The kit consists of an adaptor housing which couples the new engine to the original petrol bell housing. The new adaptor housing measures 72 mm in length and spaces the Holden engine away from the irregular shape of the Nissan Patrol firewall. No firewall modifications or re positioning of the original transmission is required.
The automatic transmission is retained in its original location along with the original torque converter and flex-plate. A specially machined crankshaft adaptor supplied with the kit bolts to the rear of the GM engine and flywheel. The adaptor converts the rear crankshaft bolt pattern from GM dimensions to standard Nissan 6 bolt crank dimensions allowing the Nissan flex-plate and torque converter to be connected to the engine.
A standard GM flywheel is needed for the conversion. The GM automatic flex-plate is not used as the ring gear can be pushed away from the starter pinion while cranking.
An adaptor housing cover plate, which protects the bottom of the automatic transmission from water and dust entry, as well as all the required bolts, nuts and washers are also supplied with the kit.
An oil pressure sender adaptor is supplied in the kit. The adaptor allows the original Nissan sender to be fitted to the Holden engine.
A water temperature adaptor is also supplied in the kit. This adaptor allows the original Nissan Temperature gauge sender to be fitted to the Holden engine.
Holden V8 Bolt Patterns
No kit is available to fit the Holden Trimatic bolt pattern, as this bolt pattern can not be machined into the adaptor.
When ordering Holden 308 V8 kits, please make sure the bolt pattern at the rear of the engine is a Turbo (Chevy) pattern.
Holden V8 engines are available with two bell housing bolt patterns all 253 C.I. engines have the Holden Trimatic bolt pattern.
The 308 C.I. engines are available with the Turbo or Trimatic bolt patterns.
The 1988 VN and later 304 C.I. and 350 C.I. engines have the Turbo bolt pattern.
The bolt patterns are illustrated below.
- Adaptor flywheel housing
- Crank adaptor boss
- Adaptor housing cover plate
- Oil pressure sender adaptor
- Water temp sender adaptor
NOTE: Will only suit Turbo (Chevy) pattern engines, no kit is available for Trimatic bolt pattern engines