Twin Turbo ZO6 Components- Engine-

The base of the engine is the World Products Warhawk LS7x block with 6-bolts per cylinder.

Block Info-

WORLD PRODUCTS | WARHAWK LS7X BLOCK

Forged LS7 crankshaft, Callies connecting rods, and CP pistons with ceramic coated tops and friction reducing coated skirts. 9.5-1 compression ratio. H-series bearings with coating. Stainless steel PVD coated top ring and ductile iron second ring.

The cylinder heads are ET performance CNC ported LS7 6-bolt castings with stainless valves, dual PSI valvesprings and Xceldyne titanium retainers. Comp hydraulic roller cam, morel lifters, smith bros pushrods, harland sharp modified LS7 rockers. ARP head studs and Fel-pro multi layer MLS gaskets.

The oiling system was upgraded with a Johnsons high performance external 3 stage belt driven pump. This pump scavenges the turbo oil and is an additional scavenge stage to the engine, pulling oil from the bottom of the pan and returning it to the dry sump reservoir. This system provides super efficient scavenging ensuring the reservoir is always full.

Turbo System-

APS twin turbo system. The exhaust manifolds and turbo housings were ported and also JET HOT ceramic coated for heat retention and a long lasting finish. Intercooler air ducting was powdercoated black and the fuel rails were anodized black. This system uses Garret Ball Bearing GT35r turbochargers which have instant response. The downpipes, h-pipe and exhaust system are polished stainless steel.

Turbo system information- Corvette Performance - North American Specification

Driveline-

The driveline of this car was also upgraded to handle the horsepower reliably. It has a McLeod RXT dual disc clutch with MIBA lining. This clutch still has light pedal effort and is very smooth to drive. The clutch is contained by a Quick Time performance SFI approved bellhousing. The original T56 transmission was replaced with the upgraded 2008 ZO6 T-6060 trans which was built by RPM transmissions to level 5 specifications. The driveshaft shop supplied an upgraded driveshaft, 300m differential output shafts and 300m CV axles with upgraded 31spline hubs.

Fuel system and tuning-

The APS extreme performance fuel system inclued twin dual in-tank fuel pumps, twin teflon lined braided steel fuel feed lines and a stainless steel fuel pump carrier. I installed upgraded bosch motorsport 100lb/hr fuel injectors.

The factory LS7 pcm was carefully dyno-tuned with HP tuners 2.5bar speed density operating system. What this means is that the car automatically adjusts for any given boost level on the fly. This enables perfect integration with the Eboost 2 boost controllers gear referencing function. The car was fine-tuned on the street using the HP tuners software and permanantly installed Dynojet wideband air/fuel monitor.

Misc details-

Fluids used are 5w-40 Mobil 1synthetic oil, Royal Purple Synchromax transmission fluid, Royal Purple synthetic gear lube, Motul brake/clutch fluid.

Dynojet wideband air/fuel monitor wired for HP tuners interface.

Cooling system was upgraded with EVANS high flow mechanical water pump, high flow thermostat, and fan programming.

Eboost2 boost controller installed above navigation system in left hvac duct. LED shift light is in the same mount as the Eboost2. Gear referenced boost control is user selectable and knows each gear as the shift linkage activates microswitches wired to the controller.

Alternator was upgraded with 250amp high output unit.

Brake upgrades include Hawks performance ceramic pads, stainless braided brake lines, Motul brake fluid

Base boost is 5.5psi and 643 rear wheel horsepower. (approx 700 crank horsepower)
Max boost on 93 octane pump gas is 13psi and 854 rear wheel horsepower (approx 925 crank horsepower)
1000+rear wheel horsepower is achievable with 16+psi and race fuel (approx 1200 crank horsepower).

If gear referenced boost control is selected through the controller it works like this-

1st gear 700hp
2nd gear 800hp
3rd gear 1000hp
4th/5th gear 1200hp

Increasing power per gear like this is a tremendous help in tractability.

This car was taken to the dragstrip for testing and fine tuning.

It ran 10.6 @141mph on the stock street tires launching with 5.5psi in1st gear increasing to a peak of 11psi boost in 4th gear on 93 octane.

With the addition of the included drag radials on extra wheels the car ran 10.3@ 152mph on 100 octane race fuel, 16psi boost, 11deg timing. I was kicked out of the track due to lack of safety equipment after that run but there is much more left in it.