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ATK Chevy 350CI 87 Octane Engine 365HP Mid Dress HP91M

Item #22646

ATK Chevy 350CI 87 Octane Engine 365HP Mid Dress HP91M
HP91M ATK Chevy 350CI 87 Octane Mid-Dress Engine 345HP
* * FREE SHIPPING on ATK Engines. This item ships directly from the manufacturer and is not available for store pickup. Some engines are made-to-order or can be backordered. Delivery can be delayed up to 4 to 5 weeks but usually ship within one week
$3,802.48
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Experience the power of a muscle car in your old ride by using this ATK HP91M Chevy 350CI 87 Octane Engine 345HP Mid Dress. It is hand built and balanced by experts with quality parts that promise reliable performance. 365 horsepower and 400 ft.lb torque offer a monstrous boost that is perfect for the street or strip.

Engine Specifications:

  • Horsepower: 365
  • Torque: 400 lbs./ft.
  • Block: Seasoned OE 4 Bolt Main 1pc Seal Roller Block P/S Dipstick
  • Bore/Stroke: 4.040 x 3.480
  • Displacement: 350 C.I.D.
  • Crankshaft: OE Cast Crank 3.480" Stroke Externally Balanced Rear/Internal Front 1pc.
  • Connecting Rods: OE Powder Metal 5.700" Stock Bolts
  • Pistons: Hypereutectic Dished
  • Piston Rings: Moly Rings
  • Compression Ratio: 8.9:1 Compression
  • Camshaft: Hydraulic Roller
  • Camshaft Specifications: 220/224 @050 .528in/.536ex 112LSA
  • Camshaft Bearings: Installed & Clocked to OEM Position
  • Cylinder Heads: ATK American Made Aluminum 64cc/185cc 2.02/1.60
  • Freeze Plugs: Brass Installed & Sealed
  • Rocker Arms: Stamped Steel 1.6 Ratio
  • Oil Galley Plugs: Installed & Sealed
  • Oil Pan: OE 5qt.
  • Weight: 375

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.



Don't forget the engine paint!
Engine Paint

Contents

ATK High Performance GM 350 365 HP Stage 2 Long Block Crate Engines


Specifications

Engine Information:

• Oil: 10W30
• Oil Filter: Wix or K&N Recommended Per Your Application
• Fuel Delivery: Quick Fuel Carburetor 680cfm #HR-680-VS
• Intake Manifold: Weiand Stealth Dual Plane #8150
• Spark Plugs: Autolite #3923
• Spark Plug Gap: .035"
• Harmonic Balancer/Damper: POWERBOND Internally Balanced 8" #PB1046-N
• Flex Plate / Flywheel: Externally Balanced 168 Tooth
• Timing: 34-36 Degrees Total
• Water Pump: Long Water Pump
• Firing Order: 1 8 4 3 6 5 7 2
• Exhuast: 1 5/8 Headers
• Fuel Pump: Holley 110GPH Mechanical #12-327-11
• Fuel: 91+ Octane
• Ignition: MSD HEI #8362
• Automatic Transmission Stall Converter: 2200-2500


Accessories

Recommended Components:

• Carburetor: Quick Fuel 680cfm vacuum secondary electric choke #793-HR-680-VS
• Fuel Pump: Holley Mechanical 110gph #510-12-327-11
• Spark Plugs: Autolite #417-3923
• Spark Plug Wires: 8mm

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 Instructions

Shipping is free and lift gate will be provided.


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