Jim Neuefeldt, better known in the racing world as Parish, has built one of the most iconic turbocharged trucks around—a twin turbo LS1-powered Silverado capable of running deep into the 10s, with even more potential waiting to be unlocked. This isn’t just a daily driver with bolt-ons—this Silverado is a purpose-built beast that mixes serious horsepower with reliable MegaSquirt engine management.
Current Mod List
-
Dual GTS70 turbos (rated at 850 hp each)
-
Twin Tial 44 mm wastegates
-
Twin Turbonetics Raptor blow-off valves
-
NX nitrous kit (used just off the line for quicker spools)
-
Combination Motorsports built 408ci LS
-
Calies crank
-
Oliver rods
-
JE pistons
-
Comp cam
-
AFR heads
-
-
Finishline Transmissions-built 4L80E
-
Nitto drag radials on all four corners (305/45/18s)
-
MegaSquirt 1 PCBv3 ECU running MSnS-E firmware
-
Controlling fuel, nitrous, and fans
-
-
Onboard wideband O2 sensor
-
Blitz boost controller
Drag Week Success
Parish’s Silverado isn’t just a dyno queen—it has proven itself where it matters most: on the track. At Drag Week 2006, Parish dominated the 11.0 index class with an average ET of 11.0004 seconds. Even more impressive? This was just after installing a new intake manifold designed to handle more boost than the stock plastic unit. With more tuning and refinement, Parish’s truck has its eyes on breaking into the 9-second range—and it has all the hardware to get there.
Stay tuned for dyno videos and track footage as Parish continues to push the limits of what a street-driven Silverado can achieve.