12 Bolt vs 10 Bolt Rear

Dan Fahey · 04-19-2018, 11:15 PM

Will a 10 Bolt live as well as a 12 Bolt in Stock?
What brand of gear works and survives better?

D

Mark Yacavone · 04-20-2018, 12:17 AM

Quote:

Originally Posted by Dan Fahey

Will a 10 Bolt live as well as a 12 Bolt in Stock?
What brand of gear works and survives better?

D

Not enough information

ss3011 · 04-20-2018, 07:12 AM

A "built" 8.5" 10 bolt will handle quite a lot , and I think Truman Fields Firebird stick car even ran an early 8.2" 10 bolt . Most of the breakage would occur on the side gears and pinions in the differential . Since most racers run a spool and aftermarket axles , both of these axles will live OK . A 12 bolt will out live them both , and has better ratio coverage .

Jim Kaekel · 04-20-2018, 08:16 AM

A close friend of mine has a 10-bolt GM in an 8.50 E.T., BB Olds-powered bracket car and has had real good luck with it, although his car is very light, however, gear selection is VERY limited. After many years running it, he is currently switching over to a 9" Ford. With no pro gears and limited ratios available for the 10-bolt, that gives the advantage to the 12-bolt. Just my .02.

Dan Fahey · 04-20-2018, 01:07 PM

Currently using 4.56's, Moser Street Axles, Mini Spool, 28 inch MT

Have a Spool and C-Clip Eliminator kit not yet installed.

Considering 5.13's. with new Stocker cam

MR DERBY CITY · 04-20-2018, 05:33 PM

Dan, think of it this way....You will buy a 12 bolt sooner or later.....If you buy one sooner you can sell all your 10 bolt parts BEFORE they are destroyed.....Regards....

04-19-2018, 11:15 PM	#1
Dan Fahey VIP Member Join Date: Oct 2008 Posts: 2,127 Likes: 1,084 Liked 184 Times in 113 Posts	12 Bolt vs 10 Bolt Rear Will a 10 Bolt live as well as a 12 Bolt in Stock? What brand of gear works and survives better? D

04-20-2018, 07:12 AM	#3
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 908 Likes: 70 Liked 238 Times in 113 Posts	Re: 12 Bolt vs 10 Bolt Rear A "built" 8.5" 10 bolt will handle quite a lot , and I think Truman Fields Firebird stick car even ran an early 8.2" 10 bolt . Most of the breakage would occur on the side gears and pinions in the differential . Since most racers run a spool and aftermarket axles , both of these axles will live OK . A 12 bolt will out live them both , and has better ratio coverage .

04-20-2018, 08:16 AM	#4
Jim Kaekel VIP Member Join Date: Jul 2002 Location: Michigan Posts: 1,226 Likes: 133 Liked 529 Times in 107 Posts	Re: 12 Bolt vs 10 Bolt Rear A close friend of mine has a 10-bolt GM in an 8.50 E.T., BB Olds-powered bracket car and has had real good luck with it, although his car is very light, however, gear selection is VERY limited. After many years running it, he is currently switching over to a 9" Ford. With no pro gears and limited ratios available for the 10-bolt, that gives the advantage to the 12-bolt. Just my .02. __________________ Jim Kaekel 3836 STK

04-20-2018, 01:07 PM	#5
Dan Fahey VIP Member Join Date: Oct 2008 Posts: 2,127 Likes: 1,084 Liked 184 Times in 113 Posts	Re: 12 Bolt vs 10 Bolt Rear Currently using 4.56's, Moser Street Axles, Mini Spool, 28 inch MT Have a Spool and C-Clip Eliminator kit not yet installed. Considering 5.13's. with new Stocker cam

04-20-2018, 05:33 PM	#6
MR DERBY CITY VIP Member Join Date: Feb 2014 Location: Derby City, USA Posts: 3,608 Likes: 1,068 Liked 7,783 Times in 1,495 Posts	Re: 12 Bolt vs 10 Bolt Rear Dan, think of it this way....You will buy a 12 bolt sooner or later.....If you buy one sooner you can sell all your 10 bolt parts BEFORE they are destroyed.....Regards....