I wish people would stop quoting this article as a way to sell 9-inch rears. The article is so flawed. We have NO IDEA how worn those stock 10-bolts were in each of those cars. My old 10-bolt probably sucked 2 hp to spin it. You could turn it with your bare hand quite easily. It is entirely possible that the 10-bolt from the Trans/Am in the article was much tighter so there wasn't much of a change between going form a tight 10-bolt to a new 9-inch. Plus keep in mind that after a few hundred miles the rears will geta little easier to spin.

As far as the weight goes, my Dana60 weighs 185lbs. I have a spool, the aluminum rear cover, the hytuff axles/35 spline, and bigger studs. Install time was around 1.5 hours. The rear is capable of 1500+hp beatings.

 

When Steve from car craft and hot rod magazine did the test with 3 rears all the same ratio, all new... It wasn't like that article, story

 

Mine would hit over every bump even with the tunnel dented. I trimmed it and have been all good since. I think the lower the car the more it effects it.

Do a search for the diagram, BMR Posted it up but I can't seem to find my copy anymore, You basically need to change the bracket from 4 bolts to 2 bolts to bring it closer to the housing so it doesn't hit the tunnel.

Just a warning though if you trim the UMI bracket it won't be warrantied if it breaks. It's not a expensive part to replace but just have to repeat the process over again.

 

UMI's website has all the pics on installations of their parts. According to UMI tech support Jerry, their torque arm should fit the S60 with no fabrication/cutting whatsoever. I just finish installing my S60 but with a Spohn torque arm. I had to cut the top bracket plate of the Spohn t/a that mounts on the top side of the S60 in order to fit correctly(used the outer two holes). Hope this help some.

 

ok thanks i wonder who has the best deals on one bc ill be ready to order one this week

 

I'd give eric at Midwest chassis a call. That's where I got the best deal on my S60.

I might point out that the S60 is going to cost you some time, as they don't exactly have a warehouse of them ready to bolt in. They build them as the order comes in. I sent them my backing plates/reluctor rings and it took over a month to get back to me. I'd get Eric to get you his driveshaft instead of the strange shaft. It was a little cheaper, faster to get, and probably better than what Strange was offering at the time.

 

does anyone know if the wavetrac can be used in the s60?

so the difference is what?50lbs between an s60 an midwest fab 9?

 

Absolutely ZERO complaints with mine. It is actually quieter than my 10 bolt was.

I was informed that the S60 weighs more, but is more effecient than a 9".

 

I have been wondering the same thing about the wavetrac being if the wavetrac can be used with the S60.Hopefully someone can help us.

 

Yup!

Contact MWC for a smokin' deal on an S60. You'll have it in 3-4 weeks!

 

lol the car I own is the blue camaro that has the S60. Small world

 

Not to highjack the thread but I have a question. Do any pro stock, top funny cars or top fuel rails use 9" or s60 or is there a differnet rear end they use? Because I see more s60's in faster cars then 9" at the track.

So what about it takes more power to run a s60, aren't they supposed to be bullet proof. i say that because all I see is s60's in 7 sec cars. The way I'm looking at it when I order my s60, is I get another reason to make more power and go faster.

 

The S60 is actually more efficient than the 9" or the 12 bolt. Magazines put out very flawed information.

I run the S60. It's a great street/strip rear end. The TruTrac is a truely streetable posi unit with 35 spline axles making it much stronger than the 9" version. While many are listing the weight as a negative, if you think about where the weight is, it couldn't be in a better spot. My car hook RETARDED. My biggest concern is not going up on the bumper..........downhill............in the rain. LOL

The only major downfall is that there aren't alot of gear options and nothing with a closer ratio than 3.55. I would love to have a 3.2X ratio available.

 

Yeah you turbo people love your highway gears

 

Here are some examples of what the pros use:

http://www.markwilliams.com/housings.aspx

 

Both rears had quite a bit of miles on them, and were otherwise in perfect working condition. The test was done as scientifically and fairly as possible, however, that is not to say that if you were to replicate the same test you would have exactly the same results. Considering the many other factors that should go into choosing a rear, I wouldn't let this be the deciding factor. If efficiency is that great of a concern, than you should be looking at a 12-bolt.