SPEC SHEET
CarGuldstrand GSRT
OwnerSteve Platt
BlockKatech-prepped LS7 with custom dry-sump
 modifications
Displacement427ci
Compression Ratio11.0:1
HeadsKatech-prepped LS7 with PSI beehive springs
 and Katech titanium retainers
ValvesStock sodium-filled hollow-stem titanium
 (intake) and steel (exhaust), 2.20/1.615
CamshaftKatech Stage I; 244/252-deg duration at
 0.050, 0.673/0.679-in lift, 120-deg LSA
Rocker ArmsStock GM 1.8-ratio
PistonsKatech forged aluminum
CrankshaftStock forged steel, rebalanced for Katech
 pistons
RodsStock titanium, small ends rebushed with
 solid bronze bushings
Intake ManifoldStock LS7
Throttle BodyStock 90mm
Fuel InjectorsStock 42-lb/hr
Fuel PumpStock 255-gph
IgnitionStock LS7 coilpacks with Katech valve
 covers and relocation kit
Engine ManagementStock ECM tuned by Scott Brown of
 VanGordon & Brown Performance
Exhaust System1 7/8-in Kooks ceramic-coated long-tube
 headers, high-flow cats, and cross-pipe; 3-in
 Flowmaster American Thunder system with
 quad tips
TransmissionStock T6061 six-speed
ClutchMcLeod RST twin-disc
DriveshaftStock
Front SuspensionBilstein high-performance shocks, stock
 springs
Rear SuspensionBilstein high-performance shocks, stock
 springs
RearendStock with 3.42 gears
Front BrakesStock
Rear BrakesStock
WheelsHRE 540 forged aluminum; 18x10 (front),
 19x12 (rear)
Front TiresGoodyear Eagle F1, 275/35ZR18
Rear TiresGoodyear Eagle F1, 325/30ZR19
Fuel Octane91
Weight3,250 lbs without driver
Best ET/MPH11.9 seconds at 125 mph
Top Speed200 mph (estimated)
Maximum Lateral
Acceleration
1.02g
Current Mileage1,100
Miles Driven WeeklyApproximately 50
SOURCE
Guldstrand Motor Sports
912 Chestnut St.
Burbank
CA  91506