Scott Miller knows it takes a truck to haul, so to his factory 355 small-block he's added both a supercharger and a dose of nitrous. With the supercharger, better breathing cylinder heads, and a high-lift cam (minus the funny stuff) the combo has produced over 500 horses and 500 lb-ft on the dyno. To feed those extra horses, he improved the fuel system with parts from Holley. What's especially fun is that on the track the 4,000-pound pickup stops the clocks in the low-12-second zone.
Scott Miller
'90 Silverado
Specs
Displacement - 355 ci
Block - Factory Chevy four-bolt main
Bore x Stroke - 4.030 x 3.48 inches
Compression - 8.5:1
Rod - 5.71-inch Trick Flow I-beam
Induction
Injection - Holley 670 TBI
Camshaft Specs
Crane Cams hydraulic 240 Compucam
Duration @ 0.050 - 210/216
Lobe separation - 114
Cylinder heads
Trick Flow 175cc
Valve size - 1.94/1.50-inch
Rockers - Crane Gold (narrow body), 1.5:1
Power Adder
Nitrous, 125hp wet shot, Whipple Supercharger 6lb boost
Drivetrain
Transmission - Chevy 4L80E
Converter - The Converter Shop 2600 Lockup converter
Rearend - '92 Chevy SS 454 factory 14-bolt
Gear - 4.10 w/traction lock
Rear rubber
P275/60R15 Mickey Thompson ET Street Radial
Numbers
Peak Horsepower - 511 (motor)
Peak Torque - 503
Performance - 12.32 @ 116 mph (motor)
60-foot - 1.76
