Stenod Performance Projects Page -  Kevin's Twin Turbo LS1Tech Extreme Modified Project Car

Kevin's car was an exercise in design and engineering for a sweet twin turbo street car. The total package was designed around the rules for the LS1Tech Drag Racing Series for the Extreme Modified class. The rules are fairly simple with regards to the power adder of choice. In Kevin's case his twin turbo car is limited to a pair of 60mm Precision GT40 turbos (Okay, so they actually measure a shade above 58mm). The essence of the packaging was to keep the car a budget buildup with all of it's streetable characteristics.

The car still has it's factory heat, stereo, power windows, locks and even the carpet. It's far stretched from a full on race car despite the use of Kirkey racing seats and the TH400 transmission. Weighing in at 3500 pounds the car is capable of high 8 second passes in the mid 150 MPH territory. It's the first car in the Extreme Modified class to reach the 8's in competition. With the fall weather approaching more cold weather testing will be performed to see if the car can pick up some ET with the lower air temperatures.

Engine
347 c.i. Solid Roller LS1 built by Stenod Performance
Stock GM LS1 crank
Howards steel rods
Mahle forged turbo pistons
Ported 6.0 truck heads
Stenod Performance custom ground turbo cam
Comp Solid Lifters
Trend Pushrods
T&D 1.7 Rockers
GM Peformance Carb Intake
90mm Accufab Throttle Body

Turbo Kit
Stenod Performance Custom Twin Turbo Kit
Twin Precision GT-40 Turbos
5.3 Truck Manifolds turned backwards
Twin Tial 38mm Wastegates
Tial 50mm Blow Off Valve
Twin 3" Downpipes w/ merge to 4"
4" Exhaust w/ 4" Dynomax Bullet dumped before axle
Stenod Performance Custom Air-to-Air Intercooler

Drivetrain
Rossler TH-400
Ross-lock Trans Brake
Neil Chance Converter
Billingsley Fabricated 9” narrowed 3”/side
Strange Aluminum Center
Strange 40-spline Gun-drilled Axles
Strange Spool w/ 3.70 gear

Fuel System
Weldon 2025 Pump
96# Injectors
Aeromotive Pro Series Regulator
-10 Feed and Return Lines

Rollcage
Stenod Performance Custom 10 point Cage

Wheels
Weld Alumistars in front w/ MT ET Fronts
Weld Magnum 2.0 in Back w/ MT 28x10.5 W ET Drag

Performance
Best ET - 8.99 @ 153.7
Est. HP at Flywheel 1000+