M12 to T6060 Write up???
Thread Starter
Racer
Joined: Mar 2008
Posts: 445
Likes: 0
From: Mesa AZ
M12 to T6060 Write up???
I'm looking for a write up or more info on what is needed for the swap to go from the stock C5 M12 transmission to the(zR1?)T6060 tranny/diff set up.
Through my searching I believe what is needed:
C6 Rear cradle
C6 Rear lower control arms
Pfadt diff bracket
Aftermarket oil cooler(size? brand? where to mount??)
I believe I also read that you must modify the exhaust as well?
I'm looking to start sourcing the parts to do this swap so here in the next few months so I'm trying to get an idea of what I'm getting myself into, lol.
TIA!
Through my searching I believe what is needed:
C6 Rear cradle
C6 Rear lower control arms
Pfadt diff bracket
Aftermarket oil cooler(size? brand? where to mount??)
I believe I also read that you must modify the exhaust as well?
I'm looking to start sourcing the parts to do this swap so here in the next few months so I'm trying to get an idea of what I'm getting myself into, lol.
TIA!
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
I just got some advice from Bill Curlee about Rockland Standard that you send yours in, and they adapt, so you might not need all those C6 parts?
In my thread titled, "I NEED ADVICE", on post #10 there's links. C5Tech section.
In my thread titled, "I NEED ADVICE", on post #10 there's links. C5Tech section.
Last edited by zeevette; Aug 5, 2011 at 12:45 AM.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
There has been a few MN12s and MN6s converted to GM Motorsports gear ratios ( ZR1 ratio is based off on the Motorsports box )
Rockland Standard can do the conversion. ADD in a rebuild diff with 3.73 gear
RPM can as well
Rockland can do dog ears rears too. Wohoo no clutch shifting at speed.
the down side is any racing quality trans will be LOUD.
Rockland Standard can do the conversion. ADD in a rebuild diff with 3.73 gear
RPM can as well
Rockland can do dog ears rears too. Wohoo no clutch shifting at speed.
the down side is any racing quality trans will be LOUD.
Thread Starter
Racer
Joined: Mar 2008
Posts: 445
Likes: 0
From: Mesa AZ
There has been a few MN12s and MN6s converted to GM Motorsports gear ratios ( ZR1 ratio is based off on the Motorsports box )
Rockland Standard can do the conversion. ADD in a rebuild diff with 3.73 gear
RPM can as well
Rockland can do dog ears rears too. Wohoo no clutch shifting at speed.
the down side is any racing quality trans will be LOUD.
Rockland Standard can do the conversion. ADD in a rebuild diff with 3.73 gear
RPM can as well
Rockland can do dog ears rears too. Wohoo no clutch shifting at speed.
the down side is any racing quality trans will be LOUD.
I'm still running the stock motor set up so this will not see "real" power for another year or so when I can afford to start building a motor/blower set up. I figured I'd get the drive train out of the way so I dont have to mess with it later on, and gives me room to play with a HCI set up while I build the boost set up without worrying about breaking something.
Thanks for all the replies and help!
Safety Car
Joined: Jun 2009
Posts: 3,888
Likes: 2
From: Frederick, Maryland
Supporting Vendor
Joined: Apr 2011
Posts: 3,332
Likes: 194
From: Frederick Maryland
St. Jude Donor '08-'09-'10-'11-'12, '14-'15-'16-'17-'18
Thanks guys for the props!
I have 2 of my sponsors with this set up (TR6060 with C6 Z06 diff). Here is the list:
-C6 cradle with lower control arms and spring (if you run coil overs, you need just the cradle)
-Phadt offset trans mounts
-You can run with or without the coolers (trans/diff)
-Modify the exhaust (remove a section from the mid pipes and add that piece to the over axle)
I do have 1 kit (C6 cradle with lower control arms/TR6060 MZ6;MM6 ratios/C6 Z06 diff) available for sale that I have not listed yet.
The ratios for the TR6060:
TR6060 gear count
MH3 (ZR1)
MM6 (Z06/base)
MZ6 (Z51)
1st:
2.29
2.66
2.97
2nd gear:
1.61
1.78
2.07
3rd gear:
1.21
1.30
1.43
4th gear:
1 to 1
5th gear:
.82
.74
.70
6th gear:
.68
.50
.57
I have 2 of my sponsors with this set up (TR6060 with C6 Z06 diff). Here is the list:
-C6 cradle with lower control arms and spring (if you run coil overs, you need just the cradle)
-Phadt offset trans mounts
-You can run with or without the coolers (trans/diff)
-Modify the exhaust (remove a section from the mid pipes and add that piece to the over axle)
I do have 1 kit (C6 cradle with lower control arms/TR6060 MZ6;MM6 ratios/C6 Z06 diff) available for sale that I have not listed yet.
The ratios for the TR6060:
TR6060 gear count
MH3 (ZR1)
MM6 (Z06/base)
MZ6 (Z51)
1st:
2.29
2.66
2.97
2nd gear:
1.61
1.78
2.07
3rd gear:
1.21
1.30
1.43
4th gear:
1 to 1
5th gear:
.82
.74
.70
6th gear:
.68
.50
.57
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Supporting Vendor
Joined: Apr 2011
Posts: 3,332
Likes: 194
From: Frederick Maryland
St. Jude Donor '08-'09-'10-'11-'12, '14-'15-'16-'17-'18
I'm not looking for the ratios out of the T6060 or looking to try and build my stock diff as I want to start fresh with the stronger platform of the entire T6060 transmission and diff, and for being close to the same price it makes more sense to me to go this route.
I'm still running the stock motor set up so this will not see "real" power for another year or so when I can afford to start building a motor/blower set up. I figured I'd get the drive train out of the way so I dont have to mess with it later on, and gives me room to play with a HCI set up while I build the boost set up without worrying about breaking something.
Thanks for all the replies and help!
I'm still running the stock motor set up so this will not see "real" power for another year or so when I can afford to start building a motor/blower set up. I figured I'd get the drive train out of the way so I dont have to mess with it later on, and gives me room to play with a HCI set up while I build the boost set up without worrying about breaking something.
Thanks for all the replies and help!
Race Director
Joined: May 2005
Posts: 15,960
Likes: 21
From: West Norriton PA
St. Jude Donor '08
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
BTW, I would probably do the diff at the same time.
Supporting Vendor
Joined: Apr 2011
Posts: 3,332
Likes: 194
From: Frederick Maryland
St. Jude Donor '08-'09-'10-'11-'12, '14-'15-'16-'17-'18
I just blew up my m12, and lost most of the fluid, so I assume the case may be involved. What would you recommend, Rick. I can't rebuild the trans, but I can R&R it. I'd just as soon have a super duty (600RWHP) built trans, without the C6 parts. PM me if you think best. I'll be ordering parts soon, Dave.
BTW, I would probably do the diff at the same time.
BTW, I would probably do the diff at the same time.
pm sent.
Ricks here!! 
Race Director
Joined: Apr 2007
Posts: 18,048
Likes: 53
From: long Island NY
If you don't really race the car often but just want lets say ZR1 gearing using the stock 04Z tranny is fine, or is it just better off doing a 6060 conversion??
What would the approx price differences be?
What would the approx price differences be?
Supporting Vendor
Joined: Apr 2011
Posts: 3,332
Likes: 194
From: Frederick Maryland
St. Jude Donor '08-'09-'10-'11-'12, '14-'15-'16-'17-'18
IF you can find a used ZR1 trans, it will be pricy. A new ZR1 trans is over $4,000.
If you can find a Z06 TR6060/C6 Z06 diff/cradle with control arms, it's around $5,000. You can buy the same set up with all the upgrades for just less than $7,000.
Race Director
Joined: Apr 2007
Posts: 18,048
Likes: 53
From: long Island NY
I have a blower motor with equal power to the ZR1 so I just figured. Thats why I ask the experts. I just feel like when I launch if its blowing the tires off you just need to shift to often as opposed to the C6Z OR ZR1.
Supporting Vendor
Joined: Apr 2011
Posts: 3,332
Likes: 194
From: Frederick Maryland
St. Jude Donor '08-'09-'10-'11-'12, '14-'15-'16-'17-'18
Bret (BLOWNBLUEZ06) went to the MM6 TR6060 first but couldn't get traction below 80-85 MPH so he decided on the stronger and lower gears of the MH3.
The internal parts are made of better metal than the other TR6060's (MM6/MZ6).
Melting Slicks
Joined: Sep 2003
Posts: 2,062
Likes: 117
Gear box ratio and appropriate differential will certainly be my next mods...
Starting on a TR6060 base with ZR1 ratio and 3:73 rear end...
Right in my engine power band, avoiding wheel spin first and second, and having a nice steps on the last four gears:
Christian
Starting on a TR6060 base with ZR1 ratio and 3:73 rear end...
Right in my engine power band, avoiding wheel spin first and second, and having a nice steps on the last four gears:
Christian
Heel & Toe
Joined: Aug 2001
Posts: 19
Likes: 0
From: San Antonio Texas
I was just looking into this. My 03 Z06 puts out 440hp/405tq to the wheels and these M12s cannot hold up. Im grinding gears now and wish there was a solution to this aside from getting it rebuilt over and over.
Tech Contributor
Joined: Jan 2007
Posts: 19,341
Likes: 1,120
From: Dyer, IN