29 replies to this topic

[brandyspaw]

I've been researching superchargers for the SGT and have narrowed down my choices to three companies.
My short list consists of the Whipple that Ford Racing offers, the Kenne Bell 2.6L or the Edelbrock E-force.

What superchargers did you choose and why?  Also, when you installed your supercharger install did you upgrade your
clutch right away and also go with a one-piece driveshaft immediately? Thanks in advance for any feedback.

[andrewnagle1964]

Whipple, yes upgraded clutch and drive shaft.. cause it looked the best, sounded the best and not sure what else was going through my mind ?!?

you putting this on the stock block if so stay under 500 RWHP

You are going to need new tires soon and a good lawyer

Enjoy

[Rev Dennis]

I did the SC package through TASCA, and I would do it again, because I wanted a REAL Shelby GT/SC. Original clutch and drive shaft. I do not drag race. If not for the pedigree issue I would do the E-Force package. You don't need 500 RWHP unless you drag. It's a KICK though! Since it is a Shelby, not a standard GT, you ought to do the Whipple via a Shelby mod shop. The additional cost will be more than compensated for in knowing it was done right and in hard dollars when you sell it.

[carnut12]

Rev Dennis, on 02 November 2012 - 10:59 AM, said:

I did the SC package through TASCA, and I would do it again, because I wanted a REAL Shelby GT/SC. Original clutch and drive shaft. I do not drag race. If not for the pedigree issue I would do the E-Force package. You don't need 500 RWHP unless you drag. It's a KICK though! Since it is a Shelby, not a standard GT, you ought to do the Whipple via a Shelby mod shop. The additional cost will be more than compensated for in knowing it was done right and in hard dollars when you sell it.

Same here except I did the Aluminum Drive-shaft, stock clutch still going strong, but like Rev I do not race.

Love it!!!!!!!

[2007_Shelby_GT]

If you have the cash, take it to SAI or other Shelby mod shop, if not, DIY.

I did the Edelbrock E-Force and don't regret it one bit!  Did the work myself and I'm very pleased with the results - 466 hp and 428 tq at the rear wheels on 5 psi!

If you're planning on keeping your car till you die and pass it on to a family member, it may be worth the extra dough for the true GT/SC package, but my bet is that I'll be dead and long gone before this car get's to be a real collectible like the 60's models!  Drive it, and let the others that follow rant and curse you for enjoying your car!

Sam

[americaniron]

I went with the Whipple, but all three of your choices are good. I liked the up graded fuel system that they offered since I had planed to go with an all out built combo. I did up grade my clutch at the same time. I had already installed a one piece drive shaft.

[springer]

I had the Whipple installed during the GT/SC conversion by Shelby in Las Vegas.  My clutch is now a twin disc Ram clutch and is outstanding.  Before the Ram, SAI installed a stage 3 Spec, single disc clutch. flywheel etc.,  which was junk.  Removed after around 1,000 miles.

I recently purchased a 2007 GT/CS convertible, automatic, and if I supercharged it, I would strongly look at doing the Edelbrock E-Force not just for for economic reasons, but from my research, it appears to be a very well built unit.

[MaxCustody]

I love my Edlebrock E Force, it also looks really good under the hood (black and silver)!

[Larry T]

What is a safe psi to be used with the Whipple and what kind of HP and TQ?
Kenne Bell HP and TQ?
Edelbrock HP and TQ?

Edited by Larry T, 02 November 2012 - 07:22 PM.

[brandyspaw]

Thanks for all the feedback so far.  Right now kind of I'm leaning toward the Edelbrock.

Whatever one I choose I think I'll install the supercharger myself as I don't feel its worth the extra expense to go the Shelby GT/SC option.  I just don't think the resale values of these cars is all that great and don't think the Shelby SC upgrade is worth it for me at $10K plus.  It would just be that much more  money that I'd loose when I sell the car since I can't keep my SGT very long. (Part of the problem with being retired on a fixed income is that I can only afford one non-daily driver fun car at a time.  So many cars---so little time.)

In fact, if I go the supercharger route I'm planning on pulling it off when I sell the SGT as I likely could recoup at least half the price of the supercharger kit back. Moreover, my observation is that these cars appear to sell better at a cheaper price when left stock as long as they are fairly low (less than 30K) miles.  (So I'm planning on selling my SGT before it hits the 30K mileage mark.)  By doing my own work and selling off the SC kit separately when I sell the car I can have my jollies before I move onto some other kind of fun car.
At least thats the plan.

Edited by brandyspaw, 03 November 2012 - 04:31 PM.

[twobjshelbys]

The conventional wisdom on the 4.6L 3V engine is that it can handle about 625HP (crank), or about 550 at the wheels, which is what the original Shelby GT/SC literature said it was.  I think that is what FRPP lists for the Whipple too.  We do know that is not gospel as JeffJ blew his up with that or less since his is a Paxton without the same kind of boost you get from the twin screw top units.

I think mine was set to about 6lb boost.  It was plenty

[Rev Dennis]

Stop thinking. Stop being a mathematician, and enjoy the car.

[TNTchris]

Brandyspaw,

I did the whipple supercahrger and had it installed locally at a speed shop. I am located in St. Louis, Mo. and I purchased the SC at Tousley Ford in MN. I was reffered to them by someone on this forum board, Jason I believe. Ask for Steve in parts at Tousley Ford if you decide to go this route because he gives incredible deals for people on the forum for the whippe kits. Their customer service was great! I am so glad I went this route this car is so much fun with this much HP. I did everything like they would have installed the SC package in Las Vegas. I would have had it done there if i had the $'s.

TNTChris

[07SGT]

when you say the conventional wisdom is for 625 crank, 550 to the wheels, is that with a forged lower end?

[jmn444]

Pretty sure it's 550 at the crank with stock guts...

[twobjshelbys]

I am pretty sure the k. Was RSVP but to answer the previous q that is with stock internals

Forged internals will add a lot of cost

[2007_Shelby_GT]

I failed to mention that with my Edelbrock E-Force install, I also put in a GT500 dual-fuel pump set up just to make sure fuel delivery stayed consistent.  Also, immediately following the supercharger install, my stock clutch began failing so I replaced it with a McLeod RST dual disk.

There are incidental items that go along with a supercharger install - the fuel pump for instance, but beyond that, don't forget to install an oil "catch can" between the PCV an intake as there is a marked increase in crankcase ventilation!  Consider extra instrumentation as well to monitor oil, fuel, and boost pressures.  (I included the Shelby center gauge pod in my install.)  With the E-Force, you will need to replace the stock strut brace with one from a Bullitt/V6 Mustang as the stock FRPP will not clear the supercharger.

There's always stuff you don't think of when doing this sort of mod!

Sam

Edited by 2007_Shelby_GT, 05 November 2012 - 08:00 AM.

[AstroDan]

I had SAI do the Whipple 550 install in Vegas. I had already installed 1-piece Coast DS.
I love the Whipple because the tune is perfect, right out of the box. 3 years later still strong. My clutch is still stock and it is (pretty much) toast. I drive mine "spiritedly", to say the least. Noticable loss of WHP in 3rd and 4th.
Numbers posted below on 10lbs/boost.
Forged internals/FR Aluminator is in the works.

Any forced induction unit you install will make you smile. Guaranteed! Nasty-fast

[07SGT]

I would love to have a SC but I do not think the stock 4.6 will tolerate 625hp at the crank, or at least not for long.

[carnut12]

AstroDan, on 05 November 2012 - 03:09 PM, said:

I had SAI do the Whipple 550 install in Vegas. I had already installed 1-piece Coast DS.
I love the Whipple because the tune is perfect, right out of the box. 3 years later still strong. My clutch is still stock and it is (pretty much) toast. I drive mine "spiritedly", to say the least. Noticable loss of WHP in 3rd and 4th.
Numbers posted below on 10lbs/boost.
Forged internals/FR Aluminator is in the works.

Any forced induction unit you install will make you smile. Guaranteed! Nasty-fast

I am curious what you feel is causing the loss in 3rd and 4th???  Why wouldn't it be lost across the board?  Could it be you are just used to the power?  Just curious, I did not realize over time that power was lost, I have seen some cars after break-in actually gain power.