greatskiiiier

iTrader: (10)

I have my stock rear and I'm in college so moneys kinda tight
would love to do a cam/ heads but need a 12 bolt before i can do anything big

my buddy told me that he has a 10 bolt out of a 3rd gen that i can have.. eaton posi and 3.73s but it has drum brakes still

how hard would it be to swap it out for my stock 10 bolt and switch over the brakes? will it bolt right up?

12secSS

iTrader: (30)

The 3rd gen rear end is two inches shorter then the 4th gen rear end. Also it is just as weak, if not weaker then the 4th gen. If your 10-bolt is busted, then that will be a fine temporary replacment. If your 10-bolt is still good, don't waste your time.

greatskiiiier

iTrader: (10)

idk if its built up at all, but it has and eaton and 3.73s even if it goes ill have a good rear in my backyard... even if it only lasts a year itll be worth while--> depending on if itll bolt right up and how hard it would be to swap the brakes

Vicinity

iTrader: (7)

Higher gears will make it break quicker.

Just keep what you have, you can take his and keep it in the backyard just in case, but swapping it in will offer you no benefits.

Btw, wrong section.

greatskiiiier

iTrader: (10)

naturally, but everything ive heard is that 3.73s stand up nicely in 10 bolts, 4.10s blow em up fairly quickly-- ive heard 3.73s in stock 10bolts last several years in 11second DDers

true.. havent been on the site for the past 2 years and forgot... got depressed looking in the for sale section realizing i cant afford anything lol

jam01

that would be considered lower gears, and should not matter. as far as the rear goes if it is 2 in shorter, there may be modifications needed for it to work. which may cost more than its worth.

greatskiiiier

iTrader: (10)

people buy rears that are 4inchs short every week.. idk if itll have a problem, maybe just some wheel spacers

CAN THIS BE MOVED TO "GEARS AND AXLES" SECTION!?!?

tittan1500

iTrader: (8)

Just because the gears might hold up does not mean the axels will. I broke 3 third gen rear ends with a 300 HP 305 don’t make the mistake and assume you are the only one to try this if your stock rear is fine now don’t beat on it.

I spent a lot of cash that i did not want to when I was in college on rear ends but it all came back to do it right the first time! If you want to play hard you are going to pay the $$$$$$$$$

BadAzzGTA89

You could always try the 9 bolt!

vjo90rs8

iTrader: (9)

what year thirdgen? pre-'90 axles will be 26 spline which will already make it much weaker than the 28 spline '90+ axles. Also, you could use wheel spacers but that will already add a couple hundred dollars to the swap.

greatskiiiier

iTrader: (10)

aluminum is cheap... get some stock, cut it to size, get out the drill and oil

if i can do this for free, ill be happy if it even lasts the summer

gold98Z28

iTrader: (7)

it will bolt right in, and the brakes are a pretty easy swap. but like said if its prior to 89 it has the weaker 26 spline setup. you can get like two inch spacers or run deeper wheels with less backspacing. but either way, m6 cars dont like 10 bolts, even tho im still running one. haha

greatskiiiier

iTrader: (10)

would i be possible to swap my 28 spline axles into the 3rd gen's housing so that way id have the eaton, 3.73s and 28 spline?

better yet swap the eaton and gears into my housing and use my axles so the size will fit nicely

Orr89rocz

iTrader: (13)

I went 1.41 and 1.45 with many other 1.50-1.60 60 foots on my 10 bolt, from 2000 trans am 3.42 gear bone stock never touched. no girdle or nothing.

10.63 at 127 so far

With an auto they can hold some power

capn smokey

iTrader: (1)

The rear will bolt right up but spacers will be needed.

greatskiiiier

iTrader: (10)

thanks

ya thats what i figured, jsut gatta get some spacers and change the breaks, but now im looking into putting under $100 into the rear so it wont blow in a matter of months

jam01

the rear out of my 84 trans am has 28 spline axels, it is also a disc brake rear. i dont have the car anymore but i still have the rear. its upgraded with an auburn rear center section. i should have also uprgraded the axels but i didnt, i was being kinda cheap. i had it rebuilt for under a grand, a new 12 or 9 bolt over $2,500.00. of course thats including brakes and everything but it was still cheaper to have it rebuilt. if you plan on putting more power to the ground, save up for the right piece.

greatskiiiier

iTrader: (10)

that rear wasnt stock with 28 spline and disk brakes though right..... and i dont plan on having more power to the ground until i grad. college (11') and get enough money in my job to be confortable and have loans paid off (15'?)

Full-Force

iTrader: (11)

Rear disk did come on 84 Z's. Mine had them. I think they came on the H.O. cars (190hp) Now what I dont know is what spline axles it had.

greatskiiiier

iTrader: (10)

just seached CZ28 and seems like 26 and 28 spline axles are jsut as strong as one-another, but 28s jsut has a tigher fit at 0 backlash... girdle and should be good for mid 12s?