10.5 FF 14 Bolt Limited Slip - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**THI** · 02-01-2023, 02:50 PM

I am currently starting a rebuild of a 1978 GMC K25 that spent the majority of it's life in the desert SW. It was run hard and put away wet so to speak! The engine, trans and t-case were all replaced at some point, and the replacements were all cracked so most of the driveline went to scrap. I am parting out a 2003 Silverado 2500HD and am considering putting the 8100 Vortec (496) in this truck as I have a Dana 60 front to replace the Dana 44 front that came on it. The 10.5" 14-bolt rear should be more than adequate for what I will be doing but I would like to put some type of Limited Slip in the 14-bolt to replace the GovLoc (worn out I might add) that is in it.

I am wondering what experience some have had with aftermarket LSD carriers. I do not need a Detroit Locker for what I will be doing but will need added traction that an open diff cannot deliver. Plus the 496 has way too much torque, if there really is such a thing! Thanks in advance.

Tom

**kwmech** · 02-02-2023, 03:05 PM

Tru-trac or more aggressive approach is a detroit locker

**mongocanfly** · 02-02-2023, 09:35 PM

Trutrac X2

cadillac_al · 02-03-2023, 08:01 AM

Trutracs are great. I wasn't aware that they made them for the 14 bolt. If money was no object I would go E Locker or Air locker.

**THI** · 02-03-2023, 08:05 AM

Thanks! I have not blown a factory GovLoc but have witnessed other do it, including my son (I told him not to drag race my truck)! I have heard good things about the TruTrac and sounds like a good route to go!

Bigdav160 · 02-03-2023, 08:39 AM

Personally I like the Govloc. It performs great in stock vehicles. I've only seen one broken one in a 10.5"/11.5" and it was thoroughly abused. It's hard to tell if it's worn out without taking it apart.

**truckster** · 02-03-2023, 05:53 PM

I blew a Gov-Loc right through the case just driving at freeway speed. But that was on a 12 bolt. I think the design on a 14 bolt is a lot stronger.

scottofksu · 02-07-2023, 03:32 PM

Trutrac is going in the 9.5" 14bolt I am putting in my '65 C10.

Short 3/4 · 02-08-2023, 02:06 AM

Have had TrueTracks front and rear for several years in a Toyota and recently added one to the front of my Chevy. Very happy with them. Can’t tell they are in there except when I don’t get stuck. Also no silly clutch packs to wear out. Same basic design as used on military Hummve’s, so that should say something.

02-01-2023, 02:50 PM	#1
THI Active Member Join Date: Jan 2017 Location: Traverse City, MI Posts: 172	10.5 FF 14 Bolt Limited Slip I am currently starting a rebuild of a 1978 GMC K25 that spent the majority of it's life in the desert SW. It was run hard and put away wet so to speak! The engine, trans and t-case were all replaced at some point, and the replacements were all cracked so most of the driveline went to scrap. I am parting out a 2003 Silverado 2500HD and am considering putting the 8100 Vortec (496) in this truck as I have a Dana 60 front to replace the Dana 44 front that came on it. The 10.5" 14-bolt rear should be more than adequate for what I will be doing but I would like to put some type of Limited Slip in the 14-bolt to replace the GovLoc (worn out I might add) that is in it. I am wondering what experience some have had with aftermarket LSD carriers. I do not need a Detroit Locker for what I will be doing but will need added traction that an open diff cannot deliver. Plus the 496 has way too much torque, if there really is such a thing! Thanks in advance. Tom

02-02-2023, 03:05 PM	#2
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,398	Re: 10.5 FF 14 Bolt Limited Slip Tru-trac or more aggressive approach is a detroit locker

02-02-2023, 09:35 PM	#3
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,594	Re: 10.5 FF 14 Bolt Limited Slip Trutrac X2 __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver

02-03-2023, 08:01 AM	#4
cadillac_al Registered User Join Date: Oct 2013 Location: Maine Posts: 2,340	Re: 10.5 FF 14 Bolt Limited Slip Trutracs are great. I wasn't aware that they made them for the 14 bolt. If money was no object I would go E Locker or Air locker. __________________ 76 Chevy K20 76 GMC K15 77 Chevy C10 77 Chevy K10

02-03-2023, 08:05 AM	#5
THI Active Member Join Date: Jan 2017 Location: Traverse City, MI Posts: 172	Re: 10.5 FF 14 Bolt Limited Slip Thanks! I have not blown a factory GovLoc but have witnessed other do it, including my son (I told him not to drag race my truck)! I have heard good things about the TruTrac and sounds like a good route to go!

02-03-2023, 08:39 AM	#6
Bigdav160 Registered User Join Date: Apr 2011 Location: Klein Texas Posts: 3,852	Re: 10.5 FF 14 Bolt Limited Slip Personally I like the Govloc. It performs great in stock vehicles. I've only seen one broken one in a 10.5"/11.5" and it was thoroughly abused. It's hard to tell if it's worn out without taking it apart. __________________ 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

02-03-2023, 05:53 PM	#7
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,815	Re: 10.5 FF 14 Bolt Limited Slip I blew a Gov-Loc right through the case just driving at freeway speed. But that was on a 12 bolt. I think the design on a 14 bolt is a lot stronger. __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson

02-07-2023, 03:32 PM	#8
scottofksu Registered User Join Date: Nov 2011 Location: Omaha, Nebraska Posts: 431	Re: 10.5 FF 14 Bolt Limited Slip Trutrac is going in the 9.5" 14bolt I am putting in my '65 C10. __________________ Travis' Tribute Truck - 65 C10 Frame Up Restoration http://67-72chevytrucks.com/vboard/s...d.php?t=495073

02-08-2023, 02:06 AM	#9
Short 3/4 Registered User Join Date: Jan 2017 Location: Los Osos Ca Posts: 537	Re: 10.5 FF 14 Bolt Limited Slip Have had TrueTracks front and rear for several years in a Toyota and recently added one to the front of my Chevy. Very happy with them. Can’t tell they are in there except when I don’t get stuck. Also no silly clutch packs to wear out. Same basic design as used on military Hummve’s, so that should say something. __________________ 65 short stepside K10 292-SM420-T221 8 lug closed D44 front NoSpin HO72 4.10 rear



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.