Twin Turbo Stage 2 V6
Shortblock: 272 cubic inch Stage 2 V6 on-center crossbolted engine, JE pistons, Carrillo rods, BMS crankshaft, White Racing cam and EVAC system.
Heads: Stage 2 heads, T&D rockers, Billet Fab valve covers.
Intake: Buick 4bbl converted to EFI; PTE plenum, 90 mm throttle body.
Turbos and Exhaust: ATR twin turbo headers; LT70GTQ turbos (0.81 exh housings, 60-1 comp housings); 40 mm TiAl wastegates; 3" downpipes.
Water cooling: Meziere water pump, Afco radiator.
Intercooler: PT1800 5 gallon water tank; in-line Meziere water pump.
Transmission and Rear: Coan Max Performance Powerglide; Mark Williams yoke and driveshaft;
Strange aluminum 9" thirdmember; Strange axles; 4.11 gears.
Suspension and Brakes: Four-link with wishbone; rear Koni coilovers; front Strange struts; Strange disc brakes.
Steering: Wilwood rack and pinion.
Wheels and Tires: Weld 15" Prostars; M/T 24x4.5 frontrunners; 33x16.5 slicks.
Engine Management: FAST bank-to-bank system.
Fuel: Weldon regulator, filters, 2035 pump; KB boost-a-pump; 160#/hr Bosch injectors.
Ignition: MSD 7AL2, Pro Power coil, 2-step, distributor, wires.
Gauges: Autometer Pro tach, water, oil p, boost); Fluke digital thermometer (EGT); Raptor shift light.
Body: Original steel roof, doors, rear quarters, grill and lights; fiberglass fenders, hood, decklid, bumpers.
Acknowledgements:
Machine shop: head and intake porting, EFI conversion, and engine build by Sunset Racecraft.
Fabrication: Mike Carpenter (race car builder in Lubbock), performed the fabrication for adapting the GS for twin turbo V6. He fabricated the downpipes, intercooler pipes and water tank. He fabbed motor mounts and modified the midplate, fabbed a new hood scoop base and scoop mounting brackets. He reconfigured the steering shaft for clearance, performed header modifications for the wastegates and for turbo/chassis clearance, fabbed the throttle linkage, oil filter and fuel Y-block mounts, ECU and datalogger mounts, behind-dash mount for MSD7AL2 and 2-step. He welded -AN fittings to the radiator and configured the fire extinguisher system lines.
Ignition system and tuning: Todd King allowed the ignition system parts to function together. It uses a stock Turbo Buick crank sensor, modified PTE universal harness, an older FAST (SpeedPro vintage) B2B system, MSD7AL2 ignition, MSD Pro Power coil, MSD distributor. He performed the initial tuning on the car from the first start-up through the first full pass in May and then massaged the file in September at the Clash race.
Performance:
First full pass with three seconds of early throttle pedaling was 8.51 @ 162 mph on a warm May 2005 day at Beech Bend Raceway in Bowling Green, KY (density altitude about 3100').
After a series of growing pains, the car ran 8.8 @ 172 and 8.8 @ 169 in Lubbock (elevation 3200') in August 2005 with leaking wastegates and poor 60'. The next pass after repairs was 8.27 @ 166 a couple of weeks later. All Lubbock passes were in density altitude of 6000-6500'.
I took the car to run the Pro Outlaw class at the Clash of the Titans event in Santonio on September 3 and 4. The car made five passes and qualified #5 out of 7 cars. The weather was about 90 degrees and humid with density altitude 3000-3600' for these passes.
1) test pass before qualifying: 8.05 @ 168.1
2) first qualifying session: 8.11 @ 169.6
3) second qualifying session: 8.16 @ 166.4
4) third qualifying session: 8.01 @ 170.4
5) round one eliminations: 8.11 @ 169.3 (lost to a 7.70 @ 177, 632" BBC)
