12 bolt conversion
Thread Starter
Burning Brakes
Joined: Nov 2011
Posts: 1,170
Likes: 201
From: Willoughby Ohio
The last picture is hd cover from Bairs and is heavier everywhere. I am going to make stainless steel fill plug and bring the cover to Carlisle with me. Bill I have some feedback on the yoke clamps from the late model stock car. They have held up to 8400 rpm shift points so I think we are in a good spot. I also expect Mike to start posting some pictures soon.
Hope to see all that are going to Carlisle,
Dave
Hope to see all that are going to Carlisle,
Dave
Le Mans Master
Joined: Mar 2001
Posts: 6,240
Likes: 1,013
From: Watkinsville, GA and Glen Cove, NY
Great David, love to hear those results. Doesn't surprise me at all having had my hands on those caps. Mike is bringing my stuff to Carlisle so I will definitely be there. Look forward to meeting you!
Bill
Bill
Thread Starter
Burning Brakes
Joined: Nov 2011
Posts: 1,170
Likes: 201
From: Willoughby Ohio
Bill,
Here are a few pictures of your caps after plating. The plating is black zinc and will pass a 360 hour salt spray test.
Here are a few pictures of your caps after plating. The plating is black zinc and will pass a 360 hour salt spray test.
Last edited by 76strokervette; Aug 10, 2017 at 08:29 AM.
Thread Starter
Burning Brakes
Joined: Nov 2011
Posts: 1,170
Likes: 201
From: Willoughby Ohio
The service I have received from them has been superb.
Dave (see you in 2 weeks)
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Race Director
Joined: Jul 2015
Posts: 13,082
Likes: 3,399
From: SW Florida.
just found this thread. so this is putting 12 bolt internals in a 8.2 10 bolt (sorta) vette diff housing? would modifying for 8.5 inch 10-bolt internals be easier? cuz that is supposed to be a pretty tough rear also.
Thread Starter
Burning Brakes
Joined: Nov 2011
Posts: 1,170
Likes: 201
From: Willoughby Ohio
Yes it is about putting modified 12 bolt ring and pinion in the corvette housing. The 12 bolt carrier is supposed to be 4 times stronger than the ten bolt. Add the 30 splines inner axles and 31 spline outer axles and you have a significant upgrade from the factory 17 spline units. Tom's kits also include upgraded half shafts too.
Intermediate
Joined: Jun 2013
Posts: 39
Likes: 5
From: Southern Oregon
c2 rear differential upgrade
Hello-I have a '64 with c5 front and c2 rear disc brake conversion. car has 509 Dart with 675hp. Would like either 10 bolt upgrade with with 12 bolt guts or complete 12 bolt. Tom's Differentials only offers 3:71 and lower gear ratios. Looking to keep my 3:36 rear ratio as I have Tremec t600 5 spd tranny as well.
Rear end in car is fine but don't think it can handle the recently installed Dart 509 for long. Although it did handle a built LS-6 for several years.
does anyone make an upgrade kit or conversion kit for c2's?
Rear end in car is fine but don't think it can handle the recently installed Dart 509 for long. Although it did handle a built LS-6 for several years.
does anyone make an upgrade kit or conversion kit for c2's?
Thread Starter
Burning Brakes
Joined: Nov 2011
Posts: 1,170
Likes: 201
From: Willoughby Ohio
Same set up from 63 thru 79. To run the gearing you want check out a modified ten bolt with 12 bolt cross shaft and spider gears.
It will also use the 30 spline inners and 31 spline outers.
Machining is required. If you want parts from Tom's I would get them soon because his rumored retirement is coming quickly.
There are several threads on here with the ten bolt builds for you to look at if you want specific details.
Good luck,
Dave
It will also use the 30 spline inners and 31 spline outers.
Machining is required. If you want parts from Tom's I would get them soon because his rumored retirement is coming quickly.
There are several threads on here with the ten bolt builds for you to look at if you want specific details.
Good luck,
Dave
Le Mans Master
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
Hello-I have a '64 with c5 front and c2 rear disc brake conversion. car has 509 Dart with 675hp. Would like either 10 bolt upgrade with with 12 bolt guts or complete 12 bolt. Tom's Differentials only offers 3:71 and lower gear ratios. Looking to keep my 3:36 rear ratio as I have Tremec t600 5 spd tranny as well.
Rear end in car is fine but don't think it can handle the recently installed Dart 509 for long. Although it did handle a built LS-6 for several years.
does anyone make an upgrade kit or conversion kit for c2's?
Rear end in car is fine but don't think it can handle the recently installed Dart 509 for long. Although it did handle a built LS-6 for several years.
does anyone make an upgrade kit or conversion kit for c2's?
Same set up from 63 thru 79. To run the gearing you want check out a modified ten bolt with 12 bolt cross shaft and spider gears.
It will also use the 30 spline inners and 31 spline outers.
Machining is required. If you want parts from Tom's I would get them soon because his rumored retirement is coming quickly.
There are several threads on here with the ten bolt builds for you to look at if you want specific details.
Good luck,
Dave
It will also use the 30 spline inners and 31 spline outers.
Machining is required. If you want parts from Tom's I would get them soon because his rumored retirement is coming quickly.
There are several threads on here with the ten bolt builds for you to look at if you want specific details.
Good luck,
Dave
Yep... That's what I had to do to keep 3.36 gears. 10 bolt posi case, with 12 bolt guts..... and the 30/31 axles etc.... All Tom's stuff.
Not a lot of options if you wanna stay with taller then 3.70 gears.
Not sure a built 10 bolt will hold up to 675hp with a stick trans if you are going to actually race it.
Race Director
Joined: May 2003
Posts: 10,956
Likes: 409
From: California
Yep... That's what I had to do to keep 3.36 gears. 10 bolt posi case, with 12 bolt guts..... and the 30/31 axles etc.... All Tom's stuff.
Not a lot of options if you wanna stay with taller then 3.70 gears.
Not sure a built 10 bolt will hold up to 675hp with a stick trans if you are going to actually race it.
Not a lot of options if you wanna stay with taller then 3.70 gears.
Not sure a built 10 bolt will hold up to 675hp with a stick trans if you are going to actually race it.
650hp.... TKO 600.... Mikes best super 10 to date...
Last edited by pauldana; Nov 7, 2017 at 08:24 PM.
Racer
Joined: Dec 2014
Posts: 328
Likes: 30
Le Mans Master
Joined: Mar 2001
Posts: 6,240
Likes: 1,013
From: Watkinsville, GA and Glen Cove, NY
Hello-I have a '64 with c5 front and c2 rear disc brake conversion. car has 509 Dart with 675hp. Would like either 10 bolt upgrade with with 12 bolt guts or complete 12 bolt. Tom's Differentials only offers 3:71 and lower gear ratios. Looking to keep my 3:36 rear ratio as I have Tremec t600 5 spd tranny as well.
Rear end in car is fine but don't think it can handle the recently installed Dart 509 for long. Although it did handle a built LS-6 for several years.
does anyone make an upgrade kit or conversion kit for c2's?
Rear end in car is fine but don't think it can handle the recently installed Dart 509 for long. Although it did handle a built LS-6 for several years.
does anyone make an upgrade kit or conversion kit for c2's?
Last edited by 69ttop502; Nov 8, 2017 at 08:01 AM.