Isuzu just announced two new gas engines for the N-Series at the NTEA Work Truck Show in Indianapolis, including a 6.6L V8 for the Class 3 NPR and Class 4 NPR-HD, as well as a 6.0L V8 for the Class 5 NQR and Class 5 NRR. The 6.6L unit in question is the GM 6.6L L8T V8 engine, but the 6.0L unit is a new heavy-duty, gasoline-powered engine from Power Solutions International (PSI). While not yet confirmed, there’s a good chance this engine will also be available in the Chevrolet Low Cab Forward 5500, and PSI will take over the 6.0L engine option after GM drops it later this year.
As we covered previously, Chevrolet Commercial also announced a new engine at the NTEA Work Truck Show, namely the new 6.6L L8T V8 gasoline engine for the Chevrolet Low Cab Forward truck. The new L8T engine will be offered for the 2021 model year starting later this Summer. Output is rated at 350 horsepower and 425 pound-feet of torque, and it will mate to the 6L90 six-speed automatic transmission.
As for the new 6.0L gasoline engine from PSI, specs include output ratings of 311 horsepower and 353 pound-feet of torque at 4,150 rpm when equipped in the the Isuzu NQR and NRR. Transmission duties will be handled by the six-speed Allison 1000 RDS transmission. Interestingly, the engine is based on a GM Small Block Gen 4 Vortec architecture.
When it debuts on the Isuzu NRR Gas model, the new 6.0L will help to create the industry’s first gas-powered Class 5 low cab forward truck with a 19,5000-pound GVWR. Isuzu says that availability is anticipated for either the fourth quarter of 2020, or early in the first quarter of 2021.
Would you be interested in seeing the new 6.0L engine from PSI in the Chevrolet Low Cab Forward 5500? Let us know your thoughts in the comments, and make sure to subscribe to GM Authority for ongoing GM news coverage.