14 bolt factory heavy duty six lug - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rustyg · 08-19-2007, 01:33 AM

I read about these rears in 4 Wheel & Off Road last year in the October 2006 edition. They were put in 3/4 ton six lug trucks in the late 80's and 90'. It is a semi floating 9.5 inch ring gear version of the 14 bolt with a 6x5.5 lug pattern. They require a u-joint conversion kit for a swap, that's it. Anyone have additional info on one of these or where one might be?

**special-K** · 08-19-2007, 11:10 PM

Junk yards.They came in the light duty 2500s.If you see a 2500 emblem and 6-lugs you`re there.

Longhorn Man · 08-19-2007, 11:17 PM

just outta curiosity... whats wrong with the 12 bolt in the truck now?

**jerry moss** · 08-20-2007, 11:16 AM

FYI, they also came in a 5 lug version in the SS454 trucks. they are stronger than a stock 12 bolt, larger ring gear diameter , larger axle shaft diameter. i have an 8 lug version semi float i'm putting under my blazer with 4:10s and posi. 5 and 6 lug versions are not too common around here and junkyards want a fortune for them.

rustyg · 08-20-2007, 09:16 PM

Longhorn, I'm just looking for some extra strength. Like alot of the good folks here, I appreciate a smoky burnout, but running 35's I always have a fear of snapping a rear axle.

ETA Is there a difference between the 2wheel and 4 wheel drive rears? The closest parts guy has a few in stock, any pointers on picking a good one? One time at age of 18 I had a 1970 1 ton dually with a 14' flatbed I used to tow a concrete pump, I replaced the steering box hastily (had to use my truck in the morning for a job) upon my test drive I found I had to turn my wheel in the opposite direction, I considered giving it a try but common sense prevailed. Back to the parts store, again. I also did a weekend motor swap that took me all of Sunday night into Monday morning early. I put the old motor on the flatbed, on this test drive I lost the motor coming around the corner near my house, it rolled all the way up to someones front door at 2 in the a.m. imagine their surprise in the morning. Sorry for rambling on, just reminiscing a bit.

08-19-2007, 01:33 AM	#1
rustyg Registered User Join Date: Dec 2003 Location: Gap-Pa. Posts: 186	14 bolt factory heavy duty six lug I read about these rears in 4 Wheel & Off Road last year in the October 2006 edition. They were put in 3/4 ton six lug trucks in the late 80's and 90'. It is a semi floating 9.5 inch ring gear version of the 14 bolt with a 6x5.5 lug pattern. They require a u-joint conversion kit for a swap, that's it. Anyone have additional info on one of these or where one might be? __________________ 71 k10 swb 72 k5 72 Burb 4x4 72 GMC Burb 4x4 Last edited by rustyg; 08-19-2007 at 01:35 AM. Reason: speeling

08-19-2007, 11:10 PM	#2
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: 14 bolt factory heavy duty six lug Junk yards.They came in the light duty 2500s.If you see a 2500 emblem and 6-lugs you`re there. __________________ "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 ~

08-19-2007, 11:17 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: 14 bolt factory heavy duty six lug just outta curiosity... whats wrong with the 12 bolt in the truck now?

08-20-2007, 11:16 AM	#4
jerry moss Born Psycho Join Date: Feb 2001 Location: brentwood,cal,usa Posts: 4,943	Re: 14 bolt factory heavy duty six lug FYI, they also came in a 5 lug version in the SS454 trucks. they are stronger than a stock 12 bolt, larger ring gear diameter , larger axle shaft diameter. i have an 8 lug version semi float i'm putting under my blazer with 4:10s and posi. 5 and 6 lug versions are not too common around here and junkyards want a fortune for them. __________________ jerry moss 72 cheyenne super K20- tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,tow hooks,bumper guards,toolbox,aux. fuel tank,posi front and rear,plus other goodies!!! SOLD 69 suburban K20-tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,4 inch all spring lift,4 speed, 14 bolt full floater, dana 44 HD,warn winch,posi front and rear,tow hooks,plus other goodies. 73/80 chevy/gmc K20 SB400,turbo 400,205,tilt,a-c,gas hog. 77 K/5 cheyenne blazer-daily driver/beater. SON HAS IT NOW BRENTWOOD,CALIFORNIA

08-20-2007, 09:16 PM	#5
rustyg Registered User Join Date: Dec 2003 Location: Gap-Pa. Posts: 186	Re: 14 bolt factory heavy duty six lug Longhorn, I'm just looking for some extra strength. Like alot of the good folks here, I appreciate a smoky burnout, but running 35's I always have a fear of snapping a rear axle. ETA Is there a difference between the 2wheel and 4 wheel drive rears? The closest parts guy has a few in stock, any pointers on picking a good one? One time at age of 18 I had a 1970 1 ton dually with a 14' flatbed I used to tow a concrete pump, I replaced the steering box hastily (had to use my truck in the morning for a job) upon my test drive I found I had to turn my wheel in the opposite direction, I considered giving it a try but common sense prevailed. Back to the parts store, again. I also did a weekend motor swap that took me all of Sunday night into Monday morning early. I put the old motor on the flatbed, on this test drive I lost the motor coming around the corner near my house, it rolled all the way up to someones front door at 2 in the a.m. imagine their surprise in the morning. Sorry for rambling on, just reminiscing a bit. __________________ 71 k10 swb 72 k5 72 Burb 4x4 72 GMC Burb 4x4 Last edited by rustyg; 08-20-2007 at 09:37 PM.



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