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LSX376-B8 Crate Engine 19171049 19260831
Description
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19171049 Replaces the 19171049 LSX376 450HP
The LSX376-B8 is designed for lower-boost applications, up to about 8 pounds. That’s suitable for most supercharger and turbo kits that are designed to be used with production-based applications.
GM Performance Parts takes the economical LSX Bowtie block and combines it with the LS3’s high-flow L92-style heads and mostly internal components (we swap the pistons for forged parts), to create the affordable, high-revving LSX376 crate engine.
It represents the essence of LS performance—exceptional airflow capability in straightforward packaging that delivers huge performance without a power-adder.
We deliver the LS376 without an intake manifold (and other accessories). So, whether you top the engine with a carburetor or production-style injection system, it’s suitable for your street rod, ’57 Chevy or ’71 Camaro —be it on the street or strip.
Our horsepower and torque ratings are based on using the productionstyle injection system. More power can be realized by swapping that for one of our carburetor intakes and a well-tuned Holley four-barrel.
See reference guide P/N 88959384 for installing an LS engine in an older car.
NOTE: Due to the number of application variations, the LSX376 crate engine is supplied with a dust shield instead of an oil pan. See the LS Engine Components section for production-style oil pan choices. Also, the LSX376 valve covers do not include provisions for mounting the ignition coil brackets. Aftermarket or custom relocation brackets must be used.
LSX376 TECH SPECS
Part Number: 19171049
Engine Type: LSX Series Gen IV Small-Block V-8
Displacement (cu in): 376 cu in (6.2L)
Bore X Stroke (in): 4.06 x 3.62 (103.25 x 92 mm)
Block (P/N 19243171): LSX cast-iron with 6-bolt. cross-bolted main caps.
Crankshaft (P/N 12597569): Nodular iron
Connecting Rods (P/N 12607475): Powdered metal
Pistons (P/N 12166957): Forged aluminum
Camshaft Type (P/N 12603844): Hydraulic roller
Valve Lift (in): 0.551" intake / 0.522" exhaust
Camshaft Duration (@0.050 in ): 204deg intake / 211deg exhaust
Cylinder Heads (P/N 12615879): Aluminum L92 style port, with "as cast" 68cc chambers
Valve Size (in): 2.16 Intake / 1.59 exhaust
Compression ratio: 9.0:1
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: 92 octane
Maximum Recommended RPM: 6600
Retuctor Wheel: 58X
Balanced: Internal
Can be use with any of the following components
19244035 Intake Manifold
19244037 Intake Manifold
12610434 Intake Manifold
Oil Pan P/N 19212593
19244043 Supermatic 4L70-E Transmission
LSX376 completion Kits
electronic fuel injectionLS3 intake manifold 12610434
Ignition coil kit 19257878
Engine controller kit 19201861
High flow / 60PSI (400kPa) fuel pump(not available from GMPP)
Carburetor fuel system
Intake manifold (single plane) 19244035
Intake manifold (Dual plane) 19244037
Carburetor 19170095
Air cleaner 12342071
Ignition controller 19171130
Ignition coil kit 19257878
Fuel pump 6472657 Terms and Conditions
Warranty Information
GM Performance Crate Engine Start-up Instructions
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Products Accessories for LSX376-B8 Crate Engine 19171049 19260831
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