M151 re-gear / swap

What is the gear ratio of the M151?
What are the gear options and what is required to change the gearing?
The lower the better as it will only bused off road going up and down a mountain for hunting, hauling corn, etc.

Steve, I think Joe(nattieleather) is the man to ask. I thought he had alot of experiance with them.

Have a contact for him?

I just saw this post. Give me a day or so to get the answer my 151 stuff is still packed and in the garage.

Upon more thought. 1st Gear in the M151 is a real granny gear. You might find that the gear ratio in stock configuration is more than you'll need. Just to give you an idea I can take my 151 and put in first gear and at idle let the clutch out and it will just crawl along. It's great for parades.... I've actually gotten out of the vehicle and walked along side it while it was running like this!

Here is the gear ratio information:

gearbox
input torque rating 120 lbs.ft (16,6 kg.m )
1 gear 5.712:1
2 gear 3.179:1
3 gear 1.674:1
4 gear 1.0:1
reverse 7.497:1

tranny 1:1

diff
torque rating 800 lbs.ft (110,95 kg.m )
ratio 4.86:1