Complete building your muscle car or workhorse with this ATK Chevy 489 Stroker Engine. Boasting a massive 565 horsepower and 595 lb/ft torque, this engine will leave you fully satisfied with its tremendous power and acceleration. Forged I-beam connecting rods and forged pistons make this crate engine highly reliable and durable.
- Horsepower: 565
- Torque: 595 lb/ft
- Block: Seasoned OE 4 Bolt Main 1pc Seal Gen V 1991-1995
- Bore/Stroke: up to 4.310 x 4.250
- Displacement: 489 C.I.D.
- Crankshaft: Scat Nodular Iron 4.250" Stroke Internally Balanced 1pc
- Connecting Rods: Scat 4340 Forged I Beam 6.385" ARP 8740 Bolts
- Pistons: Forged Small Dome
- Piston Rings: Moly Rings
- Compression Ratio: 10.1:1 Compression
- Camshaft: Hydraulic Roller
- Camshaft Specifications: 237/245 @050 .635in/.640ex 112LSA
- Camshaft Bearings: Installed & Clocked to OEM Position
- Cylinder Heads: Edelbrock Aluminum E-Street 110cc/290cc 2.19/1.88
- Freeze Plugs: Brass Installed & Sealed
- Rocker Arms: Billet Aluminum 1.7 Full Roller
- Oil Galley Plugs: Installed & Sealed
- Oil Pan: OE 5qt.
ATK specializes in muscle. With the highest quality internal parts and Dyno Proven combinations of every engine built, ATK is able to add the most bang for your buck and back it up with an industry leading warranty.
ATK High Performance GM 489 Stroker 565 HP Stage 1 Long Block Crate Engines
• Oil: 10W30
• Oil Filter: Wix or K&N Recommended Per Your Application
• Fuel Delivery: Quick Fuel Carburetor 780cfm #HR-780-VS
• Intake Manifold: Edelbrock Performer RPM Dual Plane #7161
• Spark Plugs: Autolite #3923
• Spark Plug Gap: .035"
• Harmonic Balancer/Damper: Professional Products Internally Balanced 8" #80004
• Flex Plate / Flywheel: Internally Balanced 168 Tooth
• Timing: 34-36 Degrees Total
• Water Pump: Long Water Pump
• Firing Order: 1 8 4 3 6 5 7 2
• Exhuast: 2 Headers
• Fuel Pump: No Mechanical Fuel Pump Provisions. Must Run Electric
• Fuel: 91+ Octane
• Ignition: MSD HEI #8362
• Automatic Transmission Stall Converter: 2500-3200
• Balancer: Internal balance 8"
• Carburetor: Quick Fuel 780cfm vacuum secondary electric choke #793-HR-780-VS
• Distributor: HEI (iron gear)
• Flexplate: Internal balance
• Fuel Pump: No mechanical fuel pump provision, must run an electric pump
• Intake Manifold: Edelbrock Performer RPM dual plane #350-7161
• Spark Plugs: Autotile #417-3923
• Spark Plug Wires: 8mm
• Water Pump: OE long pump
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 for their application. Some modifications to the vehicle may be required using these and or other aftermarket parts.
Shipping is free and lift gate will be provided.
Eastwood Offers Free Lifetime Technical Support
Attention California Residents - Proposition 65
WARNING - Cancer and Reproductive Harm - www.P65Warnings.ca.gov