What number do I use? I have 12 41 11 83 Depending on the ones I pick I get both answers. Lol
CK5
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Are these 3.73s or 3.42s?
- Thread starter RSWORDS
- Start date
Looks to me like 12 41, which is 3.42
The 11 83 should be the date of manufacture.
The 11 83 should be the date of manufacture.
Everything I find say to find the 41 with a number after though. I'm completlt lost. I should have counted. Lol
And 11/83 manufacture date would make this a 84 model truck. It's an 83.
And reguardless it's still better then the 3.07s I assumed it had. Lol
It is the 12 and 41.
Be really hard to fit 83 teeth on a ring gear
Be really hard to fit 83 teeth on a ring gear
So not the 41 and the 11?
I also have reason to believe these are not original gears. They have VERY little wear and pattern, the housing and cover have damage that looks like a gear set or carrier exploded, and the globebox sticker shows the code for a gov lock but it's open.
better verify the front also . . .
Same, changed fluid in both tonight while on the lift. I miss my Toyotas where it's easy to count gear teeth. Lol
Same date code? Or just the same 12 / 41 gear ratio?
Don't remember exactly. Didn't take a picture.
I really didn't care as this truck is getting tons with some deep gears soon but curiosity dug in more then anything.
So I got up a friend at East Coast Gear Supply. He said bigger number first. So 41 11 are 3.73s
For what it's worth, that can't be universally true. Here is my GM 8.5" front ring gear. Known to be 41/11 3.73 ratio. And the last 2 numbers don't make sense if they're not the date code.
Since his numbers are "12 41 11 83," if he reads "41 11" as the R&P numbers he's left with just "83" for the date code, with a random "12" on the side. Which makes no sense. "12/41 - 11/83" makes sense, at least to my eyes.
Don't know the answer, but it was confirmed with a new set up off the shelf.
I thought you meant the date code on yours
It's pinion first, then ring gear, then month, then year.
