DR525 Crate Engine

525 hp @ 6,300 rpm / 489 lb.-ft. @ 4,400 rpm / with muscle car oil pan

Chevrolet Performance's all-new DR525 sealed drag racing crate engine signals an important advancement for drag racing, enabling exciting heads-up racing at a lower cost than custom-built engines. It's an approach Chevrolet Performance implemented in a number of circle track racing series, providing racers a high-performance engine at a great value.

The DR525 is designed as the spec engine for NMCA's new LS Stock racing class in the LSX Showdown Challenge Series. The 6.2L (376 cubic inches) naturally aspirated engine is rated at 525 horsepower and features several tamper-proof seals to ensure class compliance. And while it is the spec engine for the LS Stock class, it is legal in other NMCA/LSX Showdown Challenge classes - and other drag racing series.

It is offered with two part numbers: 19329009 (includes Chevrolet Performance's muscle car oil pan) or 19329008 (includes fourth-generation F-body oil pan). Chevrolet Performance's custom- calibrated E67-type engine control system - P/N 19329003 (sold separately) - must be used with the DR525 in the LS Stock class. It features a tamper-proof engine control unit.

DR525 Tech Specs:
Part Number: 19329008 (w/ Gen IV F-car oil pan)
Engine Type: LS-Series Gen IV Small-Block V-8
Displacement (cu in): 376 cu in (6.2L)
Bore x Stroke (in): 4.065 x 3.622 (103.25 x 92mm)
Block (P/N 12623967): Cast aluminum with 6-bolt, cross-bolted main caps
Crankshaft (P/N 12597569): Nodular iron
Connecting Rods (P/N 12607475): Powdered metal
Pistons (P/N 19207287): Hypereutectic aluminum
Camshaft Type (P/N 88958770): Hydraulic roller
Valve Lift (in): 0.525" intake / 0.525" exhaust
Camshaft Duration (@0.050 in): 226 ° intake / 236 ° exhaust
Cylinder Heads (P/N 12629063): Aluminum L92-style port; as cast with 68cc chambers
Valve Size (in): 2.165 intake / 1.590 exhaust
Compression ratio: 10.7:1
Rocker Arms (P/N 12569167 int): Investment cast, roller trunnion
Rocker Arms (P/N 10214664 exh): Investment cast, roller trunnion
Rocker Arm Ratio: 1.7:1
Recommended Fuel: 92 octane
Maximum Recommended RPM: 6,600
Reluctor Wheel: 58x
Balanced: Internal

Recommended Transmission: SuperMatic 4L70-E Four-Speed Automatic P/N 19299055

Installation Notes:
- Assembly does not include electronics
- Use DR525 Engine Controller Kit for engine operation, P/N 19329003
- Intended for off-road, drag racing vehicles
- Not intended for marine applications
- Front-End Accessory Drive Kit, P/N 19329418, not included with engine assembly