THROWDOWN Holley LS Fest - 2003 Chevy Silverado SS

Blue Blur

Harley CamilleriMay 1, 2012
Photo 2/3   |   After garnering a Third Place finish in the autocross, Jason Stephenson let loose on his SS Silverado and squeezed the nitrous hard to grab racing premier spot. In full street trim and being the longest wheelbase in the THROWDOWN, Jason's truck blasted to the highest trap speed.

4th Place
Blazing the quarter-mile with the fastest time and overall trap speed, Jason Stephenson proved that a bigger truck could compete with the rest of them. With AWD, an LS3, and plenty of go-fast spray, his Chevy was scorching the track and leaving everyone feeling blue. Unfortunately for the Silverado SS, Jason squeezed on the nitrous too hard and experienced a backfire during the drag race portion of our contest. The explosion was big enough to melt down a spark plug and actually meld some of the plug’s porcelain to a piston causing a knock. Jason’s weekend was finished but still managed enough points to hang onto Fourth Place even with two DNFs. Rolling 22-inch wheels, Jason could have easily shaved off some tenths with a smaller and stickier tire, but thanks to AWD, the SS was still a track terror. He tells us he will return with a faster combination next THROWDOWN, and we look forward to seeing the SS lay down even quicker ETs.
Year/Make/Model: '03 Chevy Silverado SS
Owner and City/State: Jason Stephenson | New Castle, Indiana

Photo 3/3
Engine
Type: 6.2L LS3
Heads: LS3 with Patriot Gold valve springs
Cam: Comp .581/.592 114 LSA
Induction: Homemade cold-air intake with NOS plate with 200hp jets
Exhaust: OBX long-tube headers with 3-inch single Borla
Cooling: Electric fan conversion from '05-and-newer Silverado
Fuel System: Walbro 255lph in tank pump, 33-pound injectors
Ignition: MSD 8.8 plug wires. NKG TR6 spark plugs
Engine Management: Factory computer with HP Tuners
Output: 515 awhp (est)
Built by: Jason Stephenson
Drivetrain
Transmission: RPM Level VII 4L65E. Precision Industries 3,200-stall converter
Rearend: Detroit Tru-Trac, 4.10 micro-polished gears, TA Performance diff cover
Chassis
Front suspension: Energy Suspension polyurethane control arm bushings and sway bar endlinks. Belltech 2-inch drop spindles, Belltech shocks
Rear suspension: Belltech 2-inch drop shackles, Belltech shocks
Brakes: R1 Concepts cross-drilled and slotted rotors
Wheels & Tires
Wheels: 22x10-inch Boss 313
Tires: Nitto 420S 305/40R22
Special Thanks: Rodney at RPM Transmissions for use of the shop and tools to make this project happen.
Autocross Time: 50.10 sec
Quarter-Mile Time: 11.87 @ 114.42 mph (Highest Trap Speed)
Speed Stop Time: DNF
Slalom Time: DNF
Shown 'n' Shine: No points earned
- OF

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