Best gear for 8.5 10 bolt

FLEMING · 11-01-2013, 09:23 AM

I have a 8.5 10 bolt in my nova.. No one makes a "pro" gear for a 10 bolt so I have always ran the street gears.. I have been debating selling the current rear and buying a 12 bolt but that is a huge expense even after selling the 10 bolt..

Who makes the best gear for a 10 bolt? Is it worth getting the gear treated or polished? ( I think Jim bailey used to do this as a business)...

Just really hate to swap out the current rear end..

ron mattson · 11-01-2013, 09:35 AM

Dewco, their process really works a little spendy
But they last

Dan Fahey · 11-01-2013, 10:58 AM

Quote:

Originally Posted by FLEMING

I have a 8.5 10 bolt in my nova.. No one makes a "pro" gear for a 10 bolt so I have always ran the street gears.. I have been debating selling the current rear and buying a 12 bolt but that is a huge expense even after selling the 10 bolt..

Who makes the best gear for a 10 bolt? Is it worth getting the gear treated or polished? ( I think Jim bailey used to do this as a business)...

Just really hate to swap out the current rear end..

I have Moser Axles and Gears in my 1995 Impala SS..

D

BIGNP438 · 11-01-2013, 11:05 AM

I have moser axle and spool package in mine with motive gears. Motives are good for about 5 years in my car and it weighs around 3500 lbs with me in it.

Dave Ribeiro · 11-01-2013, 11:07 AM

Fleming ,

There are some people making PRO- gears for 8.5/10 bolts ... What gear do you need ???

FLEMING · 11-01-2013, 11:16 AM

I have moser axles and spool in the car currently..

I am thinking 5.14 or 5.38 gear.. I just bracket race right now with 4.88.. if i fix a class motor it is a low hp 74 350 so I think a 5.14 with a 200 or turbo transmission with 2.75 low gear.. I may send it to innovators west and have gear lightened and treated if you guys think its worth the extra money..

I didnt know anyone made a pro gear so thats good news.

Greg Reimer 7376 · 11-01-2013, 11:38 AM

There's no reason in the world that that 8.5 10 bolt wouldn't hold up in that car with a stocker 350 and an automatic.I seem to remember guys running them with a posi unit, that was the weak point. If you had a good set up, a good spool, quality axles, maybe steel web caps,etc. you probably won't ever break it. I don't think I'd use one in a '70 Chevelle A/S car, but the small block I,J or K car would have no issues. That rear end is probably 80-90% the strength of a 12 bolt anyway. Some of the bearings in it are the same as the 12 bolt uses.I do remember a shop that used to get junkyard big-car 12 bolt housings, cut the axle tubes off, and attach the axle tubes from 10 bolt Camaro-Nova rear ends to it. He had the jig to line things up, he was an excellent welder, and he had a good product, but he's been gone out of business for some time.I think big car 12 bolts have gotten scarce around here as well.Good luck with your project!

Jim Kaekel · 11-01-2013, 11:48 AM

I've got a friend that has a pretty fast bracket car that has had really good luck with his 8.5" 10-bolt. The car, a '84 Hurst/Olds with a 455 Olds/Glide with a t-brake, runs 8.50's. The car is pretty light, under 2500 lbs., and he actually runs a street type gear.

Dan Fahey · 11-01-2013, 01:08 PM

Moser has an entire BOLT in REAR for under $2000.00

Just about as much as installing everything yourself...

Dan

FLEMING · 11-01-2013, 01:44 PM

Yeh I think I am good as well now that I think about it.. Right now the car runs 6.90's 1.45 60'.. I make a class car out of it I prob wont run 7.30's in the 1/8 but I would think the 60' would still be down in that range with the 2.75 low gear..

I will probably send the axles to moser to get them star flanged and gun drilled this winter.. and switch the pinion yoke over to a 1350 u joint.. ( I dont trust the 8.5 strap setup)

Thanks fellas!

11-01-2013, 09:23 AM	#1
FLEMING Member Join Date: Aug 2003 Posts: 262 Likes: 48 Liked 54 Times in 25 Posts	Best gear for 8.5 10 bolt I have a 8.5 10 bolt in my nova.. No one makes a "pro" gear for a 10 bolt so I have always ran the street gears.. I have been debating selling the current rear and buying a 12 bolt but that is a huge expense even after selling the 10 bolt.. Who makes the best gear for a 10 bolt? Is it worth getting the gear treated or polished? ( I think Jim bailey used to do this as a business)... Just really hate to swap out the current rear end..

11-01-2013, 09:35 AM	#2
ron mattson Member Join Date: Nov 2005 Location: cloquet mn Posts: 466 Likes: 17 Liked 67 Times in 30 Posts	Re: Best gear for 8.5 10 bolt Dewco, their process really works a little spendy But they last __________________ Ron Mattson 5015 STK

11-01-2013, 11:05 AM	#4
BIGNP438 Junior Member Join Date: Apr 2004 Location: MONROE,LA. Posts: 5 Likes: 0 Liked 0 Times in 0 Posts	Re: Best gear for 8.5 10 bolt I have moser axle and spool package in mine with motive gears. Motives are good for about 5 years in my car and it weighs around 3500 lbs with me in it.

11-01-2013, 11:07 AM	#5
Dave Ribeiro VIP Member Join Date: Sep 2002 Location: Williamsburg, Va.---USA Posts: 1,827 Likes: 1,612 Liked 56 Times in 27 Posts	Re: Best gear for 8.5 10 bolt Fleming , There are some people making PRO- gears for 8.5/10 bolts ... What gear do you need ??? __________________ Dave Ribeiro 1033 STK

11-01-2013, 11:16 AM	#6
FLEMING Member Join Date: Aug 2003 Posts: 262 Likes: 48 Liked 54 Times in 25 Posts	Re: Best gear for 8.5 10 bolt I have moser axles and spool in the car currently.. I am thinking 5.14 or 5.38 gear.. I just bracket race right now with 4.88.. if i fix a class motor it is a low hp 74 350 so I think a 5.14 with a 200 or turbo transmission with 2.75 low gear.. I may send it to innovators west and have gear lightened and treated if you guys think its worth the extra money.. I didnt know anyone made a pro gear so thats good news.

11-01-2013, 11:38 AM	#7
Greg Reimer 7376 VIP Member Join Date: Nov 2008 Location: Glendora,Calif. Posts: 1,136 Likes: 172 Liked 705 Times in 219 Posts	Re: Best gear for 8.5 10 bolt There's no reason in the world that that 8.5 10 bolt wouldn't hold up in that car with a stocker 350 and an automatic.I seem to remember guys running them with a posi unit, that was the weak point. If you had a good set up, a good spool, quality axles, maybe steel web caps,etc. you probably won't ever break it. I don't think I'd use one in a '70 Chevelle A/S car, but the small block I,J or K car would have no issues. That rear end is probably 80-90% the strength of a 12 bolt anyway. Some of the bearings in it are the same as the 12 bolt uses.I do remember a shop that used to get junkyard big-car 12 bolt housings, cut the axle tubes off, and attach the axle tubes from 10 bolt Camaro-Nova rear ends to it. He had the jig to line things up, he was an excellent welder, and he had a good product, but he's been gone out of business for some time.I think big car 12 bolts have gotten scarce around here as well.Good luck with your project!

11-01-2013, 11:48 AM	#8
Jim Kaekel VIP Member Join Date: Jul 2002 Location: Michigan Posts: 1,227 Likes: 133 Liked 531 Times in 108 Posts	Re: Best gear for 8.5 10 bolt I've got a friend that has a pretty fast bracket car that has had really good luck with his 8.5" 10-bolt. The car, a '84 Hurst/Olds with a 455 Olds/Glide with a t-brake, runs 8.50's. The car is pretty light, under 2500 lbs., and he actually runs a street type gear. __________________ Jim Kaekel 3836 STK

11-01-2013, 01:08 PM	#9
Dan Fahey VIP Member Join Date: Oct 2008 Posts: 2,128 Likes: 1,084 Liked 184 Times in 113 Posts	Re: Best gear for 8.5 10 bolt Moser has an entire BOLT in REAR for under $2000.00 Just about as much as installing everything yourself... Dan Last edited by Dan Fahey; 11-01-2013 at 01:13 PM.

11-01-2013, 01:44 PM	#10
FLEMING Member Join Date: Aug 2003 Posts: 262 Likes: 48 Liked 54 Times in 25 Posts	Re: Best gear for 8.5 10 bolt Yeh I think I am good as well now that I think about it.. Right now the car runs 6.90's 1.45 60'.. I make a class car out of it I prob wont run 7.30's in the 1/8 but I would think the 60' would still be down in that range with the 2.75 low gear.. I will probably send the axles to moser to get them star flanged and gun drilled this winter.. and switch the pinion yoke over to a 1350 u joint.. ( I dont trust the 8.5 strap setup) Thanks fellas!