Manual locking hubs vs. auto locking.... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Ironhead · 05-02-2007, 07:49 PM

Any unforseen problem with removing worn and broke manual locking hubs on a 85 Blazer and replacing with auto locking hubs from a 84 1/2 ton truck? Both are 10 bolt, 6 lug. thanks...

1969k10stepside · 05-02-2007, 07:57 PM

If it was me,I would not use the auto hubs and atleast get a set of WARN lockouts.They arent expensive and beat the auto hubs that will fail in time

Ironhead · 05-02-2007, 08:26 PM

Thanks 1969K - I have had no problems with the autos on the truck since I bought the truck in 1990. I did however, had them apart when I replacd the wheel bearings and u-joints. I have a new set of Warn hubs sitting on a shelf that I forgot about til you mentioned it. The instruction sheets has two part numbers Premium/20990 and Standard/9790 but don't tell what the difference is. They have the plastic locks so, I'm assuming Standard. Might as well use them and make it easier on myself. Thanks for the advice.

1969k10stepside · 05-02-2007, 08:30 PM

They should be the standard ones,like the ones below.I bought them for my 71 and have no problems with them.I would have liked to get heavier duty ones though but these sorta match the rims...lol
Here are mine:
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Ironhead · 05-02-2007, 08:35 PM

Yes, they look exactly the same as yours. Thanks again for the replies.

jimmydean · 05-03-2007, 12:32 PM

I prefer manual hubs. Also, Warn is a local company and their hubs are near bombproof.

Hoods69BadBowTie · 05-03-2007, 03:56 PM

I agree, I like the manual hubs alot better. Had too many bad experiences with the auto hubs.

**special-K** · 05-04-2007, 09:38 AM

Autos are fine for what most use their 4wds for...no 4wheeling/stock tires or slightly over.I had Warn Loc-O-Matics with 14.50/37s and the grenaded if I wheeled in Auto.Autos great to get out of a slick spot where you don`t really want to hop out,lock,move ten feet,hop out,disengage,and get back in.I wish Warn still made the Loc-O-Matics.I guess people(like me at first)just didn`t follow instructions.They say for off road use and compression braking lock-in.They should have mentioned why.Once I followed the "lock`em in to go 4wheeling/use auto for a quick slippery spot" method they where great.

LONGHAIR · 05-04-2007, 05:14 PM

Also, be aware that the factory auot-locking hubs require a special wheel bearing washer. The lock washer has 4 tabs that enguage part of the auto-hub's internal works. The standard washers (like from older trucks) do not have these tabs.

05-02-2007, 07:49 PM	#1
Ironhead Registered User Join Date: Feb 2007 Location: Westfield, Tioga County) Pennsylvania Posts: 113	Manual locking hubs vs. auto locking.... Any unforseen problem with removing worn and broke manual locking hubs on a 85 Blazer and replacing with auto locking hubs from a 84 1/2 ton truck? Both are 10 bolt, 6 lug. thanks... __________________ Ironhead Mike '68 Panel 402BB '84 Shortbox 4X4 '85 Blazer '97 Silverado Ext. Cab

05-02-2007, 07:57 PM	#2
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,019	Re: Manual locking hubs vs. auto locking.... If it was me,I would not use the auto hubs and atleast get a set of WARN lockouts.They arent expensive and beat the auto hubs that will fail in time

05-02-2007, 08:26 PM	#3
Ironhead Registered User Join Date: Feb 2007 Location: Westfield, Tioga County) Pennsylvania Posts: 113	Re: Manual locking hubs vs. auto locking.... Thanks 1969K - I have had no problems with the autos on the truck since I bought the truck in 1990. I did however, had them apart when I replacd the wheel bearings and u-joints. I have a new set of Warn hubs sitting on a shelf that I forgot about til you mentioned it. The instruction sheets has two part numbers Premium/20990 and Standard/9790 but don't tell what the difference is. They have the plastic locks so, I'm assuming Standard. Might as well use them and make it easier on myself. Thanks for the advice. __________________ Ironhead Mike '68 Panel 402BB '84 Shortbox 4X4 '85 Blazer '97 Silverado Ext. Cab

05-02-2007, 08:30 PM	#4
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,019	Re: Manual locking hubs vs. auto locking.... They should be the standard ones,like the ones below.I bought them for my 71 and have no problems with them.I would have liked to get heavier duty ones though but these sorta match the rims...lol Here are mine:

05-02-2007, 08:35 PM	#5
Ironhead Registered User Join Date: Feb 2007 Location: Westfield, Tioga County) Pennsylvania Posts: 113	Re: Manual locking hubs vs. auto locking.... Yes, they look exactly the same as yours. Thanks again for the replies. __________________ Ironhead Mike '68 Panel 402BB '84 Shortbox 4X4 '85 Blazer '97 Silverado Ext. Cab

05-03-2007, 12:32 PM	#6
jimmydean Registered User Join Date: May 2005 Location: Beaverton, OR Posts: 3,728	Re: Manual locking hubs vs. auto locking.... I prefer manual hubs. Also, Warn is a local company and their hubs are near bombproof. __________________ New Project: 1966 LWB C20 Plans: 1/2 ton conversion Dropmember front Dropmember rear Corvette discs Restored raised bed http://67-72chevytrucks.com/vboard/s....php?p=4295210

05-03-2007, 03:56 PM	#7
Hoods69BadBowTie Chevys Kick A$$ Join Date: Jan 2005 Location: Zootown, MT Posts: 12,699	Re: Manual locking hubs vs. auto locking.... I agree, I like the manual hubs alot better. Had too many bad experiences with the auto hubs. __________________ HOODS is what I answer too -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!!

05-04-2007, 09:38 AM	#8
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Manual locking hubs vs. auto locking.... Autos are fine for what most use their 4wds for...no 4wheeling/stock tires or slightly over.I had Warn Loc-O-Matics with 14.50/37s and the grenaded if I wheeled in Auto.Autos great to get out of a slick spot where you don`t really want to hop out,lock,move ten feet,hop out,disengage,and get back in.I wish Warn still made the Loc-O-Matics.I guess people(like me at first)just didn`t follow instructions.They say for off road use and compression braking lock-in.They should have mentioned why.Once I followed the "lock`em in to go 4wheeling/use auto for a quick slippery spot" method they where great. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

05-04-2007, 05:14 PM	#9
LONGHAIR just can't cover up my redneck Join Date: May 2004 Location: Columbus OH Posts: 11,414	Re: Manual locking hubs vs. auto locking.... Also, be aware that the factory auot-locking hubs require a special wheel bearing washer. The lock washer has 4 tabs that enguage part of the auto-hub's internal works. The standard washers (like from older trucks) do not have these tabs.



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