383ci LT1 Boosted Competition Short Block Engine $4,999 - The 383 Boosted Competition Short Block is a good foundation for performance engines builds up to 750hp running up to 15 psi of boost. Short Block Components: Comp Cams Hyd Roller Camshaft (+$525) Johnson OE Hyd Roller Lifters (+$225) Cloyes Extreme Duty LT4 Roller Timing set (+$250) Melling HV Oil Pump Kit (comes with pump, pick up, ARP Stud and HD Drive) (+$95) Fel Pro Oil Pan Gasket (+$40) Fel Pro Rear Main Seal (+$35) Fel Pro Timing Cover Gasket Kit (+$25) Recon GM LT1 Timing Cover (+$100) Factory Oil Pan (+$145)Top End Components: AFR 195cc CNC Ported heads (Upgraded PAC Valve Springs and ARP 7/16 Rocker Studs) (+$2,250) ARP Head Bolt Kit (+$85) Fel Pro Performance Head Gaskets (+$95) BTR 5/16 Hardened Pushrods (+$115) Comp Cams Ultra Pro Magnum Roller Rockers (1.6 Ratio, for 7/16 Stud) (+$450)Optional Components Ported LT1 Intake (sold outright no core) (+$450) Fel Pro Performance Intake Gaskets (+$35) ARP SS Intake Bolt Kit (+$45) Bosch 36lb Fuel Injectors (+$450) BBK 58mm Throttle Body (+$350) TCI SFI Flex Plate (+$125) Crank Hub, Keyed (+$140) Dyno Break In Service (+$850) Product total Options total Grand total 383ci LT1 Boosted Competition Short Block Engine quantity Add to cart Categories: LT1-LT4 Performance Engines, LT1-LT4 Performance Short Blocks ENGINE SPECIFICATIONS Block: GM LT1 Cast Iron Block Deck to Match Pistons Bored 4.030” Honed with Torque Plates and Pressure Washed New Durabond Cam Bearings Installed Billet 4-Bolt Main Caps Installed, Line Hone ARP Main Studs Pistons: Mahle Forged Boosted Pistons Bearings: Clevite H-Series Main and Rod Bearings Crank: Scat 4340 Forged Steel 3.750” stroke Rods: Scat 4340 Forged H-Beam 5.700” length ARP Rod Bolts Rings: Mahle plasma moly Main and Rod Bearings