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#1 |
Registered User
Join Date: Oct 2014
Location: Tell City, IN
Posts: 637
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I'm having my 14 bolt redone, and am having a "locker" put in. I'm going to buy itnseperate but I need help. The most confusing part to me is terminology. Locker no spin tru-track... It's all pretty confusing. What I want, is something that locks the rear wheels, whether doing a burnout, in the mud, or driving down the road. Thanks in advance if you guys can help!
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Big Nate Carp. Local 224. Buy made in the USA! 03 F350 6.0 Daily Race Truck. 79 C70 366 Project Dump. |
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#2 |
Senior Member
![]() Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,913
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Re: 14 bolt Full-Floater Locker Help?
A locker of any type uses mechanical gears to lock the differential under unequal loads, as opposed to a limited-slip (Positraction) that uses clutches to lock the differential. There are different types of lockers, and several manufacturers, but that's the basic difference. Some users don't like the chatter or noise they get with lockers on the street, but others don't seem to even notice. There are a number of threads on the board discussing the merits of different manufacturers' lockers.
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#3 |
Registered User
Join Date: Oct 2013
Location: Maine
Posts: 2,357
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Re: 14 bolt Full-Floater Locker Help?
All the off road magazines for years love the Detroit locker in the 14 bolts and they are one of the cheapest ones to boot. I wouldn't consider anything else.
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#4 |
Registered User
Join Date: Oct 2014
Location: Tell City, IN
Posts: 637
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Re: 14 bolt Full-Floater Locker Help?
Cadillac that already helps tremendously. Locker it is so we have a starting point. Now, one to hold up to a 454, 5k clutch dumps, and 40" Baja clawz... A Detroit work for that? I'm willing to spend for quality made in the USA parts...
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Big Nate Carp. Local 224. Buy made in the USA! 03 F350 6.0 Daily Race Truck. 79 C70 366 Project Dump. |
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#5 |
Registered User
Join Date: Oct 2014
Location: Tell City, IN
Posts: 637
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Re: 14 bolt Full-Floater Locker Help?
http://www.jegs.com/i/Detroit+Locker...FegRMwodOzkA9w
Like this? It says 4.56 and up, mine has 4.10's... Is this a "full carrier" and because of that can I just order new gears?
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Big Nate Carp. Local 224. Buy made in the USA! 03 F350 6.0 Daily Race Truck. 79 C70 366 Project Dump. |
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#6 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: 14 bolt Full-Floater Locker Help?
With 40" tires you need much lower gears than 4.10's.
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#7 |
Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: 14 bolt Full-Floater Locker Help?
The differential case in the link looks to be a generic pic. It is priced like replacement differential gear unit not a replacement case.
Here's the pic form Summit with the same part number ![]()
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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#8 |
Registered User
Join Date: Oct 2014
Location: Tell City, IN
Posts: 637
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Re: 14 bolt Full-Floater Locker Help?
CaptainFab - I really like to keep my truck at 4.10's right now, as that matches my front,and at 55 mph I will turning about 2k rpm. So its very street friendly in that area, plus I have a SM465 so that helps there too.
Thanks bigdav that looks like what I seen more of, just a round piece with pegs sticking out of it. Wonder who's picture is right?
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Big Nate Carp. Local 224. Buy made in the USA! 03 F350 6.0 Daily Race Truck. 79 C70 366 Project Dump. |
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#9 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: 14 bolt Full-Floater Locker Help?
With 4.10's and a 40" tire you will be about 1900 rpm's at 55 mph. That is a bit below the recommended rpm range. Plus with those tires and gears it'll be rather worthless offroad. You'll likely have to start out in 1st gear in the SM465 all the time. With 40" tires you need to have a 5.13 or 5.38 gear.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#10 |
Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: 14 bolt Full-Floater Locker Help?
The round pegs are for your pinion gears.
If you look at the Jegs page all the Detroit items use that same picture. A complete posi case for a 14 bolt will twice that price.
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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#11 |
Registered User
Join Date: Oct 2014
Location: Tell City, IN
Posts: 637
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Re: 14 bolt Full-Floater Locker Help?
Phew... Another reason to stay 4.10's lol. I will look around at summit before I pull the trigger and order one... Will keep this updated accordingly
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Big Nate Carp. Local 224. Buy made in the USA! 03 F350 6.0 Daily Race Truck. 79 C70 366 Project Dump. |
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#12 |
Registered User
![]() Join Date: Feb 2007
Location: Star Valley, WY
Posts: 2,038
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Re: 14 bolt Full-Floater Locker Help?
A guy could look into Yukon Gear's Grizzly Locker as well as the Detroit.
http://www.yukongear.com/ProductDeta...px?ProdID=8159 For years Detroit had the GM 14 bolt market segment cornered in both brut strength and price at $383.99. Detroit's price started climbing and then a few years ago some how Yukon managed to copy the Detroit locker and got it on the market, (patent expiration or something happened). Side by side they are identical in design and material build but Yukon initially undercut Detroit's price a fair bit, probably for market entry. This is when i purchased mine. Now i see the Grizzly price higher than Detroit's which has remained at about $425 for the 14 bolt for some years now where as Yukon has jacked their price up to around $490, (based on Summit racing and most prominent online 4x4 retailer prices). Regardless, I have the Yukon Gear Grizzly locker in mine with 4.10's. I dont have 40's but im not easy on the rear end with 600+ ft/lbs of torgue. steve
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Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's |
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#13 |
Registered User
Join Date: Oct 2014
Location: Tell City, IN
Posts: 637
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Re: 14 bolt Full-Floater Locker Help?
http://m.summitracing.com/parts/dtl-225s10
So this Eaton one is the same as Yukon? Ifso I believe I wi just snag this one with free shipping...
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Big Nate Carp. Local 224. Buy made in the USA! 03 F350 6.0 Daily Race Truck. 79 C70 366 Project Dump. |
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#14 |
Registered User
![]() Join Date: Feb 2007
Location: Star Valley, WY
Posts: 2,038
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Re: 14 bolt Full-Floater Locker Help?
I wish they would change that picture. That shows it's a drop in unit. The detroit locker for the 14bolt is a full carrier replacement unit. But that is the same price for about the past 6 or so years now since they increased from $383.99. Free shipping makes the deal. Just make sure you get one for the 4.10 and down carrier.
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Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's |
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#15 |
Registered User
Join Date: Oct 2014
Location: Tell City, IN
Posts: 637
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Re: 14 bolt Full-Floater Locker Help?
Just called summit... Sucks those guys n gals gotta work today on the eve of Christmas. But the rep said purchasing that will also require purchaskng a new open carrier. True?
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Big Nate Carp. Local 224. Buy made in the USA! 03 F350 6.0 Daily Race Truck. 79 C70 366 Project Dump. |
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#16 |
Registered User
![]() Join Date: Feb 2007
Location: Star Valley, WY
Posts: 2,038
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Re: 14 bolt Full-Floater Locker Help?
yes, only if you currently have a Gov-Loc limited slip unit as those use their own carrier. If you currently have an open rear diff or the eaton limited slip then you can use your carrier.
MY mistake, the detroit for the 14 bolt does drop into the carrier, it is NOT a complete replacement carrier unit. Jeez, old age already?! Sorry about that misinfo. That is why the summit rep told you you may need to replace your carrier.
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Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's |
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#17 |
Registered User
Join Date: Oct 2014
Location: Tell City, IN
Posts: 637
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Re: 14 bolt Full-Floater Locker Help?
That helps as well. Only problem is my axle is in the high school shop and unavailable til the 2nd...
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Big Nate Carp. Local 224. Buy made in the USA! 03 F350 6.0 Daily Race Truck. 79 C70 366 Project Dump. |
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#18 |
Senior Member
Join Date: May 2004
Location: Binghamton, NY
Posts: 3,456
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Re: 14 bolt Full-Floater Locker Help?
I wouldn't say worthless just not great. I had a truck with a stock TBI 454, auto, 373s and 40" boggers and even with the not so great lowrange of the 205, still wasn't terrible offroad. On road at highway speeds will be a little doggy, I'd say 4.56s be a good compromise....
Also the Detroit pic above replaces the side gears inside the carrier, so doesn't matter what carrier you have. Its the strongest, cheapest, and easiest locker out. Why everyone uses it, Ford, Dodge, Jeep whatever....
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2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 6” lift 1999 GMC Yukon 350/4L60 4" SAS |
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#19 |
Registered User
Join Date: Oct 2014
Location: Tell City, IN
Posts: 637
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Re: 14 bolt Full-Floater Locker Help?
http://m.summitracing.com/cart/estim...ping#Estimator
That is my shopping cart for the rear end. A new gears 4.88 which will be perfect for towing 70 mph is at 3009 rpm or so which is good. I think. Maybe 4.56 not sure yet. B454 can you share some insight. Or someone? I'm ready to order some parts but don't wana order twice. Either way I'm going to regear look at it that way.
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Big Nate Carp. Local 224. Buy made in the USA! 03 F350 6.0 Daily Race Truck. 79 C70 366 Project Dump. |
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#20 |
Senior Member
Join Date: May 2004
Location: Binghamton, NY
Posts: 3,456
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Re: 14 bolt Full-Floater Locker Help?
I'll help if I can, what more you looking for?
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2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 6” lift 1999 GMC Yukon 350/4L60 4" SAS |
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#21 |
Registered User
Join Date: Oct 2014
Location: Tell City, IN
Posts: 637
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Re: 14 bolt Full-Floater Locker Help?
http://m.summitracing.com/parts/dtl-225s10
That is my locker I've chosen. http://m.summitracing.com/parts/mgr-gm10-5-488x Those my gears. http://m.summitracing.com/parts/mgr-625-8340 And my carrier. THESE 3 PARTS WILL WORJ TOGETHER CORRECT? Does everyone agree? I see no reason why they won't but axles are new to me and this is too costly of a mistake to make...
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Big Nate Carp. Local 224. Buy made in the USA! 03 F350 6.0 Daily Race Truck. 79 C70 366 Project Dump. |
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#22 |
Senior Member
Join Date: May 2004
Location: Binghamton, NY
Posts: 3,456
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Re: 14 bolt Full-Floater Locker Help?
might not need a carrier, pull the cover and see what you have in there now. No sense buying one if you already have one....but those parts will work....
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2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 6” lift 1999 GMC Yukon 350/4L60 4" SAS |
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#23 |
Registered User
Join Date: Oct 2013
Location: Maine
Posts: 2,357
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Re: 14 bolt Full-Floater Locker Help?
He has 4.10's now so he needs another carrier to change ratio. I'm not an axle expert either but it looks to me like you have the right parts. I'm sure some experience will weigh in soon. You are going to have to change gears in the front axle too right? That may need another carrier too, not sure.
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76 Chevy K20 76 GMC K15 77 Chevy C10 77 Chevy K10 |
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#24 |
Registered User
![]() Join Date: Feb 2007
Location: Star Valley, WY
Posts: 2,038
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Re: 14 bolt Full-Floater Locker Help?
So you did decide to regear to a deeper set of gears? If so then that is the correct carrier, otherwise it is not. Dont forget to change the front also. A gear swap is a rather involved procedure that basically encompasses a differential rebuild, especially the front with bearings and seals. It's a case of "since it's apart might as well replace all wearable parts". There's nothing to the 14bolt rear but the front is more involved.
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Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's |
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#25 |
Registered User
Join Date: Oct 2014
Location: Tell City, IN
Posts: 637
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Re: 14 bolt Full-Floater Locker Help?
So you did decide to regear to a deeper set of gears?
Yes, with 4.88's and 40" tires my rpm at 70 mph will be right at 3000 which is good for towing. Right now with 40" tires and 4.10's it is at 2500 or so, or do you all think that is alright for towing? (It is a 17' car hauler mostly towing truck parts and occasionally a car. In regards to the front, I will have to completely rebuild the Dana 44 and when that time comes... Well you guys will all know LOL! IF I do regear to 4.88's than if I get "thick" gears can't I use the current carrier in my truck now,and just get a locker that is designed for the 4.10 and down carrier? This is a giant learning curve so Yea bear with me... The 2nd I'm going to go to the shop and take picturrs of the axle. I can say before I dropped it off, the passenger side brakes were Locked up and the driver side would spin either way... The part that really confuses me is the carrier. Some say I need a new one, some don't...
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Big Nate Carp. Local 224. Buy made in the USA! 03 F350 6.0 Daily Race Truck. 79 C70 366 Project Dump. |
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