8 lug conversion - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Aussie_C2o · 10-11-2007, 03:15 AM

Hi all, I have a 72 longbed and want to change my stud pattern to 6 lug from 8 lug. I have bought new drop axles for the front that will run C10 rotors. For the rear I am unsure of which way to go. I think I have a Dana 60 FF. I think it will be best for me to identify this first. I was thinking of either getting 2 axles made or change the hubs to 6 lug hubs. Has anyone done this before. Any help please.
Glenn
www.compheads.com.au

67_C-30 · 10-11-2007, 08:56 AM

Quote:

Originally Posted by Aussie_C2o

Hi all, I have a 72 longbed and want to change my stud pattern to 6 lug from 8 lug. I have bought new drop axles for the front that will run C10 rotors. For the rear I am unsure of which way to go. I think I have a Dana 60 FF. I think it will be best for me to identify this first. I was thinking of either getting 2 axles made or change the hubs to 6 lug hubs. Has anyone done this before. Any help please.
Glenn
www.compheads.com.au

Unless the rearend has been cahnged in your truck, its probably an Eaton rearend. In a FF rear the lugs are in the brake drums, not in the axles. It's likely that the hub diamter will be too big to redrill the drums. Changing over to a 6 lug would be the best choice, and would allow a better selection of gear ratios.

earl87gta · 10-11-2007, 04:43 PM

some of the 72 had d60 in the back . But you wold be better off getting a 12b 6 lug rear or a 14blt 6 lug but there hard to find here let alone in Australia so the 12blt is your best bet.. I was in your kneck of the wood one time spent 3 month in Amberly i think that what the tome was called on an air base there.or it was when I was at a navy base but im not sure. on the weekend I would take a train to Brisbane or Sidney even went to serfers pairedice once.

Aussie_C2o · 10-11-2007, 05:31 PM

I will take some pics of this diff as it is out of the truck atm and I have a 9" in it. I am not sure where Amberly is, but surfers paradise is very nice. thanks for the replys

earl87gta · 10-11-2007, 06:09 PM

First pic is a eaton second a 14blt and third is a d60 if your lucky ita a d60 there is a kit to convert it to 6 lug http://www.geartechhd.com/gallery/di...?album=5&pos=6

Aussie_C2o · 10-12-2007, 01:58 AM

Mine is definetly the D60. I will check out that site. thanks guys

earl87gta · 10-12-2007, 07:45 AM

Glad I could help. If you get that convertion kit take lots of pics Ive never seen one used before. It looks like its a high quality kit.

Aussie_C2o · 10-12-2007, 09:48 AM

Do you know how much the kit costs? I have emailed them and I'm waiting on cost.

earl87gta · 10-12-2007, 04:52 PM

No I dont there was a write up on it in one of the 4x4 mags one time but I canrt remeber were. Ill see if I can find it.

earl87gta · 10-12-2007, 05:45 PM

I called them and left a mesage if they call me back Ill let you know.

Aussie_C2o · 10-12-2007, 09:20 PM

thanks

earl87gta · 10-15-2007, 12:52 PM

dont know if you got a hold of them but they called me back today. it is $1450 for the kit but it comes with a disk break convertion you have to use disks with it. He said he would ship it to to you no problem.

Aussie_C2o · 10-15-2007, 03:55 PM

Thats not too bad considering what you get. Thanks for your help.

earl87gta · 10-15-2007, 04:15 PM

Glad I could help.
That’s what I was thinking all new hubs and every thing for disk breaks. Let me know if you decide to buy the kit and need me to call him for you or any thing.

Aussie_C2o · 10-15-2007, 04:45 PM

Thanks earl, i just got a truck 9 inch and not sure if ill use it. its already 5x5 and 31 spline axles. I'll be saving the 1450, and id prob spend that on a good locker center. what do you think? I also want to bag this thing so the extra cash helps too.

earl87gta · 10-15-2007, 07:12 PM

I would think for 1450 you could build that 9 up. you could upgrade the axles and put a locker in it and have cash left over.

10-11-2007, 03:15 AM	#1
Aussie_C2o Registered User Join Date: Oct 2007 Location: Melbourne, Australia Posts: 41	8 lug conversion Hi all, I have a 72 longbed and want to change my stud pattern to 6 lug from 8 lug. I have bought new drop axles for the front that will run C10 rotors. For the rear I am unsure of which way to go. I think I have a Dana 60 FF. I think it will be best for me to identify this first. I was thinking of either getting 2 axles made or change the hubs to 6 lug hubs. Has anyone done this before. Any help please. Glenn www.compheads.com.au

10-11-2007, 04:43 PM	#3
earl87gta Senior Member Join Date: Dec 2003 Location: Kingsport TN Posts: 4,641	Re: 8 lug conversion some of the 72 had d60 in the back . But you wold be better off getting a 12b 6 lug rear or a 14blt 6 lug but there hard to find here let alone in Australia so the 12blt is your best bet.. I was in your kneck of the wood one time spent 3 month in Amberly i think that what the tome was called on an air base there.or it was when I was at a navy base but im not sure. on the weekend I would take a train to Brisbane or Sidney even went to serfers pairedice once. __________________ Earl 68 2500 4x4 GMC Burb Last edited by earl87gta; 10-11-2007 at 04:51 PM.

10-11-2007, 05:31 PM	#4
Aussie_C2o Registered User Join Date: Oct 2007 Location: Melbourne, Australia Posts: 41	Re: 8 lug conversion I will take some pics of this diff as it is out of the truck atm and I have a 9" in it. I am not sure where Amberly is, but surfers paradise is very nice. thanks for the replys __________________ www.compheads.com.au FATGM 1972 C20- 500HP 402BBC, Dropped on 20" Billets

10-11-2007, 06:09 PM	#5
earl87gta Senior Member Join Date: Dec 2003 Location: Kingsport TN Posts: 4,641	Re: 8 lug conversion First pic is a eaton second a 14blt and third is a d60 if your lucky ita a d60 there is a kit to convert it to 6 lug http://www.geartechhd.com/gallery/di...?album=5&pos=6 Attached Images __________________ Earl 68 2500 4x4 GMC Burb

10-12-2007, 01:58 AM	#6
Aussie_C2o Registered User Join Date: Oct 2007 Location: Melbourne, Australia Posts: 41	Re: 8 lug conversion Mine is definetly the D60. I will check out that site. thanks guys __________________ www.compheads.com.au FATGM 1972 C20- 500HP 402BBC, Dropped on 20" Billets

10-12-2007, 07:45 AM	#7
earl87gta Senior Member Join Date: Dec 2003 Location: Kingsport TN Posts: 4,641	Re: 8 lug conversion Glad I could help. If you get that convertion kit take lots of pics Ive never seen one used before. It looks like its a high quality kit. __________________ Earl 68 2500 4x4 GMC Burb

10-12-2007, 09:48 AM	#8
Aussie_C2o Registered User Join Date: Oct 2007 Location: Melbourne, Australia Posts: 41	Re: 8 lug conversion Do you know how much the kit costs? I have emailed them and I'm waiting on cost. __________________ www.compheads.com.au FATGM 1972 C20- 500HP 402BBC, Dropped on 20" Billets

10-12-2007, 04:52 PM	#9
earl87gta Senior Member Join Date: Dec 2003 Location: Kingsport TN Posts: 4,641	Re: 8 lug conversion No I dont there was a write up on it in one of the 4x4 mags one time but I canrt remeber were. Ill see if I can find it. __________________ Earl 68 2500 4x4 GMC Burb

10-12-2007, 05:45 PM	#10
earl87gta Senior Member Join Date: Dec 2003 Location: Kingsport TN Posts: 4,641	Re: 8 lug conversion I called them and left a mesage if they call me back Ill let you know. __________________ Earl 68 2500 4x4 GMC Burb

10-12-2007, 09:20 PM	#11
Aussie_C2o Registered User Join Date: Oct 2007 Location: Melbourne, Australia Posts: 41	Re: 8 lug conversion thanks __________________ www.compheads.com.au FATGM 1972 C20- 500HP 402BBC, Dropped on 20" Billets

10-15-2007, 12:52 PM	#12
earl87gta Senior Member Join Date: Dec 2003 Location: Kingsport TN Posts: 4,641	Re: 8 lug conversion dont know if you got a hold of them but they called me back today. it is $1450 for the kit but it comes with a disk break convertion you have to use disks with it. He said he would ship it to to you no problem. __________________ Earl 68 2500 4x4 GMC Burb

10-15-2007, 03:55 PM	#13
Aussie_C2o Registered User Join Date: Oct 2007 Location: Melbourne, Australia Posts: 41	Re: 8 lug conversion Thats not too bad considering what you get. Thanks for your help. __________________ www.compheads.com.au FATGM 1972 C20- 500HP 402BBC, Dropped on 20" Billets

10-15-2007, 04:15 PM	#14
earl87gta Senior Member Join Date: Dec 2003 Location: Kingsport TN Posts: 4,641	Re: 8 lug conversion Glad I could help. That’s what I was thinking all new hubs and every thing for disk breaks. Let me know if you decide to buy the kit and need me to call him for you or any thing. __________________ Earl 68 2500 4x4 GMC Burb

10-15-2007, 04:45 PM	#15
Aussie_C2o Registered User Join Date: Oct 2007 Location: Melbourne, Australia Posts: 41	Re: 8 lug conversion Thanks earl, i just got a truck 9 inch and not sure if ill use it. its already 5x5 and 31 spline axles. I'll be saving the 1450, and id prob spend that on a good locker center. what do you think? I also want to bag this thing so the extra cash helps too. __________________ www.compheads.com.au FATGM 1972 C20- 500HP 402BBC, Dropped on 20" Billets

10-15-2007, 07:12 PM	#16
earl87gta Senior Member Join Date: Dec 2003 Location: Kingsport TN Posts: 4,641	Re: 8 lug conversion I would think for 1450 you could build that 9 up. you could upgrade the axles and put a locker in it and have cash left over. __________________ Earl 68 2500 4x4 GMC Burb



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