Chevrolet R07

Chevrolet R07
A R07 on display in June 2014 at Road America
Overview
ManufacturerChevrolet
Hendrick Racing Engines
ECR Engines
Production2007–present
Layout
ConfigurationV8 engine, 90° cylinder angle[1]
Displacement5.9 L (5,870 cc)[2][3]
Cylinder bore106.3 mm (4.2 in)
Piston stroke82.55 mm (3 in)
Cylinder block materialCompacted graphite iron[4]
Cylinder head materialAluminum alloy[5]
Valvetrain16-valve, OHV, two-valves per cylinder
Combustion
Fuel systemElectronic Port Fuel Injection (EFI) (Cup)
Carburetor (O'Reilly)[6]
ManagementMES TAG-400i[7]
Fuel type260 GTX Unleaded provided by Sunoco (2007–2010; still in use in ARCA)
E15 Ethanol provided by Sunoco (2011–present)[8]
Oil systemDry sump[9]
Output
Power output550-950+ hp (410-708 kW) @ 9,000 rpm (depending on displacement.)[10]
Torque outputApprox. 510 lb⋅ft (691 N⋅m) @ 4,900 rpm
Dimensions
Dry weight525 lb (238 kg)[11]
Chronology
PredecessorChevrolet SB2 (1998–2006)[12]

The Chevrolet R07 engine is a 5.87-liter, naturally aspirated, V8 racing engine, developed and produced by Chevrolet for NASCAR competition in 2007. Chevrolet has been a highly successful NASCAR engine supplier, scoring 886 Cup Series wins, 582 O'Reilly Series wins, and 298 Truck Series wins, leading the all-time wins as a manufacturer in all 3 series. As of 2026, across the top 2 series, they supply engines to nearly 30 different teams, with notable examples including Hendrick Motorsports, Richard Childress Racing, Spire Motorsports, Trackhouse Racing, and JR Motorsports.[13][14]

Specifications

  • Engine type: Chevrolet V8
  • Capacity: 5.87 L (358 cu in)
  • HP rating (superspeedway / intermediate / dirt / road-street course / short tracks): 670 hp (500 kW) / 750 hp (559 kW) (2026 rules package)
  • Max. RPM: 10,500 rpm
  • Weight: 525 lbs. (238 kg)
  • Oil system: Dry-sump lubrication
  • Camshafts: Solid-roller camshaft
  • Valve actuation: Shaft-mounted
  • Valve springs: Wire-type
  • Cylinder head: 2 valves (titanium) per cylinder
  • Fuel injection: MES/NXP Semiconductors/Holley/Bosch 8x high pressure port injectors
  • Fuel: 260 GTX Unleaded provided by Sunoco (2007–2010; still in use in ARCA)
    E15 Ethanol provided by Sunoco (2011–present)
  • Lubricants: 0w grade; Mobil 1 Extended Performance (ESP), Pennzoil Platinum, Valvoline Advanced Protection
  • Block material: Compacted graphite iron
  • Head material: Aluminum alloy
  • Crankshaft: Billet steel
  • Con rods: Forged steel
  • Pistons: Forged aluminum alloy
  • Intake systems: Single plenum - aluminum
  • Electronic control unit: McLaren Electronics - TAG-400I
  • Engine service life: 1,000 miles
  • Gearbox: Sequential gearbox, h-pattern

Applications

References

  1. ↑ "The Chevrolet R07 Nascar Sprint Cup Engine: Leading Edge Technology In A Cast-Iron Box". HOT ROD Network. Retrieved July 29, 2026.
  2. ↑ "Chevy R07 NASCAR Engine - The Future Is Now". MotorTrend. Retrieved July 29, 2026.
  3. ↑ "Chevrolet R07". Racecar Engineering. Retrieved July 29, 2026.
  4. ↑ "Turning A NASCAR R07 Engine Into A Serious Street/Strip Package". EngineLabs. Retrieved July 29, 2026.
  5. ↑ "R07 Racing Cylinder Heads - New Power For Chevrolet". HOT ROD Network. Retrieved July 29, 2026.
  6. ↑ "GM RACING ANNOUNCES NEW ENGINE". Motorsport. Retrieved July 29, 2026.
  7. ↑ "The Power Inside NASCAR® Fuel Injection" (PDF). DXP. Retrieved July 29, 2026.
  8. ↑ "Sunoco Fueled for 15: Celebrating 15 Years of Fueling Victories". NASCAR. Retrieved July 29, 2026.
  9. ↑ "NASCAR Next Gen race car debuts, brings the sport into the 21st century". Motor Authority. Retrieved July 29, 2026.
  10. ↑ "GETTING 960 HORSEPOWER OUT OF 397 CUBIC INCHES WITH A NASCAR-SOURCED CHEVROLET R07 ENGINE". Holley Performance.
  11. ↑ "Engine Wars! F1 vs IndyCar vs Pro Stock vs NASCAR vs Top Fuel". NHRA. Retrieved July 29, 2026.
  12. ↑ "SB2 Small-Block V8: The Small-Block Nascar is Afraid to Sanction". HOT ROD Network. Retrieved July 29, 2026.
  13. ↑ "Chevrolet's R07 engine hits 10-year anniversary mark". NASCAR. Retrieved July 29, 2026.
  14. ↑ "NASCAR CUP SERIES MANUFACTURER STATS & RECORDS". Jayski. Retrieved July 29, 2026.
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