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ENGINE ASM, LSX376-B15 LONG BLOCK
Product Description
Forged Internals and Six - Bolt LSX Heads That support More Boost!
For builders who want to stretch the performance of a turbocharged or supercharged combination, we’ve got just the foundation you need: Chevrolet Performance’s new LSX376-B15, featuring a durable, all-forged rotating assembly to handle up to 15 pounds of boost.
Chevrolet Performance’s engineers started with the tough LS steel Bowtie standard-deck block, added a forged-steel crankshaft, forged rods, and forged pistons, then topped off the short-block assembly with high-flow, rectangular-port LSX-LS3 six-bolt aluminum heads for supercharged and turbocharged combinations.
We deliver the LSX376-B15 without an intake manifold and other accessories, allowing you to tailor the induction system and other features to suit the forced-induction setup of your choice. It’s perfect as an economical replacement for a late-model performer or a great choice to build a high-boost powerplant for a Pro Touring classic.
*Horsepower and torque ratings were derived by GM Engineering using a normally aspirated LSX376 with LS3 EFI. Your power numbers may vary, based on induction system and componentry.
LSX376-B15 TECH SPECS
Part Number: 19417356
Engine Type: LSX-Series Gen IV Small Block V8
Displacement (cu. in.): 376 (6.2L)
Bore x Stroke (in.): 4.065 x 3.622 (103.25 x 92 mm)
Block (P/N 19260095): LSX Cast Iron with 6-Bolt, Cross Bolted Main Caps
Crankshaft (P/N 12603616): Forged Steel
Connecting Rods (P/N 12607475): Forged Powdered Metal
Pistons (P/N 19259381): Forged Aluminum
Camshaft Type (P/N 12638426): Hydraulic Roller
Valve Lift (in.): 0.560 Intake / 0.555 Exhaust
Camshaft Duration (@0.050 in.): 210° Intake / 230° Exhaust
Cylinder Heads (P/N 19201805): LSX-LS3 Rectangular Port; with “As Cast” 68-cc Chambers/6-Bolt Attachment
Valve Size (in.): 2.160 Intake / 1.550 Exhaust
Compression Ratio: 9:1
Rocker Arms (P/N 12569167 int): Investment Cast, Roll Trunnion
Rocker Arms (P/N 10214664 exh): Investment Cast, Roll Trunnion
Rocker Arm Ratio: 1.7:1
Recommended Fuel: 87 Octane
Maximum Recommended rpm: 6600
Reluctor Wheel: 58X
Balanced: Internal