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air locker

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bigbud:
has any one ever put an air locker in their differrential in a bombadier,and did it work in the cold weather?

the old trucker:

   Bigbud I think it would work OK as long as you want go straight. I guess you'd have to squeeze a compressor in the engine area to run off the motor. Some big trucks have a four wheel lockup system that work good. Only problem I think you'll have is justifying the cost for the amount of time you'll use it. Are there different models for different diffs ??
                                                                                      OT.

dpaulson:
I was doing some reading and it seems that may not shift until the diff oil is warmed up.  Possibly the use of synthetic oil would be beneficial.  I have to pull my diff out to change pinion and ring gear to a different ratio anyway as well as new seals and bearings.  It would be the time to try it if I decide.

the old trucker:

   Dave what gears are in it now & is it a stock diff ? Thinking about putting in 3:90 or 4:11 ??

dpaulson:
A ford 9" was installed in it prior to me purchasing it. I'm missing about 20% in rpm's.  I'm thinking that it's about 3.5. I haven't pull it out yet.  I haven't decided what I should put in yet.  I can either get 4.11 or 4.30 or a 4.56.  I was told that factory gearing in those years was 4.11 and later years were 4.56.  I don't know if  the 4.56 came out when the 318 auto was standard issue or not.  KPM had a bomber with posi and he said that it was real good so I'm thinking that  the air locker diff could be the ticket.

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