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Country of Origin: U.S.A
Assembly Plant Code: Doraville, GA
Sequential Production Number: 454674
Manufacturer: General Motors
Make: Chevrolet Truck
Model Year: 1981
GVWR Brake System: Hydraulic brake system - GVW 4001-5000
Model Series: El Camino/Caballero
Body Style: 2dr Sedan Pick-up
Engine: 1996 Stock LT1
Block Specs Displacement: 350 cubic inches, 5733 cubic centimeters, 5.7 liters Block Material: Cast Iron Main Bearings: 2-Bolt Centers and Ends (The Corvette LT1/LT4 had 4-bolt mains) Stroke: 3.48″ Bore: 4.00″ Compression Ratio: 10.4:1 Combustion Chambers: 54 cubic centimeters Factory Redline Rating: 5700 Rotations Per Minute
Bottom End Piston Material: (10159437) Eutectic Aluminum/Silicon Alloy Connecting Rod Material: (10108688) Powdered Metal Crankshaft Material: (12556307) Cast Iron
Top End and Valvetrain Cylinder Heads: (10168448) Cast Aluminum, 2 valves per cylinder/16 valves total, ~212 CFM flow (Impala SS and Caprice heads were made of cast iron*) Valve Diameter: (intake- 10241743, exhaust- 12550909) 1.94 intake, 1.50 exhaust Valve Overlap: 41* Valvesprings: (10206040) 85 lbs, seated Camshaft Specs (12551705): 205/207 duration @ 50*, .447/.459″ lift, 117 Lobe Seperation Angle Rocker Arms: (10089648) 1.5:1 Stamped Steel Timing Chain: (10128485) Powdered metal butt link
Intake and Fuel Delivery Fuel Delivery: Electronic Fuel Injection, sequential port Injector Size: (17124248) 3.0gps, 22lbs/hr speed density, 24lbs/hr mass airflow Throttle Body: 48 millimeter twin butterfly Intake Manifold: (12552137) Aluminum
Power Ratings 300bhp, 330lb-ft
Camshaft Specifications: 200/207 0.447/0.459 lift 117 LSA
Cylinder Head Flow Data
Lift Intake Exhaust .
.100 64 45
.200 127 93
.300 179 127
.400 214 145
.500 226 156
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