Gear ratios & highway speed

[Phil Waterman]

Hi Peter

You started your thread "Ok - I know I'm going to get crucified for this but here goes!". But not to worry, most if not all of us have wanted to take a really long trip in our CMPs and are either envious or doubt your sanity (my kind of crazy) for undertaking a trip of that length.

I'd love to do the Alcan tour in 2012 but the distance to and from the start is to long to consider for my old bones. I suspect the C60S would make the trip fine.

Hope that you can workout all the details, carry a good video camera and still camera so that you can share the trip.

Hope you will keep asking questions and bouncing ideas of the rest of us.

Cheers Phil

[motto]

I operated my Lease-Lend Chev for many years with a Five speed OD box from a CCKW. I found that it was not a success with the 216 as that engine just didn't have enough grunt to pull 5th gear except under favourable conditions. The 235 engine (still a splash feed) made all the difference but even then I could have used a few more cubes.

David

[lynx42]

Motto,

Didn't you upgrade your Dodge Weapons Carrier too 20" wheels as well? How did you do it and how did it go?

Regards Rick.

[motto]

Hi Rick. Seasons Greetings to you and Jill.

Yes I had a set of White M3A1 Scout Car wheels modified by Austral Wheel Works to go on my 3/4 ton Dodge WC and used 9.00-20 ND bar tread tyres. I still have them but don't look upon them as being a success. I thought it an easy and easily reverse able way to increase road speed.

Where they weren't satisfactory was as Lang commented in relation to the C8AX, 20 inch wheels just looked wrong and added to that the 230 cu in engine is barely adequate anyhow so I was back to 3rd earlier. Another negative affect was the degredation of off-road performance that the single speed transfer case couldn't help with.

I currently have a Dodge 3/4 ton Command Car on the build in which I have installed 4.89 diff's and a two speed transfer case as against the 5.83 and single speed originals. We'll see.

David

[Mike K]

This is just rambling thoughts . You can buy a aftermarket gear set for the series Land Rover transfer case . The ratios are such that the high range road speed is better but the low ratios for off road use are hardly affected . At the Traf swap a few years ago, a guy had a land Rover FS with that aftermarket gear set fitted ...the complete car was $600 ..... cheap when you consider the special gear set is about $900 to buy . All that doesn't mean much for a C8AX ..but there were two diff ratios fitted on the C8A series ...

[Lang]

Mike,
Do you know if it is possibe to adapt a Fairey overdrive to a Blitz transfer case? If you could do this by even getting a new gear cut it would be the answer to Peter's prayers. Those Landrover overdrives are not too hard to find and probably the perfect upgrading for the Blitz which certainly has more power in reserve to pull a higher gear than the Landrover 4's. A Dodge or any of several other (Nissan, Suzuki, International 1200, F150 etc) remote transfer cases might take the overdrive and be easily fitted in place of the original.

Lang

[Mike K]

lang

The Standard 2 and 1/4 litre Land Rover 4 engine puts out about 70 bhp.