LSX376B15

LSX376-B15 6.2 All Forged Boost Ready Long Block Crate Motor

Product Code: 19417356
Dispatch Time: 40

£10,412.50 EX VAT

£12,495.00 INC VAT

Product Overview:

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.

The LSX376-B15 is delivered 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 system. Your power numbers may vary, based on induction system and componentry.

This Product is a USA Special Order, and will take around 6 - 8 weeks to arrive, call to discuss options

More Information

Product Details Specification

Product Details

Installation Notes:

Assembly does not include any electronics
Intended for pre-1976 street vehicles or any off-road vehicle
Not intended for marine applications
Requires LSX Ignition Controller (P/N 19355418) for carbureted applications
LSX eight-bolt crank flange
Assembly shipped without intake manifold or oil pan (dust shield installed for shipment)
Recommended max boost - 15 psi

Engine Break-In Procedure

Use only engine oil that meets dexos1 specifications. For track events or competitive driving, use Mobil 1 15W-50 engine oil. Fill the engine with oil and follow the proper engine priming procedure. Also check and fill as required any other necessary fluids such as coolant, power steering fluid, etc.

Start the engine and listen for any unusual noises. If no unusual noises are noted, run the engine at approximately 1000 RPM until normal operating temperature is reached. The engine should be driven at varying loads and conditions for the first 30 miles or one hour without wide open throttle (WOT) or sustained high RPM accelerations. Run five or six medium throttle (50%) accelerations to about 4000 RPM and back to idle (0% throttle) in gear. Run two or three hard throttle (WOT 100%) accelerations to about 4000 RPM and back to idle (0% throttle) in gear.

Change the engine oil and filter. Inspect the oil and the oil filter for any foreign particles to ensure that the engine is functioning properly. Drive the next 500 miles (12 to 15 engine hours) under normal conditions. Do not run the engine at its maximum rated engine speed. Also, do not expose the engine to extended periods of high load. Change the oil and filter again, inspect the oil and oil filter for any foreign particles to ensure that the engine is functioning properly.

Specification

Engine Type: LSX-Series Gen IV Small-Block V-8
Displacement: 376ci (6.2L)
Bore x Stroke: 4.065'' x 3.622'' (103.25mm x 92mm)
Block: LSX cast-iron with six-bolt, cross-bolted main caps
Crankshaft: Forged steel
Connecting Rods: Forged powdered metal
Pistons: Forged aluminum
Camshaft Type: Hydraulic roller
Camshaft Lift: .560'' intake / .555'' exhaust
Camshaft Duration (@.050 in.): 210° intake / 230° exhaust
Cylinder Heads: LSX-LS3 rectangular port; with ''as cast'' 68cc chambers and 6-bolt attachment
Valve Size: 2.160'' intake / 1.550'' exhaust
Compression Ratio: 9.0:1
Rocker Arms: Investment cast, roller trunnion
Rocker Arm Ratio: 1.7:1
Recommended Fuel: Regular pump (87 octane)
Maximum Recommended RPM: 6600
Reluctor Wheel: 58x
Balanced: Internal

Pipercross

AEM