The FJ55V was followed by the 60-series, with which the Land Cruiser took on a body width of 1,800mm, and a more spacious interior in the process.
Having pursued the styling of the station wagon, the separate front fender and hood that had continued since the first generation of the Toyota BJ was replaced with a unified press line, still retaining the old image of the Land Cruiser.
Because the side frame on the FJ55V had already been given a strong ladder frame with a completely enclosed structure, on the 60-series the improvements were limited to minor structural changes and an increase in size. The changes were made in the cross members, particularly in the length and positioning. It was necessary to expand the axle tread to balance the larger body, and because there had also been a demand to make the interior more spacious and comfortable.
The newly developed 3B-type diesel engine was the first diesel engine to be mounted in a long model diesel engine. The cylinder bore of the 2B-type engine that had been mounted in the BJ41/44 was widened by 4mm, which increased the piston displacement by 263cc, bringing it up to 3,431cc. The structure of the 2B-type and 3B-type engines was essentially the same, but the compression ratio in the 3B-type was reduced from 21 to 20, increasing the performance specs slightly by an additional 5PS/2kgm. In 1983 the 3B-type engine was subject to further modifications under stricter emissions regulations, and when the change came from the BJ60 to the BJ61, the fuel injection pump arrangement changed from a linear to a distributed type arrangement, and the output characteristics became milder.
The 2H-type was the first 6-cylinder diesel engine to appear in the Land Cruiser series. It had a different number of cylinders than the B-type, but the sub-combustion chamber was a swirl type just like the 3B-type. The powerful torque delivery of the 2H engine at low speeds was strong enough to activate the high-speed final gear, making it easier to drive on highways.
The 2F-type gasoline engine that was inherited from the 50-series had changes made to the crankshaft, and the piston stroke decreased by 6.6mm. In the later phase of the 60-series with Electric Fuel Injection (EFI) came further improvements in both power and fuel consumption.
The instrument panel on the early model 60-series had a resinous pad with steel panels. The meter panel was an independent unit, retaining the image of the utility car, though the interior of the car had full trim and looked much like that of a passenger car. This was quite unlike the FJ55/FJ56.
The 60-series underwent a number of minor changes. In time it took on power windows and A/T, as well as other luxury trimmings. The resinous pad area was increased on the instrument panel as a safety precaution against crashes, and the seats were changed to a sport-type design.