FZJ80 Gen3/LS1 V8

Chevy V8 to the Land Cruiser 4-speed Automatic

The FZJ80/100 Manual - GM V8 Kit part no. MFK1045G3A utilises the Toyota bellhousing, instead of a replacement bellhousing, a flywheel housing is supplied which measures 61 mm/2.4" long. This housing has the GM bolt pattern on the front and the Toyota 1FZ, bolt pattern on the rear.

The transmission torque converter is coupled to the flywheel via a crankshaft adaptor. The adaptor has the Toyota bolt pattern and spigot diameter on the transmission end with the GM crankshaft bolt pattern and spigot diameter on the engine end.

This allows the Toyota flex plate and torque converter to be bolted to the rear as with the old 1FZ engine. On the rear of the engine the GM flex plate is utilised, it is supported by the flex plate stiffener supplied in the kit. The stiffener is required, to support the flex plate when the starter motor is engaged.

The kit is also supplied with an oil pressure sensor adaptor, the adaptor is fitted in place of the of the GM sender located behind the intake manifold at the back of the engine block.

A water temperature adaptor is also supplied, the adaptor is fitted in the right hand cylinder head behind the exhaust manifold, it accepts the original Toyota sender.

Engine Mounting/ A/C Compressor

The engine mounting kit to suit the FZJ80 series Land Cruiser consists of engine block brackets which bolt to the original Toyota engine mount rubbers. The transmission is moved forward 25mm to help reduce the amount of modifying required to gain enough clearance between the right hand rear coil pack and the firewall.

The right hand chassis bracket must be reduced in length to allow the A/C compressor to fit as shown in this photo. The engine mountings are designed to offset the engine toward the left hand side of the vehicle to allow enough room to fit the A/C compressor. The kit includes a new A/C compressor bracket which has been re-machined to give an additional 10mm of chassis clearance.

The LS2 air compressor is smaller than the LS1 version but the mounting bracket offsets the compressor to far out from the engine block which prevents it from fitting into the Toyota chassis.

Alternator Relocation

The alternator is then relocated to the top of the engine on the left hand side as their isn't enough room for it to fit in its original position between the block and the chassis. A new re-machined alternator bracket is supplied with the kit along with a new interface bracket and bolts. This is a photo of a relocated alternator on a super charged engine. Note the installation in this photo is in progress and the alternator has been temporarily fitted.

Engine Sump

The aluminium truck style rear drop sump is the preferred type for off road vehicles. The sump will require some modification to enable it to clear the steering track rod when the suspension is fully compressed. The pickup will also need to be modified to suit the sump. Marks 4WD Adaptors now stock modified truck style sumps with pickups. The Commodore dipstick and dipstick tube can be used with the truck sump but will require modification.

Interface Wiring Looms

Marks 4WD Adaptors now manufacture a complete engine wiring harness for the Gen3 engine, this harness comes complete with all relays. The loom is also fitted with the standard OBD2 diagnostic plug to make fault finding a breeze. The loom can be used on vehicles fitted with a manual transmission or the original Toyota Automatic transmission.

Marks 4WD Adaptors are now designing a complete engine wiring harness for the Gen3 engine into the Toyota, this harness comes complete with all Toyota and GM plugs, with the exception of a single wire to connect to the fuel pump relay it is a virtual plug in and drive installation. The loom is also fitted with the standard OBD2 diagnostic plug to make fault finding of the Gen3 a breeze. The loom can be used on vehicles fitted with a manual transmission or the original Toyota Automatic transmission. The loom is also equipped with a 9-pin and 25-pin plugs to enable an easy connection to the computer interface.

Marks 4WD Adaptors also manufacture an interface loom for the three plug VT engine loom. This interface loom is equipped with all of the required relays and fuses to control the PCM, fuel pump, A/C compressor, Engine fans and reverse lights. The interface loom can be used with either the manual or automatic VT engine looms.

Computer Interface

Marks 4WD Adaptors have designed a new interface to enable the GM computer and Toyota computer to interperate signals from each other, the interface provides RPM information which is used to calibrate the existing Toyota 6-cylinder petrol tachometer from the Gen3 engine. This eliminates the inconvenience of removing your tachometer from your dashboard to have it re-calibrated. The interface also provides VSS, water temp, TPS, knock sensor signals, and diagnostic information. The unit is easy to install and plugs directly into our interface loom.

The kit is also supplied with an oil pressure sensor adaptor, the adaptor is fitted in place of the of the GM sender located behind the intake manifold at the back of the engine block.

A water temperature adaptor is also supplied, the adaptor is fitted in the right hand cylinder head behind the exhaust manifold, it accepts the original Toyota sender.

Kit Part Numbers Are As Follows:

Gen3 V8 Engine to 4-Speed Automatic Kits