72 rear end - The 1947 - Present Chevrolet & GMC Truck Message Board Network

z7199 · 03-06-2007, 06:32 PM

Got the motor done BB 407 with 460 HP and 450 tq with a TH400 with a 2600 TCI converter behind that. Now I need a rear end what do you guys suggest something strong. The truck is a 72 3/4 ton with a stock rear end going to need a locker and springs either leaf or coils any help greatly appreciated!!!

70LongbedC20 · 03-07-2007, 06:49 AM

Which rear axle do you have? I have a small 14 bolt under my 70 3/4 ton. I would like to hear what other members have to say about upgrade options etc.

**special-K** · 03-07-2007, 07:42 AM

The HO52 Eaton can handle whatever you throw at it.Lockers are tough to find.You can use the 14-bolt application with 14-bolt axles,but the ends need a bit cut off and dressed.What suspension is in the truck now?I`d stay with that,unless you`re ready for some major work.

z7199 · 03-08-2007, 09:18 PM

Also here is a pic of my rear end How much are we talikng in a 9" and I also hate buying parts 2...3...4... or more times!!!

the truck is stock as far as suspension and rear end goes

z7199 · 03-09-2007, 07:02 PM

Ttt

mnunn454 · 03-09-2007, 10:10 PM

While a 9" adapted for your setup would be ideal, I'd think a normal posi 12-bolt setup should be plenty adequate for your output. If you have any doubts, add a "girdle" (I think they're called) to preload the rear caps and keep the ring gear in place under high torque loads, and maybe a set of billet axles.

**kwmech** · 03-09-2007, 10:28 PM

Gonna hafta try hard to damage that D60, the weak spot will be the 30 spline shafts over time.

Longhorn Man · 03-09-2007, 10:52 PM

just run what you have, no need to replace it

z7199 · 03-10-2007, 12:28 AM

So it is a dana 60? how can I tell for sure?

03-06-2007, 06:32 PM	#1
z7199 Registered User Join Date: Apr 2005 Location: Houston TX Posts: 76	72 rear end Got the motor done BB 407 with 460 HP and 450 tq with a TH400 with a 2600 TCI converter behind that. Now I need a rear end what do you guys suggest something strong. The truck is a 72 3/4 ton with a stock rear end going to need a locker and springs either leaf or coils any help greatly appreciated!!! __________________ 99 nbs 5.3L x-cab Hypertech programmer True dual 1 chamber flowmasters magnaflow x-pipe 3" PA body lift 315/75/16 BFG All Terrian 15.3 @ 89mph 72' C20 402ci sc,lb in bed tool box, and new paint http://www.cardomain.com/memberpage/456511/1

03-07-2007, 06:49 AM	#2
70LongbedC20 Registered User Join Date: Feb 2007 Location: France Posts: 53	Re: 72 rear end Which rear axle do you have? I have a small 14 bolt under my 70 3/4 ton. I would like to hear what other members have to say about upgrade options etc.

03-07-2007, 07:42 AM	#3
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,858	Re: 72 rear end The HO52 Eaton can handle whatever you throw at it.Lockers are tough to find.You can use the 14-bolt application with 14-bolt axles,but the ends need a bit cut off and dressed.What suspension is in the truck now?I`d stay with that,unless you`re ready for some major work. __________________ "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 ~

03-08-2007, 09:18 PM	#4
z7199 Registered User Join Date: Apr 2005 Location: Houston TX Posts: 76	Re: 72 rear end Also here is a pic of my rear end How much are we talikng in a 9" and I also hate buying parts 2...3...4... or more times!!! the truck is stock as far as suspension and rear end goes __________________ 99 nbs 5.3L x-cab Hypertech programmer True dual 1 chamber flowmasters magnaflow x-pipe 3" PA body lift 315/75/16 BFG All Terrian 15.3 @ 89mph 72' C20 402ci sc,lb in bed tool box, and new paint http://www.cardomain.com/memberpage/456511/1

03-09-2007, 07:02 PM	#5
z7199 Registered User Join Date: Apr 2005 Location: Houston TX Posts: 76	Re: 72 rear end Ttt __________________ 99 nbs 5.3L x-cab Hypertech programmer True dual 1 chamber flowmasters magnaflow x-pipe 3" PA body lift 315/75/16 BFG All Terrian 15.3 @ 89mph 72' C20 402ci sc,lb in bed tool box, and new paint http://www.cardomain.com/memberpage/456511/1

03-09-2007, 10:10 PM	#6
mnunn454 Registered User Join Date: Dec 2006 Location: Rhode Island Posts: 602	Re: 72 rear end While a 9" adapted for your setup would be ideal, I'd think a normal posi 12-bolt setup should be plenty adequate for your output. If you have any doubts, add a "girdle" (I think they're called) to preload the rear caps and keep the ring gear in place under high torque loads, and maybe a set of billet axles. __________________ 69 C-10 SWB Fleetside 454/TH400 (For Sale) http://67-72chevytrucks.com/vboard/c...ct=1299&cat=12 70 El Camino 454 TH700 29 Model A 4-DR Sedan Deluxe

03-09-2007, 10:28 PM	#7
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,561	Re: 72 rear end Gonna hafta try hard to damage that D60, the weak spot will be the 30 spline shafts over time.

03-09-2007, 10:52 PM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: 72 rear end just run what you have, no need to replace it

03-10-2007, 12:28 AM	#9
z7199 Registered User Join Date: Apr 2005 Location: Houston TX Posts: 76	Re: 72 rear end So it is a dana 60? how can I tell for sure? __________________ 99 nbs 5.3L x-cab Hypertech programmer True dual 1 chamber flowmasters magnaflow x-pipe 3" PA body lift 315/75/16 BFG All Terrian 15.3 @ 89mph 72' C20 402ci sc,lb in bed tool box, and new paint http://www.cardomain.com/memberpage/456511/1



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