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Product Details
Dipstick, Dipstick Tube, and Steam vent pipe do not come with Long Block engines and can be purchased below if using the included oil pan
LS376/525 Long Block
LS long-blocks from Chevrolet Performance offer the core capabilities of complete crate engines at a low cost, allowing builders to finish the assembly their way. The LS376/525 long block is delivered without the intake manifold, coil packs, water pump, exhaust manifolds or other accessories.
NOTE: LS376/525 Long Block is used to build LS376/515 crate engine
TECH SPECS
Part Number: 19420386 / 19432557 / 19434648
Engine Type: LS-Series Gen IV Small-Block V-8
Displacement (cu in): 376 cu in (6.2L)
Bore x Stroke (in): 4.065 x 3.622 (103.25 x 92mm)
Block (P/N 12623967): Cast aluminum with 6-bolt, cross-bolted main caps
Crankshaft (P/N 12597569): Nodular iron
Connecting Rods (P/N 12607475): Powdered metal
Pistons (P/N 19207287): Hypereutectic aluminum
Camshaft Type (P/N 88958770): Hydraulic roller
Valve Lift (in): 0.525 intake / 0.525 exhaust
Camshaft Duration (@0.050 in): 226° intake / 236° exhaust
Cylinder Heads (P/N 12629063): Aluminum L92-style port; as cast with 68cc chambers
Valve Size (in): 2.165 intake / 1.590 exhaust
Compression ratio: 10.7:1
Rocker Arms (P/N 12669995 int): Investment cast, roll trunnion
Rocker Arms (P/N 12669993 exh): Investment cast, roll trunnion
Rocker Arm Ratio: 1.7:1
Recommended Fuel: Premium pump
Maximum Recommended RPM: 6,600
Reluctor Wheel: 58x
Balanced: Internal
INSTALLATION NOTES
• Assembly does not include any electronics, intake manifold, fuel system , ignition.
• Includes Chevy F-Body wet sump oil pan
• Intended for pre-1976 street vehicles or any off-road vehicle
• Not intended for marine applications
