Specifications

• 4-bolt main with 2-piece rear main seal
• Nodular iron crankshaft
• 4.000' bore x 3.480' stroke
• Internal balance
• LT1/LT4 powdered metal connecting rods
• Cast aluminum pistons (dished)
• 8.5:1 compression ratio
• Hydraulic flat tappet cam (.383"/.401" Lift, 194 / 202 Duration @ .050", and 112° lobe separation)
• Cast iron cylinder heads with 76cc chambers
• 1.940' Intake / 1.500' Exhaust valves
• 1.250' diameter valve springs
• 1.5:1 ratio rocker arms
• 3/8' pressed-in rocker studs
• Block is compatible with left or right side oil dipstick (Requires Plug for Unused Side - sold separately) - p/n 809-14091563 left side plug; or p/n 809-9421743 right side plug
• 4-quart oil pan
• Oil pump, oil pump pickup and oil pump drive shaft installed
• Includes timing tabs for a 6-3/4" or an 8" balancer (balancer not included)
• Recommended spark plug: 14mm thread, .460" reach, 5/8" hex, tapered seat, projected tip (AC Delco p/n 065-R45TS, Autolite p/n 417-144)
• Not Intended for Marine Use
• Requires p/n 809-19299222 or p/n 555-23605 Oil filter adapter (not included)
• Not Intended for Marine Use
• No core charge 
  
  Major Components NOT Included:
• Starter
• Flexplate/Flywheel
• Harmonic Balancer & Bolt
• Water Pump
• Intake Manifold
• Carburetor
• Fuel Pump
• Fuel Pump Pushrod
• Distributor
• Spark Plugs & Wires
• Oil & Filter
• Gaskets
• Motor Mounts