ATK Engines HP94-TBI Chevy 383 Custom TBI Cam, 415 HP

Engine Specifications:

• HP: 415

• TQ: 460

• 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

• Timing Chain: Double Roller

• Cylinder Heads: ATK High Performance aluminum with 2.020 in. /1.600 ex. valves

• 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 –
91048364

Recommended Components:

• Balancer: Internally Balanced

• Intake Manifold: Dual Plane

• Carburetor: 680 CFM, Vacuum Secondary, Electric Choke

• Fuel Pump:
5791002

• Distributor: HEI (Iron Gear)

• Spark Plugs: Autolite #3923

• Spark Plug Wires: 8mm

• Water Pump: OE long pump

Engine Info:

• Oil: Conventional / Non Synthetic 10W30

• Oil Filter: Wix or K&N

• Timing: 34-36 Degrees

• Spark Plug Gap: .035”

• Firing Order: 18436572

• Octane: 91+

• Stall Converter: 2200-2800

• Exhaust: 1 5/8+ Headers

Disclaimer: The parts listed are ATK’s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. It is the customer’s responsibility to verify components will work in their application. Some modifications to the vehicle may be required using these and or other aftermarket parts. ATK reserves the right to substitute parts used in engines if necessary.