CorvetteDave01

Hello all,
I am just about in a position to start working on my '76 again after a 6 year hiatus due to moving to Virginia, new job etc.

I have a '76 with a SB427 with a FAST xfi fuel injection setup and was wondering whether or not anyone has successfully mounted one of the Torqstorm passenger side mount Centrifugal setups? They sent me a diagram it just eyeballing it looks like it might be close if I change the upper control arms out. They say it will run up to 10 lbs of boost on the 427 which is all I need.

CorvetteDave01

Dimensions attached

Gale Banks 80'

What Compression Ratio is Your 427 Small Block running ? Stroker Motors get more difficult to keep the Compression down as they grow. I built my 400@ 9.8 with conventional parts but had I gone bigger I would of had to use custom made Pistons or Heads.

CorvetteDave01

10.3:1 compression. I'm planning on running E85 though, so I should be ok.

ajrothm

I would stick with a vortech/Paxton or Procharger head unit. TorqueStorms are jokes.... as are powerdyne and any other non common brand centrifugal... They are not common for a reason.

I think your engine on E85 would be fine with some boost. Keep the intake temps in check, timing conservative and read plugs/log data. Should be a killer combo.

A D1SC Procharger would probably make around 650-700 rwhp on your combo with 11-12 psi of boost. I'd put meth on it with the E85 since you're not likely going to squeeze an intercooler on it.

CorvetteDave01

Any companies out there that make a passenger side mount charger? If not, I'll look into the D1SC. The centrifugal kits are a lot cheaper than a Whipple and the torq builds with RPMs so I think I will have less traction problems.

Anyone else have any feedback?

David

ajrothm

A D1SC is a great blower. It's capable of 800-825rwhp with a stick trans and efficient drivetrain.

Not sure about the brackets tho. You're gonna have to contact ProCharger and Vortech to discuss brackets. Most I have seen are driver side mount.

ajrothm

I'd go with this setup if I were you and relocate whatever you needed to to make it work. You need STRONG brackets so...I'd with proven stuff.


SBC:

https://www.procharger.com/automotiv...efi/sbbb-chevy

ajrothm

Vortech makes a driver's side mount kit:
http://www.vortechsuperchargers.com/page.php?id=30138

RonL

The Vortech fits but I had to cut and weld the front crossmember to make the front pulley fit, also the supercharger is very close to the upper control arm which are the VB&P control arms, Also just had to move the altenator to the passenger side and install a remote reservoir power steering pump. The supercharger is very close to the edge of the ridge that the hood sits on. But this is a big block.

hugie82

That torque storm will be right into the upper control arm. If the have different size belts I would try fabbing a bracket. A little higher and closer to the valve cover might get it sitting good. I assume you don't have AC on this car since the compressor and torque storm will be occupying the same area.

CorvetteDave01

Thanks Alan and Ron for the responses.

Alan,
I think you are right, I should go with a tried and proven setup. The passenger mount system was tempting from a simplicity stance. I'll go with a D1sc or F1 or possibly stick with a Vortech like Ron since the bracket obviously works.

Ron,
Why did you reroute the intake pipe around to the passenger side? You couldn't route the pipe to a carb hat on the drivers side? Did you have a carb and then go to fuel injection? Is the turbo unit going to hit the hood?

I have exactly 3.75" from the top of my throttle body to the stock hood, so I can at least put a 3.5" hat on the TB. I'll have to get the VBP upper control arms too. I can cut and weld the front crossmember to fit the pulley, that shouldn't be an issue.

CorvetteDave01

Alan,
By the way, I dug up a thread from about 5 years ago where you and George gave me some good advice regarding the auto tranny I'll be putting in later this year. Once my shop is built in a few months I can start working on the vette again...

1. Get it running again
2. Frame and roll cage
3. Turbo unit
4. Turbo 400 conversion
5. Race

RonL

The piping on my 1977 corvette was only put this way for the interim.
I originally had a QuickFuel Blow-thru carb but went to a FAST XFI 2.0 Setup. I wasn't sure if I was going to install a air/water intercooler or methanol injection. I ended up purchasing a Snow Performance Methanol Kit. I intend on having the piping connected directly into the front of the engine, Keeping just enough room to install the Turbosmart Raceport BOV and the methanol injector.

JoeC427

Very cool!

cardo0

Dave i dont have any experience with supercharging or supercharges but i have to wonder why u didnt consider a roots style like the Wieand or even the Eldelbrock (edlebrock are EFI ready) and a powerglide trans? Well thats mostly a dragrace combination but with EFI it could be very streetble. The centrifical sc has it place but it does have to spool up - and theyre really not any cheaper or less complicated than the roots blowers.

Good luck and nice 427 sbc u have there.

CorvetteDave01

I'm trying to keep everything under the stock hood so that the body still appears stock. Additionally, I have enough traction problems as it is, so having a supercharger that spools up seems the way to go. I have and still am considering a whipple, but I think I would have to put my L88 hood on the car but my traction problems will get worse I think. I have pretty much ruled out the tall blowers that stick out of the hood, although I do like a lot of cars that have these; its just not for me.

I'm pretty much sold on the T400 with the 3.25 rearend I think I will still have a streetable combo which can run ok at the track. A two speed just doesn't seem to be as streetable and several people have recommended the T400 for my combo rather than a powerglide.

97C5

With the caveat that I think the centrifugal is a good choice based on your aesthetic preferences, your usage of EFI allows you to manage power however you want and wouldn't use that a reason for discounting the whipple.

ajrothm

A whipple is a heat pump.... They have high IATs, heat soak like a b*tch and your system will be retarding timing from knock. Not to mention it takes more power to run a top mount type blower as they are not nearly as efficient. That is power that is being wasted and not going to the wheels.

A centrifugal blower will not help your traction problem, if youre spinning now, its gonna get 10x worse with the blower... You'll start seeing 4 psi by 4000 rpms, that's about 80hp (on average)... Best bet is to solve the spin problem first. A T400 will definitely calm down the spinning a bunch...

I can dead hook a 20 mph roll in 1st on MT ET Street radials with 650hp/650lbs tq and a 3000+ stall with a T400/3.36 combo.

CorvetteDave01

I guess my comment about traction was intended as a comparison of adding power with a whipple or roots style blower vs. adding power with a centrifugal that builds boost. I'm pretty sure that you get a lot more boost at lower rpm with the roots style blowers which would make the traction issue worse relative to a boost building option. Regardless, I know I'm going to have more issues with traction than I currently have, lol. With the 10.5" slicks, it wasn't so bad even without getting the 4-link dialed in and once I get the weight transfer right, at least at the track, I should be ok on traction. I just don't want to have too much tq at low RPMs if I can avoid it. Maybe I'm wrong, but that is my thinking anyway...