BluePrint Engines GM 350 C.I.D. 260 HP TBI Long Block Crate Engines

BluePrint Engines GM 350 C.I.D. 260 HP TBI Long Block Crate Engines have been tested in a factory-equipped 1987-95 OEM 5.7 truck with factory torque converter, fueling system, and ECU, while using 87 octane fuel. These increased horsepower, replacement long blocks are designed specifically to install in 1987-95 TBI trucks without any tuning or fuel system upgrades required. Recommended spark plugs are ACDelco CR43TS with .035 in. gap. Customers will re-use their existing intake manifold, ECU, and fuel system from '87-95 truck engine. This is an excellent upgrade for your truck, gaining roller cam, 4-bolt main, and horsepower; otherwise retaining stock components, such as torque converter and exhaust. * SPECIFICATIONS: HP and Torque: 260 hp / 342 lbs.-ft. Gain of up to 50 hp and 42 lbs.-ft. vs factory Compression Ratio: 9.1:1 1987-1995 GM Iron Heads Hydraulic Roller Cam Cast Steel Crankshaft Hypereutectic Pistons * BLOCK: NEW BluePrint Block 4-Bolt Main 4.000 in. Bore 1-Piece Rear Main Seal Mech fuel pump provision: Yes Passenger Side Dipstick Drilled and tapped for clutch linkage * ROTATING ASSEMBLY: Cast Steel Crankshaft 3.480 in. Stroke Forged 5.700 in. connecting rods Hypereutectic pistons Internal Front/ External Rear * CYLINDER HEADS: 1987-1995 GM Iron Cylinder Heads 64cc chamber 1.94 in. intake/1.50 in. exhaust valves * CAM SPECS: Cam Type: Roller .447 Intake, .459 Exhaust 201 Intake / 208 Exhaust duration At .050 - 117 degree lobe separation * IGNITION TIMING: Controlled by OEM Computer * ALSO INCLUDES: New valve covers Oil pan Timing cover Harmonic Balancer Dyno test results shipped with engine * WARRANTY: 30 month / 50,000 mile * NOTES: Not for use in pollution-controlled vehicles Show Less