Ilmor NT1
| Ilmor NT1 | |
|---|---|
 An NT1 pictured at Young's Motorsports in August 2020 | |
| Overview | |
| Manufacturer | Ilmor |
| Production | 2018–present |
| Layout | |
| Configuration | V8 engine, 90° cylinder angle[1] |
| Displacement | 6.2 L (6,162 cc)[2] |
| Cylinder bore | 106.3 mm (4.2 in) |
| Piston stroke | 91.44 mm (4 in)[3] |
| Cylinder block material | Compacted graphite iron |
| Cylinder head material | Aluminum alloy |
| Valvetrain | 16-valve, OHV, two-valves per cylinder |
| Combustion | |
| Fuel system | Electronic Port Fuel Injection (EFI)[4] |
| Management | Holley 554-132[5] |
| Fuel type | E15 Ethanol provided by Sunoco (2018–present)[6] |
| Oil system | Dry sump |
| Output | |
| Power output | 650-700+ hp (410-708 kW) @ 9,000 rpm (depending on displacement.) |
| Torque output | Approx. 500 lb⋅ft (678 N⋅m) @ 7,500 rpm |
| Dimensions | |
| Dry weight | 450 lb (204 kg) |
The Ilmor NT1 engine is a 5.87-liter, naturally aspirated, V8 racing engine, developed and produced by Ilmor for competition in the NASCAR Craftsman Truck Series in 2018 it is currently used in the series as a spec engine used by all teams.[7][8][9]
Specifications
- Engine type: Ilmor V8
- Capacity: 6.49 L (396 cu in)
- HP rating (superspeedway / intermediate / dirt / road-street course / short tracks): 650 hp (485 kW) / 700 hp (522 kW) (2026 rules package)
- Max. RPM: 10,500 rpm
- Weight: 450 lbs. (450 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: Holley/Bosch 8x high pressure port injectors
- Fuel: E15 Ethanol provided by Sunoco (2018–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: Holley 554-132
- Engine service life: 1,500 miles[10]
- Gearbox: H-pattern
Applications
- NASCAR Craftsman Truck Series (2018–present)
References
- ↑ "Ram returns to NASCAR with Ilmor power". Race Engine Technology. Retrieved August 4, 2026.
- ↑ "Ilmor NT1 engine powers Gander RV & Outdoors Truck Series". NASCAR. Retrieved August 4, 2026.
- ↑ "HOLLEY EFI MAKES ARCA DEBUT". Holley. Retrieved August 4, 2026.
- ↑ "HOLLEY EFI, ALL-NEW NT1 DOMINATE 2018 NASCAR TRUCK SEASON". Holley. Retrieved August 4, 2026.
- ↑ "2026 ARCA Rule Book" (PDF). ARCA. Retrieved August 4, 2026.
- ↑ "Sunoco Fueled for 15: Celebrating 15 Years of Fueling Victories". NASCAR. Retrieved August 4, 2026.
- ↑ "Truck series teams weighing pros and cons of spec engines vs. OEMs". ESPN. Retrieved August 4, 2026.
- ↑ "Toyota NASCAR Truck Team Forced To Adopt Spec Engine After Rules Update". Autoweek. Retrieved August 4, 2026.
- ↑ "Grassroots Racing and the Future of Motorsports". Engine Builder Magazine. Retrieved August 4, 2026.
- ↑ "NASCAR Trucks: Spec Engines Overpowering OEM Options; Ilmor Short On Inventory". Autoweek. Retrieved August 4, 2026.