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Nothing really. But remember that the front and rear ring and pinion MUST be the same gear ratio. You didn't say if the Z71 was a 4-wheel drive. If it is not then you will either kill the engine power are may even increase the power.That depends on the gear ratio in the 3/4 TON rear end and the 1/2 ton rear end. / DIFFERENCE Low gear verses high gear. Low gear= Power. High Gear = No power.
The rear end gear ratio on a 1980 Oldsmobile is 3.73, in the overdrive gear. The low gear ratio is 1.43.
It depends on whether you are talking about the front sprocket (the one at the pedals, called a chainring) or the sprocket at the rear derailleur. The lowest gear at the front is the smallest sprocket/chainring. The lowest gear at the rear is the largest sprocket. So if you combine the smallest sprocket at the front with the largest sprocket in the rear you have the lowest gear available on your bike.
may be a bad or worn ring and pinion gear axel brgs' or low gear oil
How fast are you going and what gear are you in???
Disconnect the transfer case!
Could be,Low on ATF.Front pump is shot.Linkage is disconnected.Blown rear end.
Gears in a car change where the powerband (or Torque) are in the RPM range relative to what gear it's in. When a car is put into 1st gear, the "power" in the car is very very low in the RPM range and this is why a car is put into a low gear when climbing a hill or steep grade.
I'm not real sure what your question is but I'll try to answer. In all cases speed within a gear selection depends on your trucks rear differential gear ratio. If you mean what is the lowest speed you can shift to third gear you should be able to drive on flat surfaces as low as 20 mph. If your truck seems to run well you are OK. If your truck jerks or seems to be laboring, you probably have a very high gear in the rear end and may need to wait to about 25 mph. If you are talking about the maximum speed you can go in third gear you will know when you reach it because you will have also reached maximum effective RPM on your engine and the truck will simply not go any faster in that gear.
well on my truck i have 4 gears low 123, and low gear is my granny gear because it goes very slow. in an automatic your 1 gear or your L gear is your granny gear
u joint
Yes