PSD drive train questions
#1
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Thread Starter
PSD drive train questions
Is there a simple way to determine final gear ratio in a used PSD?
For example, with stock size tires, XXXX RPMs at YY MPH equals Z.ZZ drive ratio.
Secondarly, is a shorter ratio harder on the drive train than a taller ratio? (I've thought about this, and can think of good arguments for both sides).
Thanx.
For example, with stock size tires, XXXX RPMs at YY MPH equals Z.ZZ drive ratio.
Secondarly, is a shorter ratio harder on the drive train than a taller ratio? (I've thought about this, and can think of good arguments for both sides).
Thanx.
#6
Charter Member #232
Charter Member
You can take the Vin # and call the dealer they will be able to tell ya from that. What is your concern? I think that your boat is not going to put any stress on that truck what so ever. I pull mine and I keep looking back to see if it is still there. Curts Cig that was substantially heavier then our 302's you could tell was back there but it would hold 70-75 no problem and averaged about 12-13mpg all the way home
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#7
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Thread Starter
Jon: Concern is a strong word; it is more an interest. After using what little gray matter I have on a ponder, I hate to leave it unresolved. Our 10-12,000 lb loads wont challenge either one, heck I pull it now with a stock-drivetrain half-ton burban. (Yes, the breaks and suspension are beefed up on it).
So, do the individial teeth on the gears in a drive train have more stress applied with a short final ratio than a tall ratio, or is it the same.
After all the time we spent on "which freezes faster: hot or cold water?", there should be some good insight on the gear question.
So, do the individial teeth on the gears in a drive train have more stress applied with a short final ratio than a tall ratio, or is it the same.
After all the time we spent on "which freezes faster: hot or cold water?", there should be some good insight on the gear question.
#8
Charter Member #232
Charter Member
I am going to say that there is less stress on the drive trail with shorter gears. IE causing your RPM's to be higher on the highway. The axle I would think is under more stress however.
Jon
Jon
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