What rearend do I want?

So somebody on the Grassroots Motorsports forum clued me in to car-part.com.

Holy shit! It's an online junkyard shopping mall!

Now let's see... what do I need? Clicky clicky, awesome, found those VW bits I've been really needing!

What else do I need? REARENDS. I'm running out of patience with the bendariffic Mazda 7" and even worse, I'm running out of usable rearends.

What cars/years should I be looking for? I hear Toyota 8" a lot... where would I KNOW I'd be able to find one? I don't know anything about Toyota trucks at all.

Alternative: Is there a car rear I should be looking for? I'd like to preferably keep my 4x4.5 bolt pattern although 5x4.5 is doable.

Quote
Pete
So somebody on the Grassroots Motorsports forum clued me in to car-part.com.

Holy shit! It's an online junkyard shopping mall!

Now let's see... what do I need? Clicky clicky, awesome, found those VW bits I've been really needing!

What else do I need? REARENDS. I'm running out of patience with the bendariffic Mazda 7" and even worse, I'm running out of usable rearends.

What cars/years should I be looking for? I hear Toyota 8" a lot... where would I KNOW I'd be able to find one? I don't know anything about Toyota trucks at all.

Alternative: Is there a car rear I should be looking for? I'd like to preferably keep my 4x4.5 bolt pattern although 5x4.5 is doable.

I think most of their pick ups and $-runners had the 8" thing.

Chopping down the flange diameter and banging a few holes in hain't no big thang
If you search for the silly things with 31-32' OEM balloonie tires you might get lucky and snag sumpin wif a 4.56 stock.

2WD Toyota trucks have 7.5 inch ring gears. All 4WD trucks had 8 inch. This applies to second and third generation trucks. I don't know about the Tacomas.

---

Robert.

"You are way too normal to be on Rally Anarchy." Eddie Fiorelli.

ding ding toyota is the winner by a land slide.
I love them the stamped housing is awesome you can weld anywhere you want, gears galore the older
4 cylinder is a little narrower than the v6 rear end.

try http://www.pirate4x4.com/forum/ and some local 4x4 sites to you might pick up a free one.

There were some 2wd trucks w/ the 8" rear end, but not many, just the 1 TON. (in the narrower, older models) The 7.5" Toyota axle is very strong and has huge aftermarket support for gearing and diff's. It's just a bit wide for most compact cars.

-Jon

I've owned a few 2wd Toyota trucks ('84-'88 chassis) over the years. From what I've seen (with the 2wd models), the 7.5" rear axles were fitted to 5-speed models, and the 8" rear axles were fitted to 4-speed models. Typically the 5-speeds had 3.73 gears, and the 4-speeds had 3.07 gears stock.

For those years at least, the axle width is roughly 56" from drum to drum.

Everything changes with the turbo models of course, which had the slightly beefier 4-pinion 8" rears and alternate ratios. I seem to recall they used the 3.42 ratio.

The 4wd models used a wider 8" axle housing with a 6-lug bolt pattern, but with far more ratio options (4.10, 4.37, 4.56, 4.88).



Edited 2 time(s). Last edit at 11/16/2010 10:17AM by Ascona73.

What about ford 7.5"?

7.5" Ford or GM can certainly be made to work.

The nice thing about the Toyota axle is it's well-supported in the aftermarket, it's lightweight, it's strong, and it's a front-loader (like a 9" Ford). So if you have a spare chuck, diff, and gearset...you can do a ratio swap in about 20 minutes in the car.

dana 60

Quote
Gravity Fed
dana 60

8" Toyota is just the right amount of overkill.
and a good size.

And I already have brackets for links and shock mounts made..

What more doya want?

Quote
dirty_d
What about ford 7.5"?

Thanks to C4C, there's a metric scadload of trak-lok, 8.8", disc brake Explorer rears out there. Cheaper and more plentiful than the 7.5 and they pretty much all have 3.73:1 gears which is what I want. And the right bolt pattern too.

But they're a cast center section which will make it super hard for me to put my suspension on it. And the axle tubes are 3.25" and seriously thick. Might be too much overkill. The rearend might outweigh the rear half of the car at that point.

BUT American rearend means a ~$100 driveshaft instead of a ~$400 one.



Edited 1 time(s). Last edit at 11/16/2010 01:11PM by Pete.

Quote
Pete

Quote
dirty_d
What about ford 7.5"?

Thanks to C4C, there's a metric scadload of trak-lok, 8.8", disc brake Explorer rears out there. Cheaper and more plentiful than the 7.5 and they pretty much all have 3.73:1 gears which is what I want. And the right bolt pattern too.

But they're a cast center section which will make it super hard for me to put my suspension on it. And the axle tubes are 3.25" and seriously thick. Might be too much overkill. The rear end might outweigh the rear half of the car at that point.

BUT American rearend means a ~$100 driveshaft instead of a ~$400 one.

Um last time I checked the drive shaft was a round tube and it did not care what it was connected too
so if the need to spend 400 on one thats cool.

call any drive line shop and they have on hand 1310 yokes for the larger Toyota flange and if need be
call jvab or me and we will find or sell you one for a supra with a smaller bolt pattern.

also I like 8.8 rear ends i have had a hand full of them. but its something I would not want in my car.
like you said, big tubes and heavy casting. 2 pinion diff bla. and the way the carrier is cast its kind of
scary looking. You wount have the problem the off road world dose like busted carriers, broken shafts
pulling out of the axle tube and running away.

You just have to dream... This is a Toyota 7.1" rear, 4x4.5", 4.10:1.
-Jon

Quote
jrally
You just have to dream... This is a Toyota 7.1" rear, 4x4.5", 4.10:1.
-Jon

What's the diameter of the axles?
And who needs 4.10? Going to Bonneville?

Or does nobody understand how short gearing in the 4.88 to 5.15 range works?

nice reinforcement that should be good for the new dreamliner

thats some cool stuff

http://www.google.com/imgres?imgurl=http://www.off-road.com/aimages/articlestandard/toyota/062006/305968/5_center_section.jpg&imgrefurl=http://www.off-road.com/trucks4x4/article/articleDetail.jsp%3Fid%3D305968&usg=__pF7VqVcTVe0epRG5VL7_WxLG7Mw=&h=225&w=300&sz=12&hl=en&start=19&zoom=1&um=1&itbs=1&tbnid=vXKohLkM4HNNiM:&tbnh=87&tbnw=116&prev=/images%3Fq%3Dtoyota%2Bfabricated%2Brear%2Baxle%26um%3D1%26hl%3Den%26client%3Dopera%26rls%3Den%26tbs%3Disch:1