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-   -   8 lug to 6 lug 64 GMC, also V6 to V8 swap (http://67-72chevytrucks.com/vboard/showthread.php?t=742515)

64GMCpickup 07-16-2017 08:52 PM

8 lug to 6 lug 64 GMC, also V6 to V8 swap
 
I have a 64 GMC with 8 lugs and want to convert the front drums to disc.
I am installing a 6 lug Posi rear end (I already have it).
So, I need to install matching 6 lug discs in the front. Can I obtain parts from a newer model for a bolt on conversion? I would like to keep it as a 3/4 ton truck.
On another topic, are there bolt on mounts available for swapping the 305 V6 to a 350 V8? I would like to install the V8 and 700 R4 (I already have them).
Any thoughts you guys may have on this would be gratefully appreciated.
Thanks,
Steve

ImpalaJim 07-16-2017 10:49 PM

Re: 8 lug to 6 lug 64 GMC, also V6 to V8 swap
 
well 6 lug is not 3/4

DPowers 07-16-2017 10:57 PM

Re: 8 lug to 6 lug 64 GMC, also V6 to V8 swap
 
Welcome to the site.
FAQ section should give you all the info you need.
http://67-72chevytrucks.com/vboard/s...d.php?t=646002

64GMCpickup 07-18-2017 05:37 AM

Re: 8 lug to 6 lug 64 GMC, also V6 to V8 swap
 
I am trying to match the 6 lug axels on the posi rear end. I would guess it would be rated as a heavy half ton ??????

Captainfab 07-18-2017 11:53 PM

Re: 8 lug to 6 lug 64 GMC, also V6 to V8 swap
 
All GM 1/2 tons from '55-'70 were 6 lug. There was no such thing as a heavy 1/2 ton back then.

To change a '60-'66 3/4 ton to a 1/2 ton, you will have to change the entire front suspension including the crossmember from a '71-'86 C10 or a '87-'91 R1500. Then you will need the aftermarket 6 lug rotors.


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