Thread: Holden6 to LT77

Originally Posted by Lotz-A-Landies

Hi Simon

You need a Holden six to Rover 2 1/4 litre four cylinder adapter. You should look for an LT77 off a Defender 200Tdi because they are shorter than the Disco 200Tdi LT77 and the gear stick is in a similar position to the series transmission tunnel.

Santana LT230 had selectable output gears and there was a vendor in South Oz who were selling the kits some years ago. may be a bit hard to find these days as Santana no longer exists.

If you use the Ashcroft adapter, you lose the ability to use a rear PTO output for a winch etc.

If you go constant 4WD, you need to get the front half-shafts and swivels from a stage 1, these will bolt straight up to the series housing. But remember if you use a Stage 1 front housing you should use a DC jointed prop shaft because of the angle of the stage 1 pinion.

I am currently working on an R380 to Rover six using an Ashcroft short bellhousing kit, but am still waiting for modification work on the flywheel housing to be completed (mates rates and timeframe). To save space between the gearbox and the crossmember behind the gearbox I plan to use a disk brake conversion to the transmission brake.The Disco/Range Rover hi ratios are very close to the series box ratios. Your other option is to find the high range gearset from a 1984/1985 Range Rover 3 speed Torqueflyte auto which had 1.003:1 ratio. The 5th gear and disco t/f will be close to a series box with overdrive.

All LT230 have the same low ratio, and with 4.7:1 diffs and 31" tyres you will have a vehicle that will almost climb trees. (You could change to Stage 1 3.54:1 diffs)


Diana

Thanks Diana, that is fantastic information, I never realised the Defender LT77 was a short bellhousing. Thank you for all of this info!