Can anyone tell me what my rearend came from? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

61ShortboxDave · 02-24-2017, 12:08 AM

I was able to read the following off the rearend in my 61.

3856525. GM3. HE1 14W

Can anyone tell me what this came from? It doesn't appear to be original to the truck.

Any help is appreciated.

Thanks for your time, Dave

Softpatch · 02-24-2017, 12:14 AM

Pictures would be really helpful in helping you identifie what type.
Should be a tag secured to a bolt on the front pumpkin
usually on the pass side

62stepside longbox · 02-24-2017, 12:29 AM

If it looks like this then it's an eaton ho32, original for a 60-62 1/2 ton truck

**Captainfab** · 02-24-2017, 12:37 AM

he HE was used on both the '61 R10 and '65 C15. You need to determine whether you have a Eaton HO32 diff as shown above or a truck 12 bolt.

http://www.67-72chevytrucks.com/vboa...d.php?t=327764

61ShortboxDave · 02-24-2017, 08:52 AM

Yes, it is a 12 bolt, not the Eaton.

61ShortboxDave · 02-24-2017, 12:53 PM

Here's a couple of pic's.

61ShortboxDave · 02-24-2017, 02:52 PM

I honestly had not hear of a C15 before.

So my 12 bolt is from the 65 C15 Truck?

Are there any rear disc conversion kits out there for these?

Thanks again.

**PGSigns** · 02-24-2017, 08:26 PM

I looks like 64 and up 12bolt for trailing arms. That is going by the track bar mount hole on the top right of the housing. Overall pics may help us till you what may have been to it during the swap into your truck.
Jimmy

**Captainfab** · 02-25-2017, 12:49 AM

Yes. That housing was used from '65-'72. I make 5 different rear disc conversion brackets. Two for the 6 x 5.5" wheel stud pattern and three for the 5 x 5". There are links to the 5 x 5 for sale threads in my signature line. If you are interested in the 6 lug, let me know and I will send you links to those for sale threads. There just is not enough room in the signature area for all of my for sale threads.

Quote:

Originally Posted by 61ShortboxDave

I honestly had not hear of a C15 before.

So my 12 bolt is from the 65 C15 Truck?

Are there any rear disc conversion kits out there for these?

Thanks again.

KenAdams · 02-25-2017, 10:15 AM

Quote:

Originally Posted by 61ShortboxDave

I honestly had not hear of a C15 before.

So my 12 bolt is from the 65 C15 Truck?

Are there any rear disc conversion kits out there for these?

Thanks again.

There are some aftermarket options if you want to spend some $$. I used the Wilwood D154 Kit.

61ShortboxDave · 02-27-2017, 01:50 PM

Thanks very much for all the info !

Dave

KenAdams · 03-01-2017, 04:48 PM

Just finished putting my brakes on that same rear end today, only chose the Wilwood because the kit had a parking break.

02-24-2017, 12:08 AM	#1
61ShortboxDave Registered User Join Date: Apr 2016 Location: cohoes, ny Posts: 24	Can anyone tell me what my rearend came from? I was able to read the following off the rearend in my 61. 3856525. GM3. HE1 14W Can anyone tell me what this came from? It doesn't appear to be original to the truck. Any help is appreciated. Thanks for your time, Dave

02-24-2017, 12:14 AM	#2
Softpatch Registered User Join Date: Sep 2013 Location: Vashon WA Posts: 969	Re: Can anyone tell me what my rearend came from? Pictures would be really helpful in helping you identifie what type. Should be a tag secured to a bolt on the front pumpkin usually on the pass side __________________ My Spelling is Not Incorrect...It's 'Creative' . . 1966 C-20 .....Swap 91 G-30(5.7 FI)/4L80E http://67-72chevytrucks.com/vboard/s...d.php?t=789617 59 Viking Revival .. http://67-72chevytrucks.com/vboard/s...d.php?t=632341

02-24-2017, 12:29 AM	#3
62stepside longbox Registered User Join Date: Aug 2015 Location: Kelowna, B.C, Canada Posts: 1,747	Re: Can anyone tell me what my rearend came from? If it looks like this then it's an eaton ho32, original for a 60-62 1/2 ton truck Attached Images __________________ Nik...................____ 62 lwb c10 step-side 261 5 spd .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ my build thread. Sending unit solution

02-24-2017, 12:37 AM	#4
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: Can anyone tell me what my rearend came from? he HE was used on both the '61 R10 and '65 C15. You need to determine whether you have a Eaton HO32 diff as shown above or a truck 12 bolt. http://www.67-72chevytrucks.com/vboa...d.php?t=327764 __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

02-24-2017, 08:52 AM	#5
61ShortboxDave Registered User Join Date: Apr 2016 Location: cohoes, ny Posts: 24	Re: Can anyone tell me what my rearend came from? Yes, it is a 12 bolt, not the Eaton.

02-24-2017, 12:53 PM	#6
61ShortboxDave Registered User Join Date: Apr 2016 Location: cohoes, ny Posts: 24	Re: Can anyone tell me what my rearend came from? Here's a couple of pic's. Attached Images

02-24-2017, 02:52 PM	#7
61ShortboxDave Registered User Join Date: Apr 2016 Location: cohoes, ny Posts: 24	Re: Can anyone tell me what my rearend came from? I honestly had not hear of a C15 before. So my 12 bolt is from the 65 C15 Truck? Are there any rear disc conversion kits out there for these? Thanks again. Last edited by 61ShortboxDave; 02-24-2017 at 03:16 PM.

02-24-2017, 08:26 PM	#8
PGSigns Senior Member Join Date: Jan 2011 Location: Hayes Va Posts: 4,569	Re: Can anyone tell me what my rearend came from? I looks like 64 and up 12bolt for trailing arms. That is going by the track bar mount hole on the top right of the housing. Overall pics may help us till you what may have been to it during the swap into your truck. Jimmy __________________ 60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic

02-27-2017, 01:50 PM	#11
61ShortboxDave Registered User Join Date: Apr 2016 Location: cohoes, ny Posts: 24	Re: Can anyone tell me what my rearend came from? Thanks very much for all the info ! Dave

03-01-2017, 04:48 PM	#12
KenAdams Registered User Join Date: Feb 2016 Location: Richmond, VA Posts: 176	Re: Can anyone tell me what my rearend came from? Just finished putting my brakes on that same rear end today, only chose the Wilwood because the kit had a parking break. __________________ 1966 Stepside Build Thread (Longbed to Shortbed, LS376/T56, Wilwood Brakes, Ridetech Coilover Kit)

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