Er, what is this on my rear axle? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Patrick Sullivan · 05-21-2002, 07:44 PM

One side's attached to a perch on the axle and the other side is attached to the frame. The picture is pretty bad, but it's hard to get up in there with the spare tire back in.

What the heck is this? Is it stock?

Big69C20 Toy · 05-21-2002, 07:47 PM

First let me congratualte you on a big fat healthy juicy HO72 rear end, hehe. That bar is called a panhard bar i believe, it makes the rear more stable in turning situations when loaded and whatnot i think. If i'm wrong then someone on here knows and will say it and what it's for. Good luck.
Greg

------------------
69 Custom 20, 396BB,Longbed fleetside.
New Oak Bed With SS strips.

Edelbrock performer RPM-O, Edelbrock 750Carb, Headers, HEI, 2 40" glasspacks.
Stereo: Classic-style tape deck/radio, 2 6x9 Cerwin Vega's in doors, 2 10" Neo subs under seats, 1 900 Watt amp.

SN= Ares220 on AIM.

Located in Beautiful Southern Cali or Michigan when i'm at school.

ebfabman · 05-21-2002, 07:49 PM

Track bar or pan hard bar. All coil spring trucks have them. It keep the rear end "in line" with the front wheels(limits lateral movement of the rear suspension)

Patrick Sullivan · 05-21-2002, 07:54 PM

Ah, ok. I suppose it's nice not to have your axle drifting back and forth under you.. Thanks all.

And yea, it's one heck of a rear end. Too bad I can't get it to stop leaking out the bottom..

[This message has been edited by Patrick Sullivan (edited May 21, 2002).]

hoberes68 · 05-21-2002, 08:32 PM

I posted a topic on the drivetrain board about this, but the rearend I bought yesterday looks a helluva lot like the one in the picture there. The only difference is mine might has the 10 bolts for the rear cover evenly spaced and there is a relief at the top and bottom for the ring gear to fit. Also the front and back are held on with studs that look like little wheel studs, 3/8" fine thread (9/16 wrench) Does anyone know where the ID numbers are on these rears? Also, it is a bit narrower overall than my 12-bolt. Any help identifying this rearend would be most helpful.
Thanks,
Rob

Longhorn Man · 05-21-2002, 10:19 PM

When i bought my GMC, the panhard bar was missing. That thins would sway and drift all over the road. When I got over 40, I was scared I was gonna lose control. Also made my tires rub like crazy too.
It doesn't so much keep your rear axle from moving, as much as keeps the rear of the truck centered over the rear axle.

------------------
'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
E-mail longhornmail@yahoo.com
My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough?
Columbus Ohio

Alexis · 05-21-2002, 10:29 PM

lol, that was great, hehehe sorry got a real kick out of that one

------------------
Britney: 1970 2wd K/5 Blazer (gots to go)
Jessica: 1967 2wd SWB (not yet decided on furture)
Helga: 1972 4x4 3/4ton LWB (going to go too)

AIM:Alexmart1
Mountain View, Cali

Longhorn Man · 05-21-2002, 10:37 PM

Other than a tire, that bar was the very first thing bought for it. Best 5 bucks I spent on it to date.

------------------
'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
E-mail longhornmail@yahoo.com
My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough?
Columbus Ohio

ebfabman · 05-21-2002, 10:53 PM

The track bar also defines the rear roll center, where the track bar intersects the ring gear.

Spoof · 05-21-2002, 11:38 PM

The manual refers to it as a "tie rod" but no one will know what your talking about if you call it by that name. They will roll their eyes and explain to you that the tie rods are on the front suspension...blah...blah. Its fun to provoke parts guys when searching for bushings by calling it that. Has anyone ever found a replacement bushings for a panhard bar?

------------------
71 GMC 2500 Custom Camper
71 GMC Suburban 1500 Super Custom
71 Chevrolet 1500 Donor
http://www.able-bravo.com

Tim Rich · 05-22-2002, 06:08 AM

I believe Classic Performance has them. Haven't ordered them so I don't know for sure.
http://www.classicperform.com/6092ch...#rear-bushings
http://www.classicperform.com/produc...ngs-Rubber.htm

------------------
Tim Rich
Kennesaw, GA
72 Stepside
65 Must@ng

JJR · 05-22-2002, 06:34 AM

Spoof, I got a set of Energy Suspension bushings for my track bar at the local parts store for under $10. If you want the factory rubber set they are available also.

SoCal71K20 · 05-22-2002, 11:46 AM

Big69C20,sounds like you are familiar with
this rearend.Is HO72 a code for this rear.I
know hardly anything about them.They seem
pretty stout looking though.I have one under
my 71 3/4 ton 4x4 pickup.Gearing is either
4:11 or 4:56 I believe.I know that it is
popular to put a big Chevy 14 bolt in when
these go south.Must be parts availability or
something.Mine seems to hold up well.Do you
have any info? Thanks.

Big69C20 Toy · 05-22-2002, 11:58 AM

Yeah either 4.10, 4.57(i think) and 3.90 are the only gears i've ever been able to find for these. There are some parts available for these thigns but not very many. the 14 bolt swap is common because of availability i think yes. I found 3.90 gears (in search of lower rpms) but new the set was like 260 and i have 4.10 now so not much of a gain for the money. They dont die if you keep em lubed. I heard about some fiberglass hemi that kept ruining any rear end it had, they swapped that 10bolt in there and been running it ever since. The reading was it broke BUILT dana 60s and about anything else out there cuz the car was so light and had so much power transfer to the rear. It'd snap a rear end after one run supposedly. They said since they put that ho72 in it's been running 6 years with no problems at tons of drag events. Could all be a bunch of hooey but hey makes a good story...
ok i'm done rambling now...

------------------
69 Custom 20, 396BB,Longbed fleetside.
New Oak Bed With SS strips.

Edelbrock performer RPM-O, Edelbrock 750Carb, Headers, HEI, 2 40" glasspacks.
Stereo: Classic-style tape deck/radio, 2 6x9 Cerwin Vega's in doors, 2 10" Neo subs under seats, 1 900 Watt amp.

SN= Ares220 on AIM.

Located in Beautiful Southern Cali or Michigan when i'm at school.

Vince M · 05-22-2002, 05:00 PM

One of the reasons the HO72 leaks is because the bolt holes go right through the housing. This is on both sides..the cover and the third member.(axles too). Drain the oil..pull all the bolts and put gasket sealer on all of them (the threads). The lower bolts will leak more because they are submerged all the time.
When I swapped to the 14 bolt this is one of the improvements they made..none of the bolts see oil.(among other things).

------------------
Orlando,FL
72 Chevy 4x4 3/4T CustomCamper w/SB 406

ViperRed67 · 05-22-2002, 05:05 PM

I have the same set-up but my axle is a Dana 60. I think it came out of a 71 3/4

**COBALT** · 05-22-2002, 06:00 PM

I have two of those bad-boy rear-end differentials. One under my daily driver and one under my parts truck. Both were originally set up with 4.10 gears. They carry spiders (unless the original owner opted for an eaton posi unit or one of the earlier lockers).

This was my first major problem with my C20 after I bought it. I noticed that a dull roaring noise would happen around 50 mph (2500-3000 rpm). It would only make noise if my foot was on the gas petal. At first it was just anoying, but over time it got so bad that the vibration could be felt through the steering wheel. At the time I was a dumb-a$$, and should have pulled the pan, but I was a whimp. I wouldn't have hesitated now...

Anyway, I took it to Randy's Ring & Pinion in Everett, WA. because I heard a lot of good things about them. Turns out 1 of the 4 spiders had blown its bearing, heated up and welded itself to the carrier cross-pin. The remaining 3 busted the teeth off of it and kept turning. Over time the carrier bearings ate themselves up, and that's the roaring noise. Ironically, the 4.10 gear set was flawless!

I had it completely rebuilt with new carrier bearings, 3.90s and a detroit locker. Now it kicks serious a$$, but it cost me a bundle but oh well. I didn't want to go searching for a new axle, driveline, etc. etc....

These are known as 10 bolt GM Corporate differential. They exist with 8 and 10 lug axles. The carriers were made by eaton corp, and at the time were the best around. They just don't wear very good over 35 years. HO52 (5200lb) axles were supposed to be the only coil sprung axle of this type for 3/4 ton trucks, and HO72 (7200lb) axles were supposedly leaf sprung only and under 1 tons. I don't believe this because the codes on my C20 indicate an HO72, it's coil sprung like yours, and the GVW of the truck is 7500lbs!

Anyway, here are the locations of the codes if you want to do your own homework:

------------------
'69 3/4 ton C20 2wd w/ 350ci/400THM and a wood bed!
'69 3/4 ton Custom 20 2wd w/ ORIGINAL 350ci/4sp Manual and a wood bed (parts beast).
Seattle, WA.

*See pics of my trucks and project at www.webshots.com!

SoCal71K20 · 05-22-2002, 11:06 PM

Lot's of good info here.I learned some things
about these rearends that I did not know. I"ll keep running my leaf sprung rearend till
it won't run no more.I recently had fun locating rear drums and shoes to rebuild the
brakes on my 8 lugger.Pulled full floater
axles and went at it.

Dean · 05-23-2002, 07:57 AM

The drag car that is using the Eaton rearend is the "Hemi Under Glass" car. I have talked to him several times about it. This is the wheelstander car. He uses the open rearends because he steers with the back brakes.

*Randy70C-10* · 05-23-2002, 08:06 AM

I think that's common with wheelstanders. Both rear brakes work independently to keep the car straight while to front wheels are off the ground. Those things are cool!

Patrick Sullivan · 05-23-2002, 06:22 PM

Is there a site with decoding information for these axles? I got the numbers off of it, but I don't have a clue what they mean..

------------------
1972 Chevy C-20 Cheyenne
Rockaway Beach, Oregon

Vince M · 05-23-2002, 07:48 PM

I've got to differ with New69Owner. The rear end pictured is not refered to as a 10 bolt Corporate. There is a completely different axle that is a ten bolt and was used as a front axle on some of the earlier year trucks. Much much smaller and I think it was only used on half tons. I've found that refering to it as a Eaton or the HO72 is the best bet and eliminates confusion.
I had the same problem with my Eaton as New69 with my spiders. I found the inside splines worn and was getting the big "clunk" when put into gear. My 4.10 gears were in excellent shape just couldn't find spiders or axles. I did find some used ones but when I found a used 14 bolt locally for cheap..I jumped on it. Completely dismantled the 14 bolt and rebuilt it for a lot less than the parts of an Eaton. Got the larger 13" drums in the rear and now have a 3.73 rear with the option of lower gears if I want.

------------------
Orlando,FL
72 Chevy 4x4 3/4T CustomCamper w/SB 406

05-21-2002, 07:44 PM	#1
Patrick Sullivan Transcendental Trucker Join Date: Dec 2001 Location: Rockaway Beach, OR Posts: 374	Er, what is this on my rear axle? One side's attached to a perch on the axle and the other side is attached to the frame. The picture is pretty bad, but it's hard to get up in there with the spare tire back in. What the heck is this? Is it stock? __________________ Patrick Sullivan \| sullivan@oregoncoast.com Rockaway Beach, Oregon 1972 Chevy Cheyenne C-20 1998 Dodge Dakota 4x4 So, fill to me the parting glass And drink a health whate'er befalls... Then gently rise and softly call Goodnight and joy be to you all!

05-21-2002, 07:47 PM	#2
Big69C20 Toy Livin' it up. Join Date: Nov 2001 Location: Richland, MI Posts: 2,212	First let me congratualte you on a big fat healthy juicy HO72 rear end, hehe. That bar is called a panhard bar i believe, it makes the rear more stable in turning situations when loaded and whatnot i think. If i'm wrong then someone on here knows and will say it and what it's for. Good luck. Greg ------------------ 69 Custom 20, 396BB,Longbed fleetside. New Oak Bed With SS strips. Edelbrock performer RPM-O, Edelbrock 750Carb, Headers, HEI, 2 40" glasspacks. Stereo: Classic-style tape deck/radio, 2 6x9 Cerwin Vega's in doors, 2 10" Neo subs under seats, 1 900 Watt amp. SN= Ares220 on AIM. Located in Beautiful Southern Cali or Michigan when i'm at school. __________________ -Greg; Sold the 69 C20. It's off to a better home with more love! Now onto the 86 CUCV M1009; K5 blazer with 6.2L diesel, corp 10 bolt axles, Detroit locker in the rear, trutrac front, 3.73 gears, 35" tires.

05-21-2002, 07:54 PM	#4
Patrick Sullivan Transcendental Trucker Join Date: Dec 2001 Location: Rockaway Beach, OR Posts: 374	Ah, ok. I suppose it's nice not to have your axle drifting back and forth under you.. Thanks all. And yea, it's one heck of a rear end. Too bad I can't get it to stop leaking out the bottom.. [This message has been edited by Patrick Sullivan (edited May 21, 2002).] __________________ Patrick Sullivan \| sullivan@oregoncoast.com Rockaway Beach, Oregon 1972 Chevy Cheyenne C-20 1998 Dodge Dakota 4x4 So, fill to me the parting glass And drink a health whate'er befalls... Then gently rise and softly call Goodnight and joy be to you all!

05-21-2002, 08:32 PM	#5
hoberes68 Registered User Join Date: Jan 2000 Location: san diego Posts: 323	I posted a topic on the drivetrain board about this, but the rearend I bought yesterday looks a helluva lot like the one in the picture there. The only difference is mine might has the 10 bolts for the rear cover evenly spaced and there is a relief at the top and bottom for the ring gear to fit. Also the front and back are held on with studs that look like little wheel studs, 3/8" fine thread (9/16 wrench) Does anyone know where the ID numbers are on these rears? Also, it is a bit narrower overall than my 12-bolt. Any help identifying this rearend would be most helpful. Thanks, Rob __________________ 1968 C-10

05-21-2002, 11:38 PM	#10
Spoof Registered User Join Date: Jul 2000 Location: Victoria,BC, Canada Posts: 1,300	The manual refers to it as a "tie rod" but no one will know what your talking about if you call it by that name. They will roll their eyes and explain to you that the tie rods are on the front suspension...blah...blah. Its fun to provoke parts guys when searching for bushings by calling it that. Has anyone ever found a replacement bushings for a panhard bar? ------------------ 71 GMC 2500 Custom Camper 71 GMC Suburban 1500 Super Custom 71 Chevrolet 1500 Donor http://www.able-bravo.com __________________ 71 GMC 1500 LWB

05-21-2002, 07:49 PM	#3
ebfabman Registered User Join Date: Nov 2001 Location: Concord, NC Posts: 2,489	Track bar or pan hard bar. All coil spring trucks have them. It keep the rear end "in line" with the front wheels(limits lateral movement of the rear suspension)

05-21-2002, 10:19 PM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	When i bought my GMC, the panhard bar was missing. That thins would sway and drift all over the road. When I got over 40, I was scared I was gonna lose control. Also made my tires rub like crazy too. It doesn't so much keep your rear axle from moving, as much as keeps the rear of the truck centered over the rear axle. ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. E-mail longhornmail@yahoo.com My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough? Columbus Ohio

05-21-2002, 10:29 PM	#7
Alexis Member since 2000 Join Date: Dec 2000 Location: Mountain View Ca / Mexico Posts: 7,879	lol, that was great, hehehe sorry got a real kick out of that one ------------------ Britney: 1970 2wd K/5 Blazer (gots to go) Jessica: 1967 2wd SWB (not yet decided on furture) Helga: 1972 4x4 3/4ton LWB (going to go too) AIM:Alexmart1 Mountain View, Cali

05-21-2002, 10:37 PM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Other than a tire, that bar was the very first thing bought for it. Best 5 bucks I spent on it to date. ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. E-mail longhornmail@yahoo.com My name is Andy...not Randy...I'm in Ohio...Not Illinois...close enough? Columbus Ohio

05-21-2002, 10:53 PM	#9
ebfabman Registered User Join Date: Nov 2001 Location: Concord, NC Posts: 2,489	The track bar also defines the rear roll center, where the track bar intersects the ring gear.

05-22-2002, 06:08 AM	#11
Tim Rich Registered User Join Date: Apr 2002 Location: Kennesaw, GA Posts: 56	I believe Classic Performance has them. Haven't ordered them so I don't know for sure. http://www.classicperform.com/6092ch...#rear-bushings http://www.classicperform.com/produc...ngs-Rubber.htm ------------------ Tim Rich Kennesaw, GA 72 Stepside 65 Must@ng __________________ Tim Rich Kennesaw, GA 72 Stepside 65 Must@ng

05-22-2002, 06:34 AM	#12
JJR Registered User Join Date: Apr 2000 Location: Leesburg, GA Posts: 746	Spoof, I got a set of Energy Suspension bushings for my track bar at the local parts store for under $10. If you want the factory rubber set they are available also. __________________ FOUNDING MEMBER OF THE DRUM BRAKE CLUB Second Owner 70 C-10 Second Owner 93 GMC C1500 Third Owner 99 C2500 Crew Cab Short Bed

05-22-2002, 11:46 AM	#13
SoCal71K20 Registered User Join Date: Jan 2002 Location: Lemon Grove, California Posts: 152	Big69C20,sounds like you are familiar with this rearend.Is HO72 a code for this rear.I know hardly anything about them.They seem pretty stout looking though.I have one under my 71 3/4 ton 4x4 pickup.Gearing is either 4:11 or 4:56 I believe.I know that it is popular to put a big Chevy 14 bolt in when these go south.Must be parts availability or something.Mine seems to hold up well.Do you have any info? Thanks.

05-22-2002, 11:58 AM	#14
Big69C20 Toy Livin' it up. Join Date: Nov 2001 Location: Richland, MI Posts: 2,212	Yeah either 4.10, 4.57(i think) and 3.90 are the only gears i've ever been able to find for these. There are some parts available for these thigns but not very many. the 14 bolt swap is common because of availability i think yes. I found 3.90 gears (in search of lower rpms) but new the set was like 260 and i have 4.10 now so not much of a gain for the money. They dont die if you keep em lubed. I heard about some fiberglass hemi that kept ruining any rear end it had, they swapped that 10bolt in there and been running it ever since. The reading was it broke BUILT dana 60s and about anything else out there cuz the car was so light and had so much power transfer to the rear. It'd snap a rear end after one run supposedly. They said since they put that ho72 in it's been running 6 years with no problems at tons of drag events. Could all be a bunch of hooey but hey makes a good story... ok i'm done rambling now... ------------------ 69 Custom 20, 396BB,Longbed fleetside. New Oak Bed With SS strips. Edelbrock performer RPM-O, Edelbrock 750Carb, Headers, HEI, 2 40" glasspacks. Stereo: Classic-style tape deck/radio, 2 6x9 Cerwin Vega's in doors, 2 10" Neo subs under seats, 1 900 Watt amp. SN= Ares220 on AIM. Located in Beautiful Southern Cali or Michigan when i'm at school. __________________ -Greg; Sold the 69 C20. It's off to a better home with more love! Now onto the 86 CUCV M1009; K5 blazer with 6.2L diesel, corp 10 bolt axles, Detroit locker in the rear, trutrac front, 3.73 gears, 35" tires.

05-22-2002, 05:00 PM	#15
Vince M Senior Member Join Date: Apr 2000 Location: Orlando, FL Posts: 1,076	One of the reasons the HO72 leaks is because the bolt holes go right through the housing. This is on both sides..the cover and the third member.(axles too). Drain the oil..pull all the bolts and put gasket sealer on all of them (the threads). The lower bolts will leak more because they are submerged all the time. When I swapped to the 14 bolt this is one of the improvements they made..none of the bolts see oil.(among other things). ------------------ Orlando,FL 72 Chevy 4x4 3/4T CustomCamper w/SB 406 __________________ ............................................................ 68 Chevy CST SWB w/LS1, carb & 700r4. Golden Anniversary clone with a few improvements.



Register or Log In To remove these advertisements.

05-22-2002, 05:05 PM	#16
ViperRed67 Registered User Join Date: Apr 2002 Location: Holley, Oregon Posts: 32	I have the same set-up but my axle is a Dana 60. I think it came out of a 71 3/4

05-22-2002, 06:00 PM	#17
COBALT Senior Member Join Date: Sep 2001 Location: Seattle, WA, USA Posts: 5,817	I have two of those bad-boy rear-end differentials. One under my daily driver and one under my parts truck. Both were originally set up with 4.10 gears. They carry spiders (unless the original owner opted for an eaton posi unit or one of the earlier lockers). This was my first major problem with my C20 after I bought it. I noticed that a dull roaring noise would happen around 50 mph (2500-3000 rpm). It would only make noise if my foot was on the gas petal. At first it was just anoying, but over time it got so bad that the vibration could be felt through the steering wheel. At the time I was a dumb-a$$, and should have pulled the pan, but I was a whimp. I wouldn't have hesitated now... Anyway, I took it to Randy's Ring & Pinion in Everett, WA. because I heard a lot of good things about them. Turns out 1 of the 4 spiders had blown its bearing, heated up and welded itself to the carrier cross-pin. The remaining 3 busted the teeth off of it and kept turning. Over time the carrier bearings ate themselves up, and that's the roaring noise. Ironically, the 4.10 gear set was flawless! I had it completely rebuilt with new carrier bearings, 3.90s and a detroit locker. Now it kicks serious a$$, but it cost me a bundle but oh well. I didn't want to go searching for a new axle, driveline, etc. etc.... These are known as 10 bolt GM Corporate differential. They exist with 8 and 10 lug axles. The carriers were made by eaton corp, and at the time were the best around. They just don't wear very good over 35 years. HO52 (5200lb) axles were supposed to be the only coil sprung axle of this type for 3/4 ton trucks, and HO72 (7200lb) axles were supposedly leaf sprung only and under 1 tons. I don't believe this because the codes on my C20 indicate an HO72, it's coil sprung like yours, and the GVW of the truck is 7500lbs! Anyway, here are the locations of the codes if you want to do your own homework: ------------------ '69 3/4 ton C20 2wd w/ 350ci/400THM and a wood bed! '69 3/4 ton Custom 20 2wd w/ ORIGINAL 350ci/4sp Manual and a wood bed (parts beast). Seattle, WA. *See pics of my trucks and project at www.webshots.com! __________________ '69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA.

05-22-2002, 11:06 PM	#18
SoCal71K20 Registered User Join Date: Jan 2002 Location: Lemon Grove, California Posts: 152	Lot's of good info here.I learned some things about these rearends that I did not know. I"ll keep running my leaf sprung rearend till it won't run no more.I recently had fun locating rear drums and shoes to rebuild the brakes on my 8 lugger.Pulled full floater axles and went at it.

05-23-2002, 07:57 AM	#19
Dean Senior Member Join Date: Jan 2000 Location: Cincinnati, Ohio Posts: 1,492	The drag car that is using the Eaton rearend is the "Hemi Under Glass" car. I have talked to him several times about it. This is the wheelstander car. He uses the open rearends because he steers with the back brakes.

05-23-2002, 08:06 AM	#20
Randy70C-10 Account Suspended Join Date: Mar 2001 Location: Virginia Beach, Va. U.S.A. Posts: 15,320	I think that's common with wheelstanders. Both rear brakes work independently to keep the car straight while to front wheels are off the ground. Those things are cool!

05-23-2002, 06:22 PM	#21
Patrick Sullivan Transcendental Trucker Join Date: Dec 2001 Location: Rockaway Beach, OR Posts: 374	Is there a site with decoding information for these axles? I got the numbers off of it, but I don't have a clue what they mean.. ------------------ 1972 Chevy C-20 Cheyenne Rockaway Beach, Oregon __________________ Patrick Sullivan \| sullivan@oregoncoast.com Rockaway Beach, Oregon 1972 Chevy Cheyenne C-20 1998 Dodge Dakota 4x4 So, fill to me the parting glass And drink a health whate'er befalls... Then gently rise and softly call Goodnight and joy be to you all!

05-23-2002, 07:48 PM	#22
Vince M Senior Member Join Date: Apr 2000 Location: Orlando, FL Posts: 1,076	I've got to differ with New69Owner. The rear end pictured is not refered to as a 10 bolt Corporate. There is a completely different axle that is a ten bolt and was used as a front axle on some of the earlier year trucks. Much much smaller and I think it was only used on half tons. I've found that refering to it as a Eaton or the HO72 is the best bet and eliminates confusion. I had the same problem with my Eaton as New69 with my spiders. I found the inside splines worn and was getting the big "clunk" when put into gear. My 4.10 gears were in excellent shape just couldn't find spiders or axles. I did find some used ones but when I found a used 14 bolt locally for cheap..I jumped on it. Completely dismantled the 14 bolt and rebuilt it for a lot less than the parts of an Eaton. Got the larger 13" drums in the rear and now have a 3.73 rear with the option of lower gears if I want. ------------------ Orlando,FL 72 Chevy 4x4 3/4T CustomCamper w/SB 406 __________________ ............................................................ 68 Chevy CST SWB w/LS1, carb & 700r4. Golden Anniversary clone with a few improvements.

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