broken ring gear!!! questions

[BurnoutNova]

i have a 71 K-10, with the normal 12 bolt rear...and yesterday i notice a hole in the rear end cover, leaking fluid. so i thake it off and some teeth are in the bottom of the case.

so i need new gears. on the ring gear it says 3817779- 14:43 GM 8-68

so im thinking it has 3.07 gears. but i was told 4x4's have 3.73's either way, any tips/advice wopuld be great for when i go to change the gears

i was going to order the gear set and a pinion bearing. what else do i need?

thanks, zach

[WORNBRAKES]

Yep you are right. 43 / 14 - 3.07

[BurnoutNova]

i pulled the front cover as well. it also says 43:14, so i guess now im looking for some used 3.07s. for the rear
zach

[Destructo]

If you can afford it I would go get new gears for your rear-end. Used gears in your front axle wouldn't be too bad, unless its full-time. But if you get used gears you'll be running the risk of them making noise, but as long as your willing to take that chance its cool.

[BurnoutNova]

well, wheres the best place to buy them?

summit only has 3,73's and up.

eventully i want a lift, big tires, and diffrent gears and posi axles...but right now i cant afford them.

and what if i find some gears that come from a running truck in good shape, where they want to replace them with 4.11's or somthing, would that be good if i know there in good shape?


thanks, zach

[jollyroger]

if you are planning to go to BIG tires then change to a lower gears front and rear. You will not like what the tall gears and tall tires will do to the performance. It will not come out of the hole worth a darn and it transfers too much load to the transmission. Ask me how I know.

[BurnoutNova]

well right now, i cannot afford tires. so i just need new 3.07 gears for the rear. i just need to fix the truck and have it in driveable condition.

whee do get new 3.07 gears from? i cannot find them online anywhere.

[jollyroger]

i bet you could buy a whole used rear axle assembly cheaper than you could get the gears. Heck someone gave me a whole truck minus the engine and tranny. Most rear gears seem to last a long timer...at least for me. I have never had to change a gear set due to damage. That way you don't have to worry about setting the lash and depth on the new gears.

[BurnoutNova]

well, you have a good point, but it seems like now is the time to go ahead and replace the gears with some good ones that will hold up, i will be trailoring my nova to the track almost weekly this summer, and i want to know that the rear end/trans is in good shape.

i would much rather spend the 2-250$ and redo it with new gears. ive realized i dont really want a big 4x4 anyway, the 31's are plenty big for my daily driver, and i'd rather spend the money on cab corners/rockers, and the body in general. sooo, i just want new 3.07's and MAYYYBE a posi unit if i can find a cheap one.


so does anyone know where to find new 3.07 ring and pinion set?

[68K10Custom]

I bought front (Dana 44) and rear (GM 12 bolt) Yukon gear sets for my 68 K10 from Randy's Ring and Pinion (www.ring-pinion.com).

Not sure if they're still the lowest price out there for Yukon gear sets?

Also bought an Eaton posi from them for the rear. There is quite a difference between on-line prices. Sweet burnin' those tires in the summer but is a bit more squirrely in the winter when just running two wheel.

Oh yah, these guys also stock the "good" Timken bearings.

Here's a nice link on rebuilding differentials too...

www.off-road.com/chevy/tech/gears/

[1FaastC10]

too bad you're not closer, i've got a pair of 3.07 12 bolts hiding in the garage that i cant find anyone who wants to give them a home.

[Budweis]

if thats a 12 bolt and you want used theres some on ebay
http://search.ebay.com/search/search...s&newu=1&krd=1

or if wanting new you should be able to go to any decent auto parts store and have them order it just call around for best price.

[BurnoutNova]

update,

i called richmond gears...they say there is no such thigng as 3.07's there retarted

then they say 3.08's will be fine, but i want to go with 3.07's, thats what came out, so i figure why not put 3.07's back in. i just want to be safe, and ive never dealt with much rear end stuff, so i decided that was the way to go.

so i go to one of three auto parts stores in town, they cant get 3.07's, just 3.08's

so i got to the next store, they clain they can get 3.07's, but there 256.00$$$!!! so i say what the hell and i order them, and then a week later they call me up and i go get them, but the idiot had 40:13 instead of 43:14 so i said screw it and now im gonna just get a whole rear end.

SOOO basicly, lots of people think there is no 3.07 ratio, and im still without geras!

[IoWnZa]

It is 3.08, the same thing that I have for the moment.

I am thinking about going to 3.42's, so then I might sell my 3.08's. They are 2 months old.