Engine Specifications: HP: 390 TQ: 420 Block: OE roller block 4 bolt main 1pc seal 1996-2000 Bore/Stroke: 4.040” x 3.480” Displacement: 350CI Crankshaft: OE Reground external balance rear of the crank/internal balance front of the crank Rods: OE powder metal 5.7” Pistons: Hypereutectic 10:1 Compression Rings: Moly Camshaft: Hyd. Roller Cam Specs: 220/224 @50 .528in/.536ex 110LSA 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 Valve Covers: Cast aluminum powder coated black “Chevrolet: embossed with match PCV valve and push in breather Flexplate/Flywheel: Externally Balanced – Pioneer #FRA-159 Air Cleaner: 14”x 3” Super Flow air cleaner system with washable filter (drop base lower) Balancer: Internally Balanced – PowerBond #PB1046-N Intake Manifold: ATK dual plane intake Distributor: Black HEI (Iron Gear) Water Pump: OE long pump Thermostat Housing: Chrome with a 180 degree thermostat Carburetor: Quick Fuel 680CFM Vacuum secondary’s electric choke #HR-680 Fuel Pump: Holley mechanical 110GPH #12-327-11 Fuel Line: Dual inlet AN Stainless Hose from pump to carb Spark Plugs: Autolite #3923 Spark Plug Wires: 8mm Engine Info: Oil: Conventional / Non Synthetic 10W30 Oil Filter: Wix or K and 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.
Highlights
- Oil: Conventional / Non Synthetic 10W30 with Comp Cam zinc additive #159 for first 3000 miles
- Oil Filter: Wix or K&N per application
- Timing: 34-36 Degrees
Specifications
-
Engine Displacement: 350 cu. in.
-
Cylinder Head Material: Aluminum
-
Intake Manifold Included: Yes
-
Oil Pan Included: Yes
-
Timing Cover Included: Yes
-
Harmonic Balancer Included: Yes
-
Flexplate Included: No
-
Flywheel Included: No
-
Material Type: Iron
-
MFG. Part #: HP89CBLK
-
GTIN Code: 00653517724770
-
Notes: Features black valve covers, PCV valve, breather, and air cleaner assembly with washable/reusable filter.
-
Sold in Quantity: Each
-
Brand: ATK Engines
