Caterpillar 1150

The Caterpillar 1150, factory-rated as the V-200, is a naturally aspirated, mechanical direct-injection 90-degree V8 diesel engine, not a complete machine with its own chassis, hydraulics, or undercarriage. It is the third step in Cat's 1100 series truck-engine family, sized between the 1145/V-175 and the 1160/V-225, and it shares its basic block and cylinder head with the 1140/V-150 on a common 114 mm (4.5 in) bore; stroke and injection pump sizing vary by rating. Displacement is 9.39 L (573 cu in), output is about 149 kW (200 hp) at 3,000 rpm. Cat built the 1150 from January 1968 through 1974 and sold it as a bare power unit to independent truck builders, chiefly Ford, fitted to the F-7000/F-8000, C-7000/C-8000, CT-8000 and T-8000 lines, and from 1970 in the new Louisville L-series 8000. Because it shipped without a chassis, there is no factory operating weight to quote; gross vehicle and axle ratings belonged to the truck it went into, not the engine. There is no single predecessor, since the 1100 series marked Cat's first serious push into on-highway trucking, and no direct successor model, though the architecture carried forward into Cat's own 3208 V8 from 1975.

Within the production run Cat revised the 1150's torque rating: 1968-69 trucks are quoted around 590 N·m (435 lb-ft) at 1,600 rpm, while 1970-74 production shifted to roughly 605 N·m (446 lb-ft) at 1,400 rpm for better low-end pull, alongside a wider chassis lineup once the Louisville line launched. Core hardware stayed consistent across the run: plunger-and-barrel injection pump mounted in the vee, mechanical flyweight governor, two-ring pistons, and an angled main bearing cap design unique to the family. Across the whole 1100 series Cat moved well over 100,000 units through the decade, volume that built its on-highway reputation before it began building complete truck engines under its own badge. Today the 1150 turns up mainly in restoration and preservation circles for period Ford medium and heavy trucks, plus occasional industrial or marine repower projects built around surviving blocks. Factory parts support is long obsolete; sourcing runs through machine shops, diesel rebuilders, and the used market. Because the 3208 reuses the 1160's block and intake footprint, some machining and tooling knowledge crosses over even though parts themselves do not interchange directly.

Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.