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Author Topic: Rear End  (Read 290 times)
Chargerdude
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« Reply #15 on: November 22, 2017, 06:25:02 PM »

Thanks everyone

so my D53 3.23:1 Ratio ..... will take off ok and cruise the highway ok?


Assuming thatís whatís still in the car

The car has it...it doesnt have the org rad, gas tank, and window moldings
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chrisrod
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« Reply #16 on: February 07, 2018, 01:00:47 AM »

I believe (and we are all saying the same thing) that the easiest to understand explanation is that 4.10:1 means that for every 4.10 turns of the drive shaft (directly driving the pinion gear), the wheels (if both have full traction or a "locked" differential), which are directly driven by the ring gear, will make 1 full revolution. So, to get to even numbers (there is no such thing as a functional partial or fractional gear tooth), 10 pinion gear teeth would have corresponding 41 ring gear teeth for a 4.10:1 rear end.  For 3.23:1, 3.23 ring teeth for each pinion gear tooth.  That would result, for instance, from a 42 tooth ring gear and a 13 tooth pinion gear.  42/13 = 2.230769 ~ 3.23.
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chrisrod
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« Reply #17 on: February 07, 2018, 01:18:20 AM »

War Story: Once in 1971, I had to get from Clemson, SC to Washington, DC to meet my father on a Sunday afternoon.  After an epic Saturday night of partying with old college buddies, I overslept and had to run up I-85/I-95 at 5,500-6,500 rpm (G60-15 tires, which by my measurements of the day on mile markers was 110-130 mph).  It was 47 years ago, so it's okay to call bullshit; those are the numbers I remember.  I was young and stupid, but the engine held together and I made it semi on-time.  You don't normally think about how much oil that engine uses under those condition, but I came REAL close to running it out of oil! If you were lucky (with the cops), you could do that Smokey and the Bandit shit in those days (also required uncommon stupidity). My (unprotected) ears rang for a couple of days thereafter, but I was in the Artillery in the 82nd Airborne Division and we shot A LOT, so I was semi-used to it.  Fast forward to today, I cruise the car at 60 mph (3,000 rpm) and I feel like the engine going to jump back in the cabin with me; I keep reaching up trying to shift it into a nonexistent fifth gear!
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