Our #1 selling race engine for asphalt, the LS Spec Late Model 5.3L engine was developed with the racer in mind. Not only is it an affordable and reliable LS race motor, but it also offers a competitive edge unmatched by any other engine at this price point. Developed by former champion NASCAR engine builder Carl Wegner and his skilled team of engine techs at Wegner Automotive.
This engine is fully encrypted and comes dyno tested and sealed.
Please view the features and options tab for more information.
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Engine Block (encrypted)
Engine: GM LS Wegner Race Prepped
Displacement: 327 (5.3L)
Rotating Assembly (encrypted)
Crankshaft: GM HD, Custom
lightened and balanced by Wegner, 3.625“ stroke
Rods: 4340 Steel
Pistons: Custom Wegner Forged with Dome
Valvetrain & Cylinder Heads
Cylinder Heads: GM Casting
2” intake valve / 1.55” exhaust valve,
CNC ported, 64cc Chambers
Camshaft: Hydraulic Roller
Rocker Arm: GM OE Steel,
Trunnion Upgrade, 1:7ratio
Lifters: GM Hydraulic Roller
Intake Manifold: GM carbureted, Unported #88958675
Additional Engine Features
Mechanical Fuel Pump
Serpentine Front Dress
Wet Sump Oil Pump and Custom Pan
Engine Weight 415 lbs.
Engine is fully encrypted and sealed
5.3L LS Spec Options