ATK High Performance

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Mid Dress Engine: atkhp.com/prod...
Complete Engine: atkhp.com/?s=h...
EFI Complete Engine: atkhp.com/prod...
Black Signature Series Engine: atkhp.com/prod...
Polished Signature Series Engine: atkhp.com/prod...
Engine Specifications:
• HP: 425
• TQ: 470
• Block: OE roller block 4 bolt main 1pc seal 1996-2000
• Bore/Stroke: 4.040” x 3.750”
• Displacement: 383CI
• Crankshaft: Scat Nodular Iron external balance rear of crank/internal balance front of the crank
• Rods: Scat I Beam 5.7” Rods with ARP 8740 Bolts
• Pistons: Hypereutectic 9.7:1 Compression
• Rings: Moly
• Camshaft: Hyd. Roller
• Cam Specs: 220/224 @50 .528in/.536ex 110LSA
• Timing Chain: Double Roller
• Cylinder Heads: Dart SHP American Made aluminum 64cc/180cc 2.02/1.60
• Rocker Arms: Billet aluminum roller rockers 1.6 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
• Flexplate/Flywheel: Externally Balanced - Pioneer #FRA-159 (with Scat kit)
• Balancer: Internally Balanced - PowerBond #PB1046-N
• Intake Manifold: Weiand stealth dual plane #8150
• Distributor: HEI (Iron Gear)
• Water Pump: OE long pump
• EFI System: Fitech Go EFI 4 600HP (throttle body, wire harness and hand held unit included)
• Fuel Pump: Not Provided - must run electric pump or mechanical fuel pump with Fitech Fuel Command Center
• Spark Plugs: Autolite #3923
• Spark Plug Wires: 8mm