are there any good superchargers to swap on that would be good for road courses still?

NicD

Personally I prefer the PD blower because my car doesn't live above 5500 rpms the whole time. I like the torque down low because it's usable on a daily basis and a centri just doesn't have it. Sure a Centri is capable of making more power than the stock PD blower but that's not my concern on this vehicle. I'm waiting for the new 2650 rotor pack blowers to come out this year and then I'll upgrade. I also like efficiency and I DO care about gas mileage, it's the tuner in me to optimize things.

BrunoTheMellow

Do you guys have trouble with traction in 1st and 2nd with the stock blower?