Want to Upgrade - Which Supercharger?


GTFUN

GT Owner
Aug 19, 2009
271
Atlanta,Ga
My pulley and tune is nice but considering an upgrade to a Whipple or Ken Belle.
Any input appreciated :)
 

427Aggie

GT Owner
Mark IV Lifetime
Aug 18, 2005
885
Frisco, Tx
I believe that the ken belle is just a swap of the snout of the supercharger. Most everyone here has gone Whipple with the upgrade if they didn't go TT.
 

GTFUN

GT Owner
Aug 19, 2009
271
Atlanta,Ga
Thanks, if anyone has a black 4.0 I would be interested in buying.
I'm sure it's not likely but on this forum.. you never know :)
 

nota4re

GT Owner
Mark IV Lifetime
Le Mans 2010 Supporter
Feb 15, 2006
4,301
Correct. KB doesn't have SC application for the GT. Even the snout is out of production and the same as a pulley upgrade anyway.

Only 4.0L Whipple is available. I would recommend 19psi pulley and tune from Torrie. I would be happy to source the parts for you.

1) 19 psi Whipple 4.0L
2) SCT + Torrie custom tune
3) NGK TR7IX plugs
4) MAFia (required)
5) Accufab inlet support (highly recommended)
6) Accufab TB (not required but looks nice with Whipple)

If you wanted to go with a 21psi 4.0L I would recommend adding the KB BAP. Also, I would recommend a custom dyno tune session (with Torrie) where data can be captured and verified that there is enough fuel availability the engine. I wouldn't ever recommend the 4.0L 21 psi without the dyno and data logging as too many issues already reported.
 

tmcphail

GT Owner/Vendor
Mark IV Lifetime
Apr 24, 2006
4,103
St Augustine, Florida
Correct. KB doesn't have SC application for the GT. Even the snout is out of production and the same as a pulley upgrade anyway.

Only 4.0L Whipple is available. I would recommend 19psi pulley and tune from Torrie. I would be happy to source the parts for you.

1) 19 psi Whipple 4.0L
2) SCT + Torrie custom tune
3) NGK TR7IX plugs
4) MAFia (required)
5) Accufab inlet support (highly recommended)
6) Accufab TB (not required but looks nice with Whipple)

If you wanted to go with a 21psi 4.0L I would recommend adding the KB BAP. Also, I would recommend a custom dyno tune session (with Torrie) where data can be captured and verified that there is enough fuel availability the engine. I wouldn't ever recommend the 4.0L 21 psi without the dyno and data logging as too many issues already reported.

+ 1
 

GTFUN

GT Owner
Aug 19, 2009
271
Atlanta,Ga
After a few discussions with some gt guys, I am leaning towards the Whipple 3.3
 

freeflyer

GT Owner/ Forum Sponsor
Mark IV Lifetime
Jan 12, 2007
180
Montana
Why not a TT?
 

GTFUN

GT Owner
Aug 19, 2009
271
Atlanta,Ga
It would be cool of course but not sure I want to spend that much :)
 

freeflyer

GT Owner/ Forum Sponsor
Mark IV Lifetime
Jan 12, 2007
180
Montana
Drive both first. Then you'll only spend once...
 

tmcphail

GT Owner/Vendor
Mark IV Lifetime
Apr 24, 2006
4,103
St Augustine, Florida
Drive both first. Then you'll only spend once...

Indeed
 

BlackICE

GT Owner
Nov 2, 2005
1,416
SF Bay Area in California
Drive both first. Then you'll only spend once...


:agree:
 

nota4re

GT Owner
Mark IV Lifetime
Le Mans 2010 Supporter
Feb 15, 2006
4,301
Agreed that the downside of the TT is expense. However, it is all bliss after that. Dial down to 16-17 psi to mill around town on 91 octane and a mere 800 or so RWHP and knowing that you can rip anything that comes your way. Put it on a road course all day long on 15 psi and never overheat and enjoy a very predictable boost curve. Go to a mile venue one day or a quarter mile, and dial up 22-23 psi with 117 Octane fuel and 1050 RWHP and have a truly unforgettable experience.

The TT's can be so flexible because you can so easily adjust boost pressures (and HP) for the venue at hand. In fact, for the street, I'd probably run it at the bare minimum of 11-12 psi (wastegate spring pressure) which is a psi or two less than stock but 700 HP and 630 TQ (at the wheels)! MUCH easier than even the stock blower on the engine and longevity.
 

2112

Blue/white 06'
Mark II Lifetime
After a few discussions with some gt guys, I am leaning towards the Whipple 3.3

That is what I just did (small whipple). Great throttle response and a ton of bang for the buck. I wanted too many other upgrades to shoot the whole wad on something more powerful, Maybe later?

http://www.fordgtforum.com/forums/s...les-home-from-the-quot-shop-quot-this-weekend

I was told they no longer make these but I believe several forum members have one sitting on the shelf.
 
Last edited:

GTFUN

GT Owner
Aug 19, 2009
271
Atlanta,Ga
Agreed that the downside of the TT is expense. However, it is all bliss after that. Dial down to 16-17 psi to mill around town on 91 octane and a mere 800 or so RWHP and knowing that you can rip anything that comes your way. Put it on a road course all day long on 15 psi and never overheat and enjoy a very predictable boost curve. Go to a mile venue one day or a quarter mile, and dial up 22-23 psi with 117 Octane fuel and 1050 RWHP and have a truly unforgettable experience.

The TT's can be so flexible because you can so easily adjust boost pressures (and HP) for the venue at hand. In fact, for the street, I'd probably run it at the bare minimum of 11-12 psi (wastegate spring pressure) which is a psi or two less than stock but 700 HP and 630 TQ (at the wheels)! MUCH easier than even the stock blower on the engine and longevity.

You make some very good points... I like the engine longevity part the best.
We are talking 15-16k?
 

2112

Blue/white 06'
Mark II Lifetime
We are talking 15-16k?

x2 Plus a little more.
 

Jason Watt

Had both, sold both
Mark II Lifetime
Oct 14, 2005
1,229
Copenhagen, Denmark
I just went TT (still installing) and has got a black Whipple with 19psi pulley and 750HP for sale;-)
 

BlackICE

GT Owner
Nov 2, 2005
1,416
SF Bay Area in California
Drive both first. Then you'll only spend once...


You make some very good points... I like the engine longevity part the best.
We are talking 15-16k?


With a TT engine with similar HP to a SC should be under less stress than a SC one. IMO this doesn't also apply to many of the accessory parts needed for a TT installation. OEM parts are built for longevity and minimal maintenance as a high priority, whereas aftermarket parts are built with HP and TQ as a priority.

e.g. the stock cast iron exhaust manifolds will last forever in most case, where most aftermarket headers and TT headers will not. Ferrari F360 and F430 are notorious for cracking exhaust manifolds if the car is driven more than being a garage queen. There are quite a few Whipples with 30K plus on them without any issues. How many TT have that kind of mileage with no more than routine maintenance?
 

GTFUN

GT Owner
Aug 19, 2009
271
Atlanta,Ga
I just went TT (still installing) and has got a black Whipple with 19psi pulley and 750HP for sale;-)
Which model is the whipple?
 

Jason Watt

Had both, sold both
Mark II Lifetime
Oct 14, 2005
1,229
Copenhagen, Denmark
Which model is the whipple?

3.3 Sir!
 

GTFUN

GT Owner
Aug 19, 2009
271
Atlanta,Ga
Pm me :)