2005 S197 Model GT 4.6L Manual
Mods - Handling
Eibach Sportline Springs and struts, lowered 2"
Eibach sway bars front and rear
Track Wheels: PP1 Wheels, Pirelli P0 Tires (til they wear out) 275/40/19, 255/40/19
Street Wheels: Shelby CS67 20", Cooper Tires, 275/35/20, 255/35/20
Mods - Power
DOB Intake
M122 Supercharger, 3.375 Pulley (til engine build)
11 PSI @ 6500 rpm
DOB Supersingle HX
Ford POWA Pump
BBK Longtube Headers
BBX Xpipe
PMAS CAI
ATI Super Damper
8 Rib Conversion
Mods - Exterior
Cervini's Hood
Cervini's Window Vents
Temple Performance Spoiler
Temple Performance Splitter
Mods - Interior
Autometer pillar pod
Autometer Boost Gauge
Autometer Wideband
Hurst Short Throw Shifter
Background & Plans
I purchased the car a couple months ago with 48,500 miles.
I added the Supercharger and supporting mods.
Future plans are to build a forged short block with Boss Rods and Diamond Pistons (ordered)
Once the engine is built the SC pulley with be replaced with a 2.65", boost will be 18-20 psi

Figure it’s time for an update on the car.
It’s a lot different now and I have been terrible about documenting what’s been done.

Where to start, well I guess I’ll start with the engine. I picked up a VMP Gen 2 supercharger so to support that I built the engine, it’s a forged rotating assembly now with an Eagle crank, Boss rods and Diamond pistons.
Added some custom grind Todd Warren cams, limited the timing to 20*, and of course all new and updated timing.
Redline is now 7500 rpm, although the HP peaks at 6500, so typically shift around there.

Next is the transmission, the stock 3650 would handle the new engine so I swapped in a T56 Magnum XL and a RAM Concept 10.5, a very nice combo.

The rear end is a whole debacle, I ended up twisting the shafts on the 8.8” doing some drag launches, so I upgraded it to a Strange 9” 35 spline unit with 3.25 gears. It’s a great rear, I’m hoping I can fab up a Watts Link for it down the road.

Suspension wise I went a set of Pedder coil overs with Swift Springs, 10kg/mm rear and 12kg/mm front. The shocks are okay, I’d like to go with a set of Fortune Auto in the future. The springs are money, going from stockish springs to these was a night and day difference, the car is planted now and just sticks.

Interior is fairly mild, a pair of Braum Venom R seats and an 8 point roll cage.

We recently moved from the coast of NC back home to Utah. This caused a whole mess of cooling issues. On track engine temperatures hit 230 fairly quickly, so time for a change.
I was running a SVE 3 row radiator, which was great at sea level, not so much in the high desert at UMC.
Add to that the fact I was not able to monitor oil temperatures so I decided to make some changes.
I went with a Fluidyne 3 pass radiator and one of their late model dirt oil coolers, which I was able to mount between the AC condenser and the radiator, pretty slick IMO.
This seems to have gotten ECTs in check, last trip to track I never got over 208 on a 98* day. That was short lived as on the 4th lap one of the heater core hose connections blew, fortunately I was running water/water wetter only, so quick clean up.

Now to get the IATs in check, I was seeing IATs at 160* and not recovering, just holding there, more changes needed!

I already have a 22 gpm HX pump and a very large HX, so airflow is where I am focused here. I ditched the stock bumper for a FR tube bumper, this helped a ton. IATs were down and recovery was much faster after a pull. I went a step further and cut some vents into the bumper cover and trimmed them with bumper trim from a 96 F250, modified of course. Also fenced in the stack and made some baffles on the sides to keep air from going around the stack.

I ditched the fiberglass hood with scoops because aver 130 the under hood pressure started lifting the front end, that’s an unsettling experience.

Aero wise I’m running a 9 live racing dual element wing and a C2 Aero splitter and under tray, and a stock hood with Track Spec vents, I’ll be adding a set of gurney flaps to those soon.

I’ll add more info and videos soon, hopefully many more track days soon, hopefully be moving to time trials with NASA next year.

Random Autocross pics

She went from wonderful to " Wicked!!" Love the look but those pics are not in New Bern, NC ( been there ) , it looks more like California. Even though you are just autocrossing , I would pop those driving lights back out like one of your pictures for that little bit better air flow to the radiator and intercooler. Are you bringing the beast to Lincoln , Ne. for the Solo Nationals in September?

Bill Pemberton said:

She went from wonderful to " Wicked!!" Love the look but those pics are not in New Bern, NC ( been there ) , it looks more like California. Even though you are just autocrossing , I would pop those driving lights back out like one of your pictures for that little bit better air flow to the radiator and intercooler. Are you bringing the beast to Lincoln , Ne. for the Solo Nationals in September?

Click to expand...

The first pics are in Utah at UMC, the second set is in NC at NCCAR near Roanoke Rapids NC, and the night pics are at Southern National Motorsport Park near Wilson NC.

The lights are long gone, that was one of the first things I did to get more airflow.

No Lincoln trip this year, possibly next year if I continue to improve my driving, I’d love to see an event of that caliber!