twistydick

hi. ive got an 85 berlinetta. ive just gotten a totalled 89 RS from my local speedshops backlot junkyard for $150.its just got front end damage but its not worth making streetable.aside from a spare 305 (running!!!)and 700r4 its got an eaton posi with 3.23smy question is, to put this diff in my car, can i just put the 28 spline axles from the RS in or do i need to do other thing to make em fit?????? thanks in advance

TKOPerformance

You can't just put 28 spline axels into a 26 spline rear. You would need to change the differential unit. If it's an open rear you could just change the side gears, but you will have to bore and hone the axels bores in the differential because the 26 spline differentials are smaller than the 28s. You could also change the side gears in a posit case too, or you could swap in the differential from the 28 spline rear. You will have to at least check that the gears are meshing properly if you swap the differentials, and most likely you will need to set the gears up again.

twistydick

thanks. im putting the posi unit out of the RS in my 85, so was asking if the 28 splines will slip right in or needed any mods to fit my housing. i figured im gonna have to set up the new rear

five7kid

iTrader: (14)

Why not just swap the entire rear?

TKOPerformance

It's always tough to tell what people know and what they don't. Didn't mean to come off condescending if that's how I sounded.

The housings are all the same from '82-'92. Even the 4th gens are the same design, except for the length side to side, but all the guts minus the axels will interchage.

Mkae sure you use disc axels with disc brakes. The drum ones might have interference problems. Drum brakes on disc axels works fine.

Otherwise it all bolts right in. I did the swap on my '86. I kept the stock open carrier and added a Powertraxs Lock Right, which is how I know you need to modify a 26 spline case to run 28 spline axels in it.

RB83L69

Being a 89, there's a fairly low chance that the axles are actually 28 splines. Only about 20%, maybe less, of the 89s got the newer axles.

But that hardly matters; whatever they are, the carrier and axles together will go into your 85 rear, as long as the 85 has 3.23 or higher gears in it (3-series).

I'd strongly recommend changing the axle bearings and seals while you're at it.

twistydick

thanks, TKO. thats what i needed to know.props to another De. person.......yea, the 89 does have 28 splines, already pulled em.......and about swapping the whole rear, its easier for me just to swap the insides of the pumpkin & axles, maybe im weird(been told that before):rockon:

TKOPerformance

I didn't even realize that you were from DE too. Where are you from?

twistydick

im in millsboro,de. slower lower de., where the men are men and the chickens an pigs are scared sh@#$less i saw you were from upstate. rare to run across someone from this state on a message board

five7kid

iTrader: (14)

I can't imagine how that could be possible. Unless you don't worry about little things like contact pattern & backlash.

You said it, not me. I'd settle for uninformed.

twistydick

uninformed, hell.isnt that hard to set up backlash an all that.timeconsuming , maybe. im not into muscling around over a big hunk of iron around through my backyard. plus,the posi in the 89 isnt stock, so who knows if it was set up properly??id prefer to know it was done right . as i said also, the parts car was in an accident, so who knows if something, however slight the chance, could be out of whack with the housing?i also feeel like swapping the whole thing is the lazy shotgun method.if you use your way of thinking, if someone wants to swap cams, shouldnt they just change the whole engine? it is easier , but sorta stupid.i, for one,like workin on my car. i know whats been done and done right.but uninformed, i dont think so.im not some 18 yr old whos got his first set of wheels, been wrenching since i was 13 and im 33 now.built quite a few cars, but never wanted a slow mid 80s camaro.but got a deal and like the car, but know little to nothing about the cars specifics themselves(what fits what, etc.)so, i figured it wouldnt hurt to ask people who know. hell, i put 3.73s n posi in my 72 chevelle and so far got 53000 miles,but for an uninformed person to do it i guess i was just lucky.man, some people on here need to stop treating people like idiots.

five7kid

iTrader: (14)

Please accept my apologies.

You hadn't indicated anything in what you had said up to that point that you had experience in setting up rears.

There are a lot of people here who truely are inexperienced & uninformed that make assumptions (and it seems especially about hypoid gears) that end up getting them into trouble.

Obviously I made assumptions in this case that weren't true. Better safe than sorry, but sorry again for the offense. Certainly none was intended.

twistydick

its ok, kid. i probly went off the deep end anyway. i tend to rant when someone assumes i dont know what im doing, so sorry for that.i didnt take into account that there are alot of people on here who have little to no skills or mechanical experience.theyre probly the majority.

TKOPerformance

Heck, it's rare to run into someone from Delaware anywhere but Delaware! 2nd smallest state and all, but the best as far as I'm concerned. I'm from Newark, U of D central, but I don't live in the city limits, so it's usually tolerable. I've heard of Milsboro, but I'm not 100% sure where it is. Are you north or south of Dover?

There are a lot of newbies on these boards, so it's always hard to tell what people do and don't know. I've made the mistake of thinking people were less knowledgeable than they are plenty of times. I just try to treat eveyone with tact and not start name calling and acting like some know it all jackinix. That's what turns a thread from an informative forum into an argument that helps no one.

twistydick

im south of dover TK. about 15 mile from rehobeth beach.i know what you mean about not running into people from here.weird thing is, i lived in ft. hood texas for awhile and was talking to this girl( in of all places, a strip club) and she was from Dover. that knocked me for a loop.i never figured anyone in Texas had even heard of De. you said it. alot of people on here dont know what tact means.they automatically assume , instead of asking.ive seen that alot, just cruising threads. i did tend to go off on five7, though.and he did apologize for assuming i didnt know what i was doing.that just sets me off, unless they let me know theyre kidding.(j/k, smileys, whatever.)glad to here youre not in the city. i feel for anyone living in the thick of it.

TKOPerformance

Okay, I know where Rehoboth is, though I don't go there much. I'm not much of a beach guy. Porobably comes from being raised around boats. I usually go down once a year wether I need it or not.

Do you drag race at all? I try to get to Cecil County once a month during the good season if I can. Never works out like that though : )

BTW, I had this girl convinced that Delaware was one of the US Virgin Islands once. It amazes me that people don't know all 50 states!

twistydick

havent been to the drags in a long time. been into trucks for the last few years.used to live 3 miles from cecil dragway.gonna go to the delmar track down here when it opens up this season so i can see what the great white slug will do.used to run my plum crazy duster at cecil, but that was forever ago. man i loved that car.built 360 ,3.73, poppin low 12s, had the craziest sounding cam.sounded like an alky car.just a serious lack of traction.my buddy called her purple haze, cause when i launched all you saw was purple surrounded by tire smoke.ah well, the woman who said she didnt see the stop sign ended that. i told an army friend of mine once i was from de. he wanted to know what state that was in!!!! i thought they had to take a test?!?!

TKOPerformance

I will probably head down to Delmar at some point this coming season. I've got a friend that has a sick '92 Firebird that was running high 8s last year with a 409 small block. He's got a 632 big block in the works and wants to run in the Quick 8 contest down there. I'll probably tag along if he makes it this year. The motor isn't nearly finished yet though, so I don't know if it will pan out tis year or not.

It really sucks when morons behind the wheel end the life of a great car. The thing that really gets me is that she probably had no points on her license and was paying nothing for insurance while you and I pay a premium for being male, then a premium for a performance car, and *** forbid we ever got a speeding ticket!

I'm in to 4X4s too. I've got a K5 that is currently down with a blown trans. Looking to get it back on the road sometime this year. I really miss that truck.

ede

you 2 need to get a room, or at least take it to PMs or email so we have some sort of resemblenace to order around here. thanks

TKOPerformance

There's the old tactless ede!

Just kidding. The reason for the thread was pretty exhausted, so I guess I kind of hijacked it. My bad.