We recommend fitting front disc brakes to all vehicles being fitted with V8 engines. Most engineers in Australia will not engineer your vehicle without them. Toyota Hilux front discs, hubs and swivel housings can be fitted.

The GM V8 to FJ kit part no. (MFK371#####) utilises the Land Cruiser 11" clutch set up on a new flywheel along with a new bellhousing that measures 240mm/9.45" in length. This new bellhousing and flywheel has been designed to move the engine forward giving adequate clearance between the cylinder heads and firewall. Re positioning of the transmission or firewall modifications are not required with this kit.

Chevy V8 Diesel engines are externally balanced.

The new flywheel supplied in the kit is fully balanced, and is drilled and doweled to accept the standard Land Cruiser 11" clutch as fitted to 2F petrol engines. The flywheel is heavier, giving greater inertia allowing the engine to idle smoother. The extra weight also helps to give less chance of stalling the engine when off road climbing over rocks, and taking off on steep inclines. The extra weight of the flywheel has no adverse effect on the engine.

This new flywheel does not have a ring gear fitted it bolts to the crankshaft behind the GM flex plate. The flex plate carries the ring gear and the balance weight for the engine. The flex plate is secured to the back of the flywheel with 6 bolts and spacers.

The bellhousing accepts all the Land Cruiser 2F 6-cylinder petrol components such as the bellhousing mounts, slave cylinder, clutch fork etc.

NOTE: Using this kit gives more firewall clearance but reduces fan to radiator clearance for this reason we recommend using engines fitted with a single serpentine fan belt and reverse driven water pump.

Chevy V8 diesel to FJ40, FJ45, and FJ55 4 and 5-Speed Manual Kit part no. (MFK560CD) utilises the GM flywheel and clutch along with the Toyota bellhousing. Instead of a new bellhousing, a flywheel housing is supplied which measures 122 mm/4.8" long. This housing has the GM bolt pattern on the front and the Toyota 1F, 2F, and 3F, bolt pattern on the rear.

The kit has been designed to allow for firewall clearance without shifting the transmission or altering the drive shaft lengths.

The gearbox input shaft is coupled to the clutch via an input extension shaft. The shaft has the Toyota internal spline and spigot diameter on the gearbox end with the GM external spline and spigot diameter on the engine end. The front of the shaft is supported in the crankshaft by a sealed ball bearing inside an adaptor ring.

The clutch is operated through a thrust bearing extension sleeve, which is supported in a machined boss located in the centre of the housing. On the front of the sleeve is a thrust bearing that suits the GM clutch, pressure plate.

Marks 4WD Adaptors manufacture a two-piece flywheel that bolts up to the crankshaft behind the Chevy flex plate. By utilising the flex plate we can maintain the original engine balance as well as the starter motor ring gear. The flywheel is independently balanced and is drilled to suit the Chevy 11" clutch and a Toyota 11" clutch.

These kits consist of replacement chassis brackets which can be bolted or welded to the chassis rails and utilise GM engine mounting rubbers. These rubbers have been found to be stronger than the Land Cruiser rubbers.

The engine mounting kits have been designed to give you sufficient legal engine sump to differential clearance when used with a standard rear bowel GM sump.

Two types of engine mounting rubbers are available, standard Chevy type and now a heavy duty rebuildable type using urethane bushes. Click here for details.

The Land Cruiser viscous coupled fan is very effective as the coupling, when heated by the warm air from the radiator, virtually locks the fan directly to the water pump rapidly cooling the engine. Marks 4WD Adaptors manufacture an adaptor kit that easily couples the the Chevy water pump and pulley to the Toyota viscous coupling and fan.

Chevy diesel engines are usually fitted with an air cleaner that looks similar to the type fitted to Chevy petrol carburettor engines. This type of air cleaner will require modifications to allow it to be used with a snorkel. To over come this problem Marks 4WD Adaptors now manufacture a cast aluminium hat that takes the place of the GM air cleaner. The inlet takes a 3 1/2" hose and will fit directly to a late model Toyota air cleaner hose, should you have an early model air cleaner with a 3" outlet a rubber adaptor hose can be used. These parts can be purchased separately or as a complete kit.