Sealed Crate Engine Communication
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The Power and Strength of Our LS Racing Engine in a Long Block
Chevrolet Performance’s 525 RLB is based on the LS engine family and is like the 6.2L CT525 but sold as a sealed long block for universal racing sanctioning bodies.
PART NO. 19435005
533 HP @6600 RPM
477 LB/FT @5200 RPM
525 RLB Tech Specs
- Part Number: 19435005
- Engine Type: LS-Series Gen IV Small-Block V-8
- Displacement (cu in): 376 (6.2L)
- Bore x Stroke (in): 4.065 x 3.62 (103.25 x 92mm)
- Block (P/N 12729604): Cast aluminum with 6-bolt, cross-bolted main caps
- Crankshaft (P/N 12736809): Nodular iron
- Connecting Rods (P/N 19170198): Powder metal with ARP bolts
- Pistons (P/N 12533507): Forged aluminum
- Camshaft Type (P/N 12366543): Hydraulic roller
- Valve Lift (in): .525 intake / .525 exhaust
- Camshaft Duration (@.050 in): 226” intake / 236” exhaust
- Cylinder Heads (P/N 12675871): LS3 rectangular port; aluminum as-cast with 68cc chambers
- Valve Size (in): 2.165 intake / 1.590 exhaust
- Compression Ratio: 10.7:1 (nominal)
- Rocker Arms (P/N 12696105): Investment-cast, roller trunnion
- Rocker Arms (P/N 12681275): Investment-cast, roller trunnion
- Rocker Arm Ratio: 1.7:1
- Recommended Fuel: Premium pump
- Maximum Recommended rpm: 6700 RPM
- Reluctor Wheel: 58x
- Balanced: Internal
Win with Integrity
Reject knockoff crate engines and choose a sure shot of adrenaline from Chevrolet Performance, a 20-year supporter and long-standing sponsor of grassroots racing nationwide.
CHEVROLET PERFORMANCE CIRCLE TRACK CRATE ENGINE†
- Features all-new GM OE parts
- Factory-sealed for fair competition
- Dyno tested for a minimum of 50 hours with 45 hours at wide-open-throttle (WOT)
COPIES OF THE CHEVROLET PERFORMANCE CIRCLE TRACK CRATE ENGINE
Imitations of the real CT350, CT400, and CT525 engines that are not designed, engineered, tested, and built by Chevrolet Performance.
Mobil 1 is now The Official Motor Oil of Chevrolet Performance.