Which Rear End to get for a 6 speed car?
05-25-2010, 05:10 PM
#61
If you're looking for something bullet proof and light weight a spool is what you want. The downside to that is accellerated tire wear and slight popping on tight turns. Or you could go with a locker which is also very strong and it's easier on the tires because it unlocks the diff when you turn, but again you will have slight popping when it locks/unlocks. Either way, you'll have to sacrifice something to get what you're looking for. My advice would be to find someone near you that has a spool or locker and take a ride with them to see if it's something you can deal with or not.
btw I was talking about a locker in that other post.
btw I was talking about a locker in that other post.
btw Thx for all the knowledge ur giving me though NSSANEI've had several customers have problems with lockers and their six speed manual transmissions. If you rotate a driveshaft back and forth that is ahead of a locker, it will appear that there is way to much gear backlash. This is because of the locker and is normal. This extra play can cause a manual transmission to have problems shifting at part throttle driving. Wide open throttle shifts are not a problem. This problem doesn't appear to everyone who has a locker and a manual, but out of all the lockers I have sold, it has presented itself several times. Bob
05-26-2010, 05:35 AM
#62
Go with a billet Trac Loc from Yukon. They will hold up to a decent amount of power and are fully rebuildable. Mine drives like stock with no chatter at all. Midwest Chassis highly recommends them for street / strip use in a M6 car. MWC 9" is the only way to go for a rear in my opinion, it's the best deal for a rear setup and the lightest.
05-26-2010, 03:50 PM
#64
It's a rear end not a transmission. I feel 4.11's in a 6 speed make a great daily driver, so much easier to drive around in town. I say MWC 9" because it comes with a chromoly torque arm if you do not already have one ($350+ from others) and a transmission relocation bracket ($200+ from others). Make sure you get a quiet street gear like Yukon and their billet trac loc and your car will drive much better than stock. You can also keep your traction control and abs. I feel its the best bolt in rear as it has brake line clips, parking brake brackets and it bolts in like stock.
They also look badass. I weighed my car before I removed the 10 bolt (3540lbs) and after the swap it still weighed 3540. Other rears will add weight except maybe a moser m9 $$$. Regardless of which rear end you are going to be spending quite a bit of cash, might as well get the lightest / strongest most complete package. Not to mention MWC has some of the best customer service I have ever dealt with, very helpful guys! Stay away from spools and lockers for a daily driver. Your car is similar to mine, I drive it all the time when it's not snowing, and I'm not one to compromise on driveability.
They also look badass. I weighed my car before I removed the 10 bolt (3540lbs) and after the swap it still weighed 3540. Other rears will add weight except maybe a moser m9 $$$. Regardless of which rear end you are going to be spending quite a bit of cash, might as well get the lightest / strongest most complete package. Not to mention MWC has some of the best customer service I have ever dealt with, very helpful guys! Stay away from spools and lockers for a daily driver. Your car is similar to mine, I drive it all the time when it's not snowing, and I'm not one to compromise on driveability.
05-26-2010, 04:55 PM
#65
It's a rear end not a transmission. I feel 4.11's in a 6 speed make a great daily driver, so much easier to drive around in town. I say MWC 9" because it comes with a chromoly torque arm if you do not already have one ($350+ from others) and a transmission relocation bracket ($200+ from others). Make sure you get a quiet street gear like Yukon and their billet trac loc and your car will drive much better than stock. You can also keep your traction control and abs. I feel its the best bolt in rear as it has brake line clips, parking brake brackets and it bolts in like stock.
They also look badass. I weighed my car before I removed the 10 bolt (3540lbs) and after the swap it still weighed 3540. Other rears will add weight except maybe a moser m9 $$$. Regardless of which rear end you are going to be spending quite a bit of cash, might as well get the lightest / strongest most complete package. Not to mention MWC has some of the best customer service I have ever dealt with, very helpful guys! Stay away from spools and lockers for a daily driver. Your car is similar to mine, I drive it all the time when it's not snowing, and I'm not one to compromise on driveability.
They also look badass. I weighed my car before I removed the 10 bolt (3540lbs) and after the swap it still weighed 3540. Other rears will add weight except maybe a moser m9 $$$. Regardless of which rear end you are going to be spending quite a bit of cash, might as well get the lightest / strongest most complete package. Not to mention MWC has some of the best customer service I have ever dealt with, very helpful guys! Stay away from spools and lockers for a daily driver. Your car is similar to mine, I drive it all the time when it's not snowing, and I'm not one to compromise on driveability.
All your questions have been answered and there's a ton of great advice here. 
05-26-2010, 08:44 PM
#67
I just put my rear end in last weekend. I feel our 1st gear ratio with a 3.42 goes way too fast 55 mph+. It takes way less effort to drive around town, I just feel these gear ratios are better suited for a m6. I think I will actually see better gas mileage in town or atleast the same. As far as highway driving 6th @ 70 mph is what 1800 rpm ?? That's still way lower than an A4 cruises. It used to be 1500 rpm and really our cars do not have a ton of torque to cruise at that low of rpm in 6th, especially with a cam where surging can occur. . Now cruising at 70 will take less throttle. I just installed my rear end and our track opens june 4th. I will keep you updated how the trac loc holds up with 6000 rpm clutch dumps. My rear end holding up is the least of my concerns.
05-26-2010, 09:01 PM
#68
I just put my rear end in last weekend. I feel our 1st gear ratio with a 3.42 goes way too fast 55 mph+. It takes way less effort to drive around town, I just feel these gear ratios are better suited for a m6. I think I will actually see better gas mileage in town or atleast the same. As far as highway driving 6th @ 70 mph is what 1800 rpm ?? That's still way lower than an A4 cruises. It used to be 1500 rpm and really our cars do not have a ton of torque to cruise at that low of rpm in 6th, especially with a cam where surging can occur. . Now cruising at 70 will take less throttle. I just installed my rear end and our track opens june 4th. I will keep you updated how the trac loc holds up with 6000 rpm clutch dumps. My rear end holding up is the least of my concerns.
05-26-2010, 09:10 PM
#69
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The difference in gas mileage between 3.73's and 4.11's is very small. I can still do well over 150 in 5th gear with my 4.11's, which is really way more than anyone needs. And yes the 3.23's will make it a little slower but if it's just temporary I wouldn't worry about it.
05-26-2010, 09:15 PM
#70
The difference in gas mileage between 3.73's and 4.11's is very small. I can still do well over 150 in 5th gear with my 4.11's, which is really way more than anyone needs. And yes the 3.23's will make it a little slower but if it's just temporary I wouldn't worry about it.
05-26-2010, 09:49 PM
#72
well i've found a stock rear housing and all except the backing plates with supposedly 2o,ooo miles on it never been dragged or ran (too) hard, i believe him from talking to him and seeing the pics of the diff opened up just he wants 350 + shippping and shipping would be around 300 im pretty sure. so you'd still wait?
05-26-2010, 10:42 PM
#73
There's not too much talk about the S60 in here, and it might be because it's the heaviest of all the rear end options. I will say this about it though: It's probably going to be the strongest, and it's also going to be the cheapest to get into.
The S60 will come with a truetrac unless you pay (or subtract) for another posi/locker/spool option. The truetrac in the S60 isn't as problematic as the other truetracs on the market as it's a 35 spline. Unless things have changed, then you can count the number of folks who have torn theirs up at the track on one hand... and even then I don't think there's been a complete failure, only one that doesn't track strait any more. I want to say all the other negative feedback with truetracs in S60s come from general defects, not failures from exceeding the power threshold. For an M6 with gobs of power, a grippy 12 bolt killing-clutch, and sticky tires then the S60 would be hard to beat, unless you're trying to keep things light weight.
It's heavier, but the weight is in the right spot. It's common for a vehicle to trap a few MPHs faster with this rear end too, even though it robs more power than a 9" or 10 bolt. The price is also excellent! With a beastly driveshaft from Midwest Chassis it was cheaper than any other rear end built to withstand the same kind of abuse that the S60 can take without any extras. There's pretty much nothing you can do to strengthen it... unless you want to get a spool. No need for a performance dif cover, no need for a back brace. I did get a chromemoly yolk. I think with every option that I could put on it (4.10 gears, truetrac, aluminum cover [for looks
], chromomoly yolk, and PST driveshaft), sending in my backing plates/reluctor rings, and shipping it was significantly less than anything else I could find. I got it from Eric at MWChassis, who cut me a great deal, as well as talked over the pros/cons of his fab 9 vs the S60. I was really on the fence but the S60 just happend to fit my needs and budget a little better.
Hell, it's a 3/4 ton truck rear end, lol.
While it is heavier, it's going to be stronger (for the most part) and cheaper. Out of all these rear ends the S60 is also the only one to my knowledge that's still being used in OEM vehicles to date, like the SRT10 truck.
The S60 will come with a truetrac unless you pay (or subtract) for another posi/locker/spool option. The truetrac in the S60 isn't as problematic as the other truetracs on the market as it's a 35 spline. Unless things have changed, then you can count the number of folks who have torn theirs up at the track on one hand... and even then I don't think there's been a complete failure, only one that doesn't track strait any more. I want to say all the other negative feedback with truetracs in S60s come from general defects, not failures from exceeding the power threshold. For an M6 with gobs of power, a grippy 12 bolt killing-clutch, and sticky tires then the S60 would be hard to beat, unless you're trying to keep things light weight.
It's heavier, but the weight is in the right spot. It's common for a vehicle to trap a few MPHs faster with this rear end too, even though it robs more power than a 9" or 10 bolt. The price is also excellent! With a beastly driveshaft from Midwest Chassis it was cheaper than any other rear end built to withstand the same kind of abuse that the S60 can take without any extras. There's pretty much nothing you can do to strengthen it... unless you want to get a spool. No need for a performance dif cover, no need for a back brace. I did get a chromemoly yolk. I think with every option that I could put on it (4.10 gears, truetrac, aluminum cover [for looks
], chromomoly yolk, and PST driveshaft), sending in my backing plates/reluctor rings, and shipping it was significantly less than anything else I could find. I got it from Eric at MWChassis, who cut me a great deal, as well as talked over the pros/cons of his fab 9 vs the S60. I was really on the fence but the S60 just happend to fit my needs and budget a little better. Hell, it's a 3/4 ton truck rear end, lol.
While it is heavier, it's going to be stronger (for the most part) and cheaper. Out of all these rear ends the S60 is also the only one to my knowledge that's still being used in OEM vehicles to date, like the SRT10 truck.
Last edited by KurtRardin; 05-26-2010 at 10:47 PM.
05-27-2010, 06:52 AM
#75
http://shop.brutespeed.com/Moser-M9-...y-Complete.htm
http://www.powertvonline.com/video_detail.php?mId=2901 Video
It too comes with it's own torque arm and cross member plus, when you place the order it is shipped out just two days later! Bob
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ATI ProCharger and Moser Sales 260 672-2076
PM's disabled, please e-mail me
E-mail: brutespeed@gmail.comob@brutespeed.com
https://brutespeed.com/ Link to website
06-06-2010, 09:18 PM
#76
There's not too much talk about the S60 in here, and it might be because it's the heaviest of all the rear end options. I will say this about it though: It's probably going to be the strongest, and it's also going to be the cheapest to get into.
The S60 will come with a truetrac unless you pay (or subtract) for another posi/locker/spool option. The truetrac in the S60 isn't as problematic as the other truetracs on the market as it's a 35 spline. Unless things have changed, then you can count the number of folks who have torn theirs up at the track on one hand... and even then I don't think there's been a complete failure, only one that doesn't track strait any more. I want to say all the other negative feedback with truetracs in S60s come from general defects, not failures from exceeding the power threshold. For an M6 with gobs of power, a grippy 12 bolt killing-clutch, and sticky tires then the S60 would be hard to beat, unless you're trying to keep things light weight.
It's heavier, but the weight is in the right spot. It's common for a vehicle to trap a few MPHs faster with this rear end too, even though it robs more power than a 9" or 10 bolt. The price is also excellent! With a beastly driveshaft from Midwest Chassis it was cheaper than any other rear end built to withstand the same kind of abuse that the S60 can take without any extras. There's pretty much nothing you can do to strengthen it... unless you want to get a spool. No need for a performance dif cover, no need for a back brace. I did get a chromemoly yolk. I think with every option that I could put on it (4.10 gears, truetrac, aluminum cover [for looks], chromomoly yolk, and PST driveshaft), sending in my backing plates/reluctor rings, and shipping it was significantly less than anything else I could find. I got it from Eric at MWChassis, who cut me a great deal, as well as talked over the pros/cons of his fab 9 vs the S60. I was really on the fence but the S60 just happend to fit my needs and budget a little better.
Hell, it's a 3/4 ton truck rear end, lol.
While it is heavier, it's going to be stronger (for the most part) and cheaper. Out of all these rear ends the S60 is also the only one to my knowledge that's still being used in OEM vehicles to date, like the SRT10 truck.
The S60 will come with a truetrac unless you pay (or subtract) for another posi/locker/spool option. The truetrac in the S60 isn't as problematic as the other truetracs on the market as it's a 35 spline. Unless things have changed, then you can count the number of folks who have torn theirs up at the track on one hand... and even then I don't think there's been a complete failure, only one that doesn't track strait any more. I want to say all the other negative feedback with truetracs in S60s come from general defects, not failures from exceeding the power threshold. For an M6 with gobs of power, a grippy 12 bolt killing-clutch, and sticky tires then the S60 would be hard to beat, unless you're trying to keep things light weight.
It's heavier, but the weight is in the right spot. It's common for a vehicle to trap a few MPHs faster with this rear end too, even though it robs more power than a 9" or 10 bolt. The price is also excellent! With a beastly driveshaft from Midwest Chassis it was cheaper than any other rear end built to withstand the same kind of abuse that the S60 can take without any extras. There's pretty much nothing you can do to strengthen it... unless you want to get a spool. No need for a performance dif cover, no need for a back brace. I did get a chromemoly yolk. I think with every option that I could put on it (4.10 gears, truetrac, aluminum cover [for looks
], chromomoly yolk, and PST driveshaft), sending in my backing plates/reluctor rings, and shipping it was significantly less than anything else I could find. I got it from Eric at MWChassis, who cut me a great deal, as well as talked over the pros/cons of his fab 9 vs the S60. I was really on the fence but the S60 just happend to fit my needs and budget a little better. Hell, it's a 3/4 ton truck rear end, lol.
While it is heavier, it's going to be stronger (for the most part) and cheaper. Out of all these rear ends the S60 is also the only one to my knowledge that's still being used in OEM vehicles to date, like the SRT10 truck.
06-07-2010, 12:39 AM
#78
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As far as the issue with the bolts coming loose. My bolts came loose once. I removed them, cleaned them real good and reinstalled them with red locktite. No issue since. This is a small problem, that can be fixed with safety wire if needed. I don't think they will but if they ever back out again I will safety wire them and be done with it.
06-07-2010, 12:36 PM
#80
We do suggest the S60 as the best option if one is not looking for one of our fabricated rear ends. We have had good luck offering the S60 even though we can get anyone into a Moser rear end as well.
If someone is thinking about any rear end please PM me. Not only are you getting long lasting advice on current items on the market you are talking to people still out there abusing the parts they sell and will be for a long time.
We have two current builds going on right now and will be trying new things on our shop cars.
Thanks for the kind words from everyone.
If someone is thinking about any rear end please PM me. Not only are you getting long lasting advice on current items on the market you are talking to people still out there abusing the parts they sell and will be for a long time.
We have two current builds going on right now and will be trying new things on our shop cars.
Thanks for the kind words from everyone.