Chevrolet Performance DR525 6.2L Race Spec Crate Engine - 525 HP/498 TQ - NMCA Legal - Factory Sealed Racing

NMCA LS Stock Class Spec Racing Engine

The DR525 is a factory-sealed drag racing crate engine designed specifically as the spec engine for the National Muscle Car Association's LS Stock racing class. This race-ready LS3-based engine delivers 525 horsepower and features tamper-proof seals for class compliance.

Specifications:

• Part Number: 19329009 (with muscle car oil pan) / 19329008 (with F-body oil pan)
• Engine Type: LS-Series Gen IV Small-Block V-8
• Displacement: 376 cu in (6.2L)
• Bore x Stroke: 4.065 x 3.622 (103.25 x 92mm)
• Power: 525 horsepower at 6,200 rpm
• Torque: 498 lb-ft
• Compression Ratio: 10.7:1

Racing-Specific Features:

• Factory-sealed with tamper-proof seals for NMCA LS Stock class compliance
• Several tamper-proof bolts to ensure class legality
• Race-ready configuration for minimal prep time from crate to staging lanes
• Legal in multiple NMCA/LSX Showdown Challenge classes

Engine Construction:

• Cast aluminum block with 6-bolt, cross-bolted main caps
• Nodular iron crankshaft
• Powdered metal connecting rods
• Hypereutectic aluminum pistons
• Components designed to meet high standards of competitive racing

ASA Camshaft Technology:

• High-performance ASA (Automotive Simulation Associates) hydraulic roller camshaft
• Valve lift: 0.525" intake / 0.525" exhaust
• Duration (@0.050): 226° intake / 236° exhaust
• Tight 110-degree lobe separation angle
• Excellent throttle response and high-rpm breathing
• Higher-rate valve springs for durability

Cylinder Head Specifications:

• LS3-type rectangular-port aluminum cylinder heads with 68cc chambers
• Valve sizes: 2.165" intake / 1.590" exhaust
• Optimized for high-rpm airflow and racing applications

Required Control System:

• Must use Chevrolet Performance's custom-calibrated E67-type engine control system (P/N 19354340 - sold separately)
• Features tamper-proof engine control unit for racing compliance
• Specially calibrated for DR525 specifications

Oil Pan Options:

• Available with muscle car oil pan (19329009) or fourth-generation F-body oil pan (19329008)
• Choose based on specific chassis application