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Build Some Power With a '92-'96 Gen II LT1

UPGRADE LIST
DESCRIPTION PN PRICE
Ignition
MSD cap and rotor kit 8481 (early style) $170.06
84811 (later style)
Cooling
Meziere water pump WP118 211.69
Intake
Edelbrock Performer RPM LT1 7107 399.95
LT4 7109 464.95
Cylinder heads
Trick Flow Specialties TFS-30400010 1,409.95 sold in pairs, assembled.
Bare heads available.
Edelbrock Performer 61909 539.50 sold individually, assembled.
Bare heads available.
Air Flow Research 180 cc 0908 1,824.00 sold in pairs, assembled
Scoggin-Dickey CNC-ported SD3287 1,082.50 sold individually, assembled
LT4 cylinder heads

COMPARISON
LT1 LT4
Crankshaft Cast-iron Cast iron with rolled and undercut fillets
Rocker arms 1.5:1-ratio stamped steel 1.6:1 forged aluminum roller
Timing chain Link-style powdered-metal sprockets Roller-style steel sprockets
Valves:
Intake 1.94 2.00 hollow-stem
Exhaust 1.50 1.55 sodium-filled
Valvesprings Round section Oval section wire
Compression ratio 10.4:1 10.8:1
Camshaft:
Duration @ 0.050 inch 205/207 203/210
Lift 0.447/0.459 0.476/0.479
Lobe separation 117 degrees 115 degrees
Intake runner 170 cc 195 cc
Airflow 212 cfm 240 cfm
Horsepower 300 @ 5,000 rpm 330 @ 5,800 rpm
Torque 340 lb-ft @ 4,000 rpm 340 @ 4,500 rpm
Redline 5,700 rpm 6,300 rpm

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