SwampWS6

iTrader: (7)

Ok guys, Ive been doing a lot of reading to narrow down my results. I can get all 3 rearends for a reasonable price. All being complete rears. My car will be primarily a track car but some week days and or weekends I would cruise it. Im getting a lot of mixed emotions here on what to get. All have a lot of pro's and con's that are similar.

So taking into consideration cost, performance, quality and weight. I have an idea on what I want. Just getting you guys opinions.

Thanks

MidwestChassis2

iTrader: (1)

I'd toss the 12-bolt out the window and not consider it, just to many gear issues with it.. The s-60 is well priced and a beef cake of a rear end however with that beef cake you get a heavy rear end.. Stamped 9" I can't say to much bad about minus the weight factor of it being heavy as well and a stock style torque arm bracket.. The fabricated 9" gives you a much better torque arm mounting design plus better back brace and with all 9" rear ends more gear selections and the lightest option..

Hope that helps and if you have any other questions just feel free to ask...

ramairetransam

iTrader: (18)

track car, go with a 9inch or s60 . 9 inch has many more gear options . You can also get a fabricated 9inch and it will weigh about the same as the 10 bolt .

SwampWS6

iTrader: (7)

I am really digging the idea of going fab 9" because of the weight. But then the cost is a huge factor just because its not cheap. S60 strong and affordable but heavy as hell. Fab 9" is light and strong but pricey as hell. Decisions decisions. This is really hard. So the 12 bolt idea im just gonna toss. Mainly because of reviews and the cost between that and a S60

sweet99ss

iTrader: (41)

Looks like you got it down. Just have to decide what you can afford. If $ was no object I would have went with a fab 9" for weight, but I got my s60 much much cheaper than any 9".

BMR Sales2

iTrader: (40)

If the fabricated 9" is beyond your budget and the S60 weighs too much for your liking I would go with a stamped 9". It will end up being a little heavier than the fabricated 9" but not nearly as heavy as the S60 and will be more affordable than the fabricated 9". Also I wouldn't worry about the torque arm mounting on the stamped 9" as we have proven that you can run really fast and have a ton of power without that being an issue.

I don't personally like 12 bolts at all as they seem to have problem especially on higher powered vehicle. For me it would be a decision between the stamped 9" and S60 as I more budget oriented but it really comes down to what you want to do with the car.

ss performance

iTrader: (17)

I'm not sure why people slam the 12 bolt. They put them in lots of cars for many years. If they are set up properly they aren't any noisier than any other rear end.

The 9 inch has a big following because people see NASCAR and Pro Stock using them. They started using them because they could easily swap the gears & they didn't use "C-clips". After they started using them companies started producing the multiple gear ratios. They did start using the because of the availability of ratios.

When companies started offering 12 bolts that didn't require c-clips that eliminated one of the advantages of the 9-inch.

Due to the pinion position in the 9 inch it has the highest parasitic loss of any of the rears.

Saying the 9 inch can handle more power, maybe. I really don't know. But are you making so much power that it will be an issue?

The vast majority of people who have 9 inch rears never change the ratios. If your not going to swap your ratio then that option should not enter into the decision process.

I have been involved in racing for a looooooong time. I have only broken one rear, it was a 9 inch.

2 of my cars have 9 inch rears and I do swap my gears depending upon what I doing. My other car has a 12 bolt, it's not noisy and it holds up fine to over 400 rwhp.

SwampWS6

iTrader: (7)

Well money is an issue. Lol. i am not trying to go broke. At the same time Im trying to step in the right direction. So I think im leaning towards S60 unless I can find a stamped 9" for the same price. So I guess the search continues.

Has anybody heard anything from quick performance before. There housing, axles package for a 9" is under a grand. Im a hard core shopper when it comes to car parts..........

Thanks for the input Eric! Searching for a stamped 9" now.

guppymech

iTrader: (7)

Take a hard look at the S60. Strange sources the same mount brackets that GM used on the 10 bolt, that was a plus for me. As to the S60 weight over a stamped 9" it's 15lbs or so, not much and it's in the right spot for drag racing.

mjs1012

iTrader: (36)

I went with an s60 w/ s-trac on my car becuase of price, less parasitic loss than a 9" and how easy it is to swap in. I ordered it through Carl at CRP and he told me the added weight will not slow me down. It came to $2900 shipped with a new chromoloy driveshaft after I sent my origianl backing plates in off my 10 bolt. I am very happy with it and it is just as quiet as my stock rear.

Tuskyz28

What's the expected rwhp?

SwampWS6

iTrader: (7)

Thanks for that detailed info. That being said that the S60 being only 15lbs heavier, basically make it easier to choose. So now whichever I can find the cheapest is a good deal.


Im not knocking the 12 bolt at all. But I plan on keeping this car for the rest of my life. Which means more power. But me personally it will be more cost effective to go 12 bolt, but I also have seen more 12 bolts take a crap more than the other 2. Basically I have came to the conclusion that for longevity purposes (potentiallya lot higher hp ) I would do a S60 or 9".

SwampWS6

iTrader: (7)

Honestly no clue. Lol. But I am hoping for at least 550rwhp on 8-10#s, also considering its a LT1 on E85 with 10:5 CR.

Couldnt afford LS at time, but the money Ive spent so far I could have guaranteed myself at least a 800rwhp setup.

SwampWS6

iTrader: (7)

What do you mean by "less parasitic loss than a 9" "???

ssvert99

iTrader: (26)

The S60 comes with 35 spline axles right from the start. The center section that accepts 35 spline axles and strong enough to hold your power and transbrake and last into the future for you will cost upwards of 1200+ so all of the sudden a stamped 9" rear isn't that good of a value. If you are going to go with a stamped 9" rear the fabricated setup is not much more then.

None of the rearends are "bad" (although there is a 12 bolt I stay far away from), but it mostly depends on what your needs and budget are. When you consider people like Ray Litz, Brian Black, Ohio Boys, Ray Bulach, Josh Pratt, and Eddie Krawiec could have any rearend they wanted when their cars were built, they all chose MWC fabricated 9". At the same time we continue to sell Moser 9", Strange S60, and 12 bolt as well.

If you look at the facts, hands down the S60 is by far the best bang for the buck, especially through Feb 1st.

SwampWS6

iTrader: (7)

ramairetransam

iTrader: (18)

i did the fab 9 route from mid west chassis. , with buying one new backing plate , one used , adding a driveshaft , assembly , powder shipping and all that , stock width , 3 channel , 4800 i have into . To give you an idea.

Tuskyz28

Anything over 550rwhp I'll aim for the 9" with a back brace.

mjs1012

iTrader: (36)

Eats up less HP than a 9".

SwampWS6

iTrader: (7)

So the S60 eats up less hp than a 9"? I was under the impression that it was the other way around. I thought it was 12 bolt, 9" then S60. Starting with the least to the greatest hp eaten.

Well S60 all day then!