The ATK HP99C Chevy 350 Vortec complete engine is a solid small block street engine built to restore dependable V8 performance with a mild performance edge. Delivering 290 horsepower and 375 ft.-lbs. of torque, it combines a roller cam-equipped OE block, hypereutectic pistons, Vortec cast iron heads, a dual-plane intake, and complete top-end components for a ready-to-run package with strong low-end torque and reliable everyday drivability. Engine Specifications: HP: 290 TQ: 375 Block: OE roller block 2 bolt main 1pc seal 1996-2000 Bore/Stroke: up to 4.060" x 3.480" Displacement: 350CI Crankshaft: OE Reground external balance rear of crank/internal balance front of the crank Rods: OE powder metal 5.7" Pistons: Hypereutectic 9.4:1 compression Rings: Moly Camshaft: Hyd. roller Cam Specs: 191/194 @50 .414in/.428ex 111LSA Timing Chain: Single Roller Cylinder Heads: Vortec cast iron 64cc 1.94/1.50 Rocker Arms: Stamped steel 1.5 ratio Oil Pan: Rear sump 5qt (not for Chevelles with steering behind crossmember, some corvettes and 62-67 chevy II's) Oil Pump: Melling STD Volume Balancer: Internally balanced – PowerBond #PB1046-N Flexplate/Flywheel: Externally balanced – Pioneer #FRA-159 Intake Manifold: ATK HP dual plane dual plane Distributor: HEI (Iron Gear) Water Pump: OE long pump Carburetor: Quick Fuel 670CFM Vacuum secondary's electric choke #BR-67256 Fuel Pump: MUST RUN ELECTRIC FUEL PUMP-NO MECHANICAL FUEL PUMP PROVISIONS Spark Plugs: Autolite #605 Spark Plug Wires: 8mm
Highlights
- OE roller block 2 bolt main 1pc seal 1996-2000
- OE Reground external balance rear of crank/internal balance front of the crank
- 9.4:1 compression
- Quick Fuel 670CFM Vacuum secondary’s electric choke
- 4.060” x 3.480”
Specifications
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Crate Engine Type: Long Block
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Engine Displacement: 350 cu. in.
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Horsepower: 290 horsepower
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Compression Ratio: 9.4:1
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Torque: 375 ft./lbs.
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Camshaft Type: Hydraulic Roller
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Cylinder Head Material: Cast Iron
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Piston Material: Hypereutectic Aluminum
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Combustion Chamber Volume: 64cc
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Camshaft Duration (.050 in): 220° intake / 224° exhaust
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Camshaft Lift (in): .414 Intake / .428 Exhaust
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Bore x Stroke (in): 4.040" x 3.480"
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Carburetor Included: Yes
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Intake Manifold Included: Yes
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Distributor Included: Yes
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Connecting Rod Material: Powdered Metal
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Valve Covers Included: Yes
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Engine Balance: External
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Cylinder Heads Included: Yes
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Rear Main Seal Style: 1-piece
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Throttle Body Included: No
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Oil Pan Included: Yes
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Timing Cover Included: Yes
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Water Pump Included: Yes
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Harmonic Balancer Included: Yes
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Flexplate Included: No
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Flywheel Included: No
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Air Cleaner Included: No
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Spark Plugs Included: Yes
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Spark Plug Wires Included: Yes
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Computer Included: No
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Wiring Harness Included: No
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MFG. Part #: HP99C
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GTIN Code: 653517524943
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Recommended Fuel: 91 Octane
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Brand: ATK Engines
