im going to look at a 75 malibu tomorrow

cromags76 wrote:so im going to look at a 75 malibu tomorrow hopefully getting the door glass, and a few other little parts, wish me luck lol anything i should look for on this?

JB2wheeler wrote:The Olds 10 inch rear end is what came in my 74 Elky from the factory. They ran out of Chevy rears so they just popped an Olds rear under it because it was available and they did not want to shut down the assemblyline. The Olds/Buick/Pontiac rear is the same as the Chevy except it does not have the C clips holding the axle in, it is bolted in and if you break an axle you don't have to worry about the wheel and axle flying out like a Chevy would. JB

JB2wheeler wrote:without the Posi, if you floor the car in snow or gravel the power will go to the wheel that is spinning the most and not giving you traction. With Posi, you have a series of clutches in the rear that forces the wheel with the most traction to take the load of power and get you going with less spinning. JB

cromags76 wrote:

JB2wheeler wrote:without the Posi, if you floor the car in snow or gravel the power will go to the wheel that is spinning the most and not giving you traction. With Posi, you have a series of clutches in the rear that forces the wheel with the most traction to take the load of power and get you going with less spinning. JB

alright i understand what you are saying but cant you put a mini spool in it or something? to get both wheels to spin

74Malibu383 wrote:Check out this entry on Wikipedia. Should get you all 'learned' up on rear ends.

http://en.wikipedia.org/wiki/Limited_slip_differential

And congrats on the smoking deal for all those parts. Good find.

Rago wrote:BlackChevelleSS or BlueChevelleSS would be the guys to ask on the mini spool thing. The 73 that I got from them had a mini spool at one time & they drove around on it. I believe it's now underneath Blue's 454 powered 73 SS that gets drove on the street. Basically they permanently lock both axles together causing them to spin at the same speeds no matter what. I would assume chirping tires when turning, tires wearing out quicker, & a PITA on the snow.

To check for positraction, lift the car & spin one wheel.

Both tires spin same direction > posi.
Opposite direction > non-posi.

I would personally ask to pull the diff cover & count the teeth on both the ring & pinion, inspect everything, get visual confirmation of posi or not. If you aren't allowed to do that, then there may be something the owner is hiding.

74Malibu383 wrote:I'm not sure why you want to swap one complete rear end without posi, for another without posi. Is something wrong with your current set up? Seems like a lot of work for no real gain.

JB2wheeler wrote:There is nothing wrong with an open rear end on roads that are not slick. They are a minor disadvantage in snow. If you use a good snow tire you should be all right. Of course if you will be drag racing you should have a posi. Forget the spool on the street, it wears out tires very quickly. What I used to do before they had posi was to weld the spider gears in the rear and that was the same as a spool. I drove that on the street without any problems, but kept tearing it out at the strip. JB