lbj Posted November 5, 2013 Report Share Posted November 5, 2013 I have a Centerforce dual disc that is so freaking loud when you push the clutch pedal in, that I am forced to replace it with only 7K miles on it. It isn't the trow out bearing, it's the disc. RWR is recommending the McLeod like the one you have. How is yours working out? Link to comment Share on other sites More sharing options...
MMcGuirk Posted November 6, 2013 Author Report Share Posted November 6, 2013 I have a Centerforce dual disc that is so freaking loud when you push the clutch pedal in, that I am forced to replace it with only 7K miles on it. It isn't the trow out bearing, it's the disc. RWR is recommending the McLeod like the one you have. How is yours working out? This is my second McLeod RST, I put one in my 06 GT in 2009. Other than the normal disc chatter if you lug below 1500 RPMs in any gear other than first, they are both noise free. The GT350's pedal actually has a softer feel than the 06. Must be a difference in slave cylinders between the years. Link to comment Share on other sites More sharing options...
lbj Posted November 7, 2013 Report Share Posted November 7, 2013 As the days have gone by, are there any other things you are noticing, pro or con, about this project? Link to comment Share on other sites More sharing options...
MMcGuirk Posted November 7, 2013 Author Report Share Posted November 7, 2013 As the days have gone by, are there any other things you are noticing, pro or con, about this project? Other than the cuts and scrapes are healing on my hands, nothing. Link to comment Share on other sites More sharing options...
lbj Posted November 19, 2013 Report Share Posted November 19, 2013 Well crap, my MT82 just blew up a bearing. Tonight, I will have the official word that it's a goner. Looks like a Magnum XL and 4:10 rear end is my immediate future. The only misgiving I have here is the 4th gear in the XL looks to be a bit anemic based on it being 1:1. Link to comment Share on other sites More sharing options...
NJPat Posted November 19, 2013 Report Share Posted November 19, 2013 It was inevitable. 4th gear is fine - no performance issues you only need 3.73 gears Link to comment Share on other sites More sharing options...
MMcGuirk Posted November 20, 2013 Author Report Share Posted November 20, 2013 Stay away from the 4:10s unless you plan to race. The gear spacing with 3.73 is perfect. Link to comment Share on other sites More sharing options...
mikeljgt500kr Posted November 20, 2013 Report Share Posted November 20, 2013 I don't think I have ever had a tranny where 4th gear or the final gear wasn't 1:1. Link to comment Share on other sites More sharing options...
lbj Posted November 20, 2013 Report Share Posted November 20, 2013 Stay away from the 4:10s unless you plan to race. The gear spacing with 3.73 is perfect. Do you think that your Mustang is as quick as it was with the MT82 in it? I don't want to spend a bunch of money and end up slower. That would be a downgrade. I have been crunching numbers using the gearing of the Tremec and MT82 transmissions using my current MT82 as a base with my 3:73 setup. The numbers become interesting using different rear gear combos. http://www.f-body.org/gears/ Link to comment Share on other sites More sharing options...
JT93 Posted November 20, 2013 Report Share Posted November 20, 2013 I'm looking to do the XL upgrade myself this winter. I'm looking at the 2.66 ratio option. but I'm going to use the 5th and 6th gear from the 2.97 option. I talked to several trans and speed shops in my area about the choice and they all agreed it was the best option for a street car that makes numerous trips to the track every year. I've also been thinking about only changing out the 5th gear and having a big OD gear for long road trips. It's pretty cheap to change out the gears before install, so just something to give some thought to. Link to comment Share on other sites More sharing options...
MMcGuirk Posted November 20, 2013 Author Report Share Posted November 20, 2013 I don't think I have ever had a tranny where 4th gear or the final gear wasn't 1:1. Every GT500 from 2007 on has a 1:1 4th gear, overdrive 5th and 6th is how you go 180 with 3.73s Link to comment Share on other sites More sharing options...
MMcGuirk Posted November 20, 2013 Author Report Share Posted November 20, 2013 Do you think that your Mustang is as quick as it was with the MT82 in it? I don't want to spend a bunch of money and end up slower. That would be a downgrade. I have been crunching numbers using the gearing of the Tremec and MT82 transmissions using my current MT82 as a base with my 3:73 setup. The numbers become interesting using different rear gear combos. http://www.f-body.org/gears/ It's quicker! Less wheel spin in 1st and 2nd Link to comment Share on other sites More sharing options...
NJPat Posted November 20, 2013 Report Share Posted November 20, 2013 I agree with MM it's now totally useable in first and second gears (with the Torsen, of course) Link to comment Share on other sites More sharing options...
lbj Posted November 20, 2013 Report Share Posted November 20, 2013 Other than 1st gear in my MT82, I have good traction currently. The reviews for quickness gained or lost across the net seem to be a mixed bag. If I can figure out the formatting, maybe I will put up the numbers later today and we can examine them. I have tailored my Mustang to run at 5,000ft altitude with the pulley swap recently. And now, it would appear I need to do the same with the transmission and rear gearing. Link to comment Share on other sites More sharing options...
lbj Posted November 21, 2013 Report Share Posted November 21, 2013 I used this calculator: http://www.f-body.org/gears/ Input for tires was 285/40/18 with redline at 7000. MT82 gearing as follows: 3.66 2.43 1.69 1.32 1 0.65 The Tremec gearing as follows: 2.97 2.10 1.46 1 0.80 0.63 With my current arrangement MT82 and 3:73 gears, the top MPH speeds in the gears were: 41 62 89 114 151 232 Tremec TUKT 12021 close ratio transmission with 4:10 gears top MPH speeds were: 46 65 94 137 171 217 I like these numbers and think I am going this direction. Link to comment Share on other sites More sharing options...
lbj Posted November 22, 2013 Report Share Posted November 22, 2013 OK, I ordered my kit from Modern Driveline. I hope it gets here soon. Link to comment Share on other sites More sharing options...
Don Johnston Posted November 22, 2013 Report Share Posted November 22, 2013 A YouTube video of the installation exchange would be nice. Link to comment Share on other sites More sharing options...
MMcGuirk Posted November 22, 2013 Author Report Share Posted November 22, 2013 A YouTube video of the installation exchange would be nice. ? Link to comment Share on other sites More sharing options...
lbj Posted November 22, 2013 Report Share Posted November 22, 2013 My current 3:73s are making a lot of noise on decel, so with the swap, I am going to 4:10s. I mean, I was going to have to open up the Torsen anyway. If I don't like how everything works out, I can always go back to 3:73s. For the most part, my situation is a bit unique in that I run at 5000ft of altitude, the car is not a DD, and when I do drive it, I like to open it up a little. I liked my gear spacing and quickness of my MT82 and 3:73s and am trying to replicate things to be close to what I had. Have I made the right choices? Time will tell. My Mustang as built from SA was never an easy driving DD type car and a bit of a handful, and I am looking to keep it that way. The math is not always perfect and reflective of the real world. However, the math tells me I should be running in gears 1-3 like I had an MT82 with a 3:55 rear end. MT82 with 3:55s: 43 65 94 114 151 232 Tremec close ratio with 4:10s: 46 65 94 137 171 217 Link to comment Share on other sites More sharing options...
lbj Posted November 23, 2013 Report Share Posted November 23, 2013 Question for MMcGuirk. Do you remember whether you used the half inch spacer with your slave cylinder or not. Apparently there is some debate over whether to reuse and reinstall that spacer when converting over to the Tremec XL Magnum. Link to comment Share on other sites More sharing options...
MMcGuirk Posted November 25, 2013 Author Report Share Posted November 25, 2013 Question for MMcGuirk. Do you remember whether you used the half inch spacer with your slave cylinder or not. Apparently there is some debate over whether to reuse and reinstall that spacer when converting over to the Tremec XL Magnum. The spacer is required. Link to comment Share on other sites More sharing options...
lbj Posted November 26, 2013 Report Share Posted November 26, 2013 Thanks. The wrong clutch was sent from McLeod (GT500), but the proper GT one should arrive the same day. The Tremec kit was picked up by Conway last Friday and may even be delived tomorrow, according to the estimated delivery at their website. I went with the polished chrome shifter sleeve and white Tremec ball knob. Link to comment Share on other sites More sharing options...
MMcGuirk Posted November 26, 2013 Author Report Share Posted November 26, 2013 Thanks. The wrong clutch was sent from McLeod (GT500), but the proper GT one should arrive the same day. The Tremec kit was picked up by Conway last Friday and may even be delived tomorrow, according to the estimated delivery at their website. I went with the polished chrome shifter sleeve and white Tremec ball knob. Shelby has a knob in the correct pitch for the Tremec shifter 12 x 1.75 Modern Driveline sent me a GT500 McLead clutch and flywheel and it works great. The GT clutch is 23 spline and you need a GT500 clutch 26 spline to mate to the magnum XL. I would give Bruce a call. Link to comment Share on other sites More sharing options...
lbj Posted November 26, 2013 Report Share Posted November 26, 2013 Is that shift knob this one? http://www.shelbystore.com/Shelby-Six-Speed-White-Shift-knob-p/7s3z-7213-w6-75.htm The description says it only fits the Shelby shift lever. Is that the one? Did you get the a different shift lever other than what came with your Trmec? I talked with Bruce yesterday and he's the one who reordered whatever I need. Link to comment Share on other sites More sharing options...
lbj Posted November 27, 2013 Report Share Posted November 27, 2013 That was fast, the Tremec and drive shaft arrived at RWR today. The clutch should arrive tomorrow. I ordered the SA Shifter ball for the Tremec and am having that sent to RWR as well. Link to comment Share on other sites More sharing options...
JeffJ Posted November 27, 2013 Report Share Posted November 27, 2013 That was fast, the Tremec and drive shaft arrived at RWR today. The clutch should arrive tomorrow. I ordered the SA Shifter ball for the Tremec and am having that sent to RWR as well. Nice! I'm sure it will work out great. Say hi to Rob for me. Let him know that I picked up a new converter and drive shaft for my car, so it will be heading his way sometime this winter to get tuned. Link to comment Share on other sites More sharing options...
lbj Posted November 27, 2013 Report Share Posted November 27, 2013 Will do. The 4:10s are gonna help. Except for 4th gear, I should be running 1st thru 3rd like an MT82 with 3:55s. That may not be a bad thing. 4th gear is just going to bite moose. Nothing I can do about it. My application needs a stronger better transmission for the long haul. Link to comment Share on other sites More sharing options...
MMcGuirk Posted November 27, 2013 Author Report Share Posted November 27, 2013 Is that shift knob this one? http://www.shelbystore.com/Shelby-Six-Speed-White-Shift-knob-p/7s3z-7213-w6-75.htm The description says it only fits the Shelby shift lever. Is that the one? Did you get the a different shift lever other than what came with your Trmec? I talked with Bruce yesterday and he's the one who reordered whatever I need. It fits the Tremec shifter. Make sure the pitch is 12x1.75 Link to comment Share on other sites More sharing options...
lbj Posted November 27, 2013 Report Share Posted November 27, 2013 Those are the numbers in the description, 12X1.75. Are you still in break in mode? Link to comment Share on other sites More sharing options...
MMcGuirk Posted November 28, 2013 Author Report Share Posted November 28, 2013 Those are the numbers in the description, 12X1.75. Are you still in break in mode? Yes, but not for long....Laguna Seca with the Shelby Club tomorrow! Link to comment Share on other sites More sharing options...
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