376ci LT1-LT4 NA Short Block Engine (New) $6,999 - The LT1/LT4 376ci competition short block uses a new GM LT1/LT4 block with 4.070″ bore to produce the 376CI. This short block provides a strong foundation for NA engines making up to 750hp and can be customized to meet your needs. 376ci LT1-LT4 NA Short Block Engine (New) quantity Add to cart Categories: LT1-LT4 Engines, LT1-LT4 Short Blocks ENGINE SPECIFICATIONS Block: New GM LT1/LT4 Aluminum Block Honed with Torque Plates Bore Size 4.070″ Zero Decked Line Honed with ARP Main Studs Blueprinted Oil Clearances All New GM Block Plugs Installed New Durabond Cam Bearings Installed Pistons: Mahle Motorsports Forged Pistons with skirt coating Rings: Mahle Plasma Moly Bearings: King H-Series Main and Rod Bearings Crank: GM Factory Forged Steel Stroke 3.622” Wet Sump (Dry Sump options available) Internally Balanced Front and Rear Rods: Callies Comp Star 4340 Forged Steel H-Beam 6.125” Length ARP 2000 Rod Bolts