Here you go. I have been reading this forum for a month or so & I am impressed with the technical knowledge available here. Our snowmobile club in Maine has 2 Imps with C4 rear ends in them. We have successfully used them for grooming for the last few years. But, this year our luck ran out. We blew up both rear ends. I read the following in an old post:
"You know I have no issues with the OC-4 in my unit, but if it ever goes I think I would replace with a cut to size Ford 9 inch axle. They are super common and there is a limitless supply of gear ratios. A standard issue unit is rated for more than 600 hp! Putting an automatic trans and something like a 5.13 ratio would be sweet. Putting some tough disc brakes on the unit should do the trick for steering."
I am looking for info on installing a Ford rear end in both of our machines. Further, we are considering upgrading the motor size & utilizing an automatic transmission in the drive line. We are blessed with having mechanics, fabricators and machinists as part of this project, talent is not the issue, knowledge is. I am particularly interested in ideas such as ring & pinion combos to replicate original speed/power specs. All of our machines are set up for Ram Steer so the steering part of the formula is not very demanding; ram steer is just the ticket for these machines. Once this discussion gets going, some other members of our club may join in as my technical knowledge will quickly run out. All ideas & suggestions are welcome. Thanks
"You know I have no issues with the OC-4 in my unit, but if it ever goes I think I would replace with a cut to size Ford 9 inch axle. They are super common and there is a limitless supply of gear ratios. A standard issue unit is rated for more than 600 hp! Putting an automatic trans and something like a 5.13 ratio would be sweet. Putting some tough disc brakes on the unit should do the trick for steering."
I am looking for info on installing a Ford rear end in both of our machines. Further, we are considering upgrading the motor size & utilizing an automatic transmission in the drive line. We are blessed with having mechanics, fabricators and machinists as part of this project, talent is not the issue, knowledge is. I am particularly interested in ideas such as ring & pinion combos to replicate original speed/power specs. All of our machines are set up for Ram Steer so the steering part of the formula is not very demanding; ram steer is just the ticket for these machines. Once this discussion gets going, some other members of our club may join in as my technical knowledge will quickly run out. All ideas & suggestions are welcome. Thanks