I have the opportunity to buy the following third member...http://phoenix.craigslist.org/wvl/pts/1021362263.html

I will likely just be buying the third member, not the entire rear end.

My question is: will this fit in my 86 4x4 pickup?

Does this seem like a good deal?

 

if its a 5 lug axle, wouldnt that be the 7.5" rear dif?

 

my truck has 6 lugs...

 

well, yes, i understand that, but the axle in the ad says its a 5 lug...

 

yep.. i bet its a 7.5" 27 spline 2wd rear end....

 

same i was thinking... also, in the add it mentions that it would be good for the pre-runner guys...

 

I emailed him to ask him if its a 7.5" or an 8"

Just to be sure... if it is a 7.5", then it is definitely incompatible with my truck, right?

 

yea it is it wont fit

 

And in 8" third members there are a couple variations and they are not easy interchanges.

 

huh??? how???

any 8" dif should fit in an 8" carrier... right?

 

There are 8" diffs with 5 lug. I believe they are all 2wd with either the 6cyl, 1ton, and there was another but I cannot remember it... So it could be an 8" or 7.5".

 

so will the 8" 5 lug fit onto my truck which has an 8" 6 lug?

 

that 8" 2wd are from 1 ton regarless of the outer lug pattern... yes they will fit.. an toyota 8" is a toyota 8"

 

There are two pinion 8" differentials and there are four pinion 8" differentials. Then there is something called the "high pinion" differential. I think I was wrong about substituting between the 2 pinion and 4 pinion rear differentials -- it appears to not be a problem. For some reason I had myself convinced that they had different axle spline counts.

 

2 pinion = 4cyl diff

4 pinion = v6 diff, did come w/ 4.88 gears, i did the swap on my 86, they came out of a 93 runner for $300 front and rear. no set up just swap thirds. then you can get a lunch box locker for around $250 and have a locked rear and 4.88s for a $550 a lot faster, easier and cheaper.

 

You're setup would be ideal, but I've had trouble tracking down original 4.88s. Did you find them in a junkyard? Or did you just wait to find them online?

 

well I just heard back from the seller. It's a 7.5", so i guess switching it out is not compatible.

However, he is selling the entire rear end. Will it work if I switch out everything? Or will I have difficulties elsewhere, such as in connecting the rear drive shaft?

 

It's a 2wd then it's more than likely spring under, so that would need to be changed. Also being a 7.5" I believe it's 27 spline - so you couldn't change the axleshafts to keep the 6 bolt (31 spline), you would end up with 6bolt front and 5 bolt rear - so in short no!

 

just keep searching...

 

found them on the list, but there are plenty of 2nd gen runners @ the boneyards