2025 Peterbilt 536, PACCAR, PX-7, 300HP, PACCAR 8 Speed Transmission, Day Cab, , , Stock # 1786523 Looking for a truck that can handle the toughest jobs? We ve got it for you. This Peterbilt Model 536 features the powerful PACCAR PX-7 engine with 300 HP, PACCAR TX-8 8-speed automatic transmission, 271-inch wheelbase, and 26,000 GVWR. Don t hesitate to call or come by Rush Truck Center - Austin, and let one of our sales professionals find the right body option to get this truck on the road for you! Financing options are available.