broken rear dana 60 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

69CvyPickup4x · 01-30-2007, 05:09 PM

yesterday i was takin off and i reved up the motor pretty good and dumped the clutch and didnt have good results..

i gotta a chirp out of the tires and a snap ping from the rear axle and that was that. I think i snaped an axle shaft, but not quite sure yet, ill find out later today if the rain doesnt keep up. I put it in gear, let the clutch out and the drive shaft turns and i get a thunk....thunk....thunk....thunk.. from the rear axle on the driver side. and the truck does not move absolutely anywhere..

The rear is from a 72' c20 with leaf springs has 4.10 gears and a limited slip. Im running a mild cammed 454 bored 60 over, with a sm465 tranny and 35" mud terrain tires.. I was kinda surprised i broke it.

kyull67 · 01-30-2007, 05:27 PM

Post up some pics when you find out what's destroyed.

Longhorn Man · 01-30-2007, 05:34 PM

where are you located out of curiosity

Blazer1970 · 01-30-2007, 05:49 PM

Rear Dana 60s have really weak axle shafts. They are about the same diameter as a Dana 44. The shafts in a corp. rear axle (HO52/72) are A LOT stronger.

70rs/ss · 01-30-2007, 06:04 PM

If you're lucky its just an axle, and a new one will be about $150 and a used (probably wouldn't do that, as you just broke a used one) for like $50-75. I though Dana 60's where the $h!t? I guess stock anything will break if you push it hard enough. An axle swap is the first thing I do to any build up, because they are usually 30+years old and they weren't made with the intention of surviving 3-5k rpm clutch drops!

CrashEd · 01-30-2007, 06:20 PM

Yep sounds like you broke the sheer pin. Or sometimes calles rear axles

69CvyPickup4x · 01-30-2007, 07:11 PM

The driver side axle shaft got twisted clean off, right before the splines. I dont have pics yet, but i will soon. I havent looked into who sells new axle shafts for that axle yet, does anyone know off hand who does? I live in Southern California; 15 mins from downtown LA.

shortbed70 · 01-30-2007, 10:19 PM

Buy good axles if you plan on doing that alot. D60's will hold alot of abuse if they have good parts or if your in situations were the wheels slip alot.

*trkklr77* · 01-30-2007, 11:14 PM

Quote:

Originally Posted by 70rs/ss

I though Dana 60's where the $h!t? !

no, front d60s are the ****!! rear d60 is meh. a 468 with a manual tranny, you need a 14bff or a d70

Quote:

Originally Posted by shortbed70

Buy good axles if you plan on doing that alot. D60's will hold alot of abuse if they have good parts or if your in situations were the wheels slip alot.

if the wheel would slip he wouldnt be breaking axles!

there is a standard TON of axle suppliers if you want to beef up. look in WWW.pirate4x4.com/forum in the vendor section

69CvyPickup4x · 01-30-2007, 11:15 PM

i guess you can have some good axle shafts made through off road design.. i just thought that it would just spin the tires and not be able to gain enough traction to break it, especially since its a pickup and there isnt very much weight on it. but i guess thats not the case.. im just gonna replace the shaft with a stocker and eventually swap in a 14 bolt..

**jerry moss** · 01-31-2007, 09:55 AM

14 bolts are a dime a dozen, dump the dana 60 quick since you're running tires bigger than stock. i run 14 bolts in both my 72s--much stronger .

bagged91 · 01-31-2007, 07:50 PM

I was running a 14 bolt in my old truck. Bulletproof... Held up good with a 425hp 383 stroker, built 700R4 & 4.10's/powertrax locker.

01-30-2007, 05:09 PM	#1
69CvyPickup4x Registered User Join Date: Apr 2006 Location: Bellflower Posts: 79	broken rear dana 60 yesterday i was takin off and i reved up the motor pretty good and dumped the clutch and didnt have good results.. i gotta a chirp out of the tires and a snap ping from the rear axle and that was that. I think i snaped an axle shaft, but not quite sure yet, ill find out later today if the rain doesnt keep up. I put it in gear, let the clutch out and the drive shaft turns and i get a thunk....thunk....thunk....thunk.. from the rear axle on the driver side. and the truck does not move absolutely anywhere.. The rear is from a 72' c20 with leaf springs has 4.10 gears and a limited slip. Im running a mild cammed 454 bored 60 over, with a sm465 tranny and 35" mud terrain tires.. I was kinda surprised i broke it.

01-30-2007, 05:27 PM	#2
kyull67 Registered User Join Date: Nov 2006 Location: Springfield/Kansas City Posts: 1,842	Re: broken rear dana 60 Post up some pics when you find out what's destroyed. __________________ The first '67 The current '67 '63 Biscayne

01-30-2007, 05:34 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: broken rear dana 60 where are you located out of curiosity

01-30-2007, 05:49 PM	#4
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,507	Re: broken rear dana 60 Rear Dana 60s have really weak axle shafts. They are about the same diameter as a Dana 44. The shafts in a corp. rear axle (HO52/72) are A LOT stronger. __________________ Tim

01-30-2007, 06:04 PM	#5
70rs/ss Registered User Join Date: Dec 2004 Location: Northern AZ Posts: 7,270	Re: broken rear dana 60 If you're lucky its just an axle, and a new one will be about $150 and a used (probably wouldn't do that, as you just broke a used one) for like $50-75. I though Dana 60's where the $h!t? I guess stock anything will break if you push it hard enough. An axle swap is the first thing I do to any build up, because they are usually 30+years old and they weren't made with the intention of surviving 3-5k rpm clutch drops!

01-30-2007, 06:20 PM	#6
CrashEd 72 chevy Join Date: Jan 2007 Location: Central Il Posts: 725	Re: broken rear dana 60 Yep sounds like you broke the sheer pin. Or sometimes calles rear axles

01-30-2007, 07:11 PM	#7
69CvyPickup4x Registered User Join Date: Apr 2006 Location: Bellflower Posts: 79	Re: broken rear dana 60 The driver side axle shaft got twisted clean off, right before the splines. I dont have pics yet, but i will soon. I havent looked into who sells new axle shafts for that axle yet, does anyone know off hand who does? I live in Southern California; 15 mins from downtown LA.

01-30-2007, 10:19 PM	#8
shortbed70 Registered User Join Date: Mar 2002 Location: Forney TX Posts: 4,512	Re: broken rear dana 60 Buy good axles if you plan on doing that alot. D60's will hold alot of abuse if they have good parts or if your in situations were the wheels slip alot. __________________ Troy 1965 Chevy Bagged,361 sbc,voodoo cam,1.5 full roller rockers,patriot 185cc vortec heads 2.02-1.60,vortec weiand polished intake,demon carb my truckhttp://67-72chevytrucks.com/vboard/s...d.php?t=332884 Big Red Dog build http://67-72chevytrucks.com/vboard/s...d.php?t=572274

01-30-2007, 11:15 PM	#10
69CvyPickup4x Registered User Join Date: Apr 2006 Location: Bellflower Posts: 79	Re: broken rear dana 60 i guess you can have some good axle shafts made through off road design.. i just thought that it would just spin the tires and not be able to gain enough traction to break it, especially since its a pickup and there isnt very much weight on it. but i guess thats not the case.. im just gonna replace the shaft with a stocker and eventually swap in a 14 bolt..

01-31-2007, 09:55 AM	#11
jerry moss Born Psycho Join Date: Feb 2001 Location: brentwood,cal,usa Posts: 4,936	Re: broken rear dana 60 14 bolts are a dime a dozen, dump the dana 60 quick since you're running tires bigger than stock. i run 14 bolts in both my 72s--much stronger . __________________ 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

01-31-2007, 07:50 PM	#12
bagged91 Out draggin' Join Date: Jan 2004 Location: Pitman,NJ Posts: 1,574	Re: broken rear dana 60 I was running a 14 bolt in my old truck. Bulletproof... Held up good with a 425hp 383 stroker, built 700R4 & 4.10's/powertrax locker. __________________ 91 GMC Xcab LB-Bags/bd/caddy clip SOLD 72 C10 Cheyenne Super LWB SOLD 92 GMC K1500 Burb 72 C10 Burb (ex. Cheesewagon)SOLD 72 C20 Burb parts truck 71 C10 Burb "project"



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