Add more muscle to your ride with this ATK HP05 Chevy 383 87-95 TBI stroker engine. It offers around 320 horsepower with 395 ft.lb torque to meet the needs of power-demanding autos like pulling rigs, RVs and muscle trucks. The components are hand assembled and precisely balanced for delivering smooth performance.
- Horsepower: 320
- Torque: 395 lbs./ft.
- Block: OE roller block 4 bolt main 1pc seal
- Bore/Stroke: 4.040" x 3.750"
- Displacement: 383CI
- Crankshaft: Scat nodular iron external balance rear of crank/internal balance front of crank
- Rods: Scat I beam 5.7" rods with ARP 8740 bolts
- Pistons: Hypereutectic 9.5:1 compression
- Rings: Moly
- Camshaft: Hyd. roller
- Cam Specs: 198/210 @50 .435in/.462ex 116LSA
- Timing Chain: Double roller
- Cylinder Heads: OE TBI cast iron 67cc 1.94/1.50
- Rocker Arms: Stamped steel 1.5
- Oil Pan: Rear sump 5qt
- Oil Pump: Melling STD volume
- Weight: 410
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 383 TBI Stroker 320 HP Stage 1 Long Block Crate Engines
• Oil: Conventional/Non synthetic 10W30
• Oil Filter: Wix or K&N
• Timing: Set to factory specifications via PCM module- Must have performance chip burned
• Spark Plug Gap: .035"
• Firing Order: 18436572
• Octane: 91+
• Stall Converter: Stock
• Exhaust: 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 for their application. Some modifications to the vehicle may be required using these and or other aftermarket parts.
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