1969 gmc Question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Razr · 07-25-2009, 06:28 PM

I have a 1969 gmc 3/4ton...and I wanted to convert it from 8lugs to either 5 lug or 6 lug is there a cheap and effiecient way to do this..if so what can be done...

Jacfourteen · 07-25-2009, 06:38 PM

For the front I plan on using ece (early classic enterprises) conversion spindles to convert mine. If you are planning on swapping to disks or lowering this is the best option because you can do all of this in one step. for the back it depends on if you have leaf or trailing arms, if leaf then just find a rear that fits or is the same width and mount new spring perches (great time to do a flip kit if you want it lower), or if is trailing arm just get a 1/2 ton rear and it will bolt right up. Good luck!

Jacfourteen · 07-25-2009, 06:40 PM

forgot to mention that when you swap rears you will prob need a convesion u-joint. they have one pair of caps the size of your driveline and one pair of smaller caps for the 1/2 ton rear.

hugger6933 · 07-25-2009, 08:22 PM

I have a 68 GMC and in a similar circumstance. I also have a 70 1/2 lwb that I am converting to a swb. So the plan for me is to put my 70 on a swb frame [already got the frame rolling with 5lug]. I then will use the 70 lwb frame to change my 3/4 ton with leafs to a 1/2 to with rear coils. I know that don't help you any but thats what I'm doing. I know it sounds like a lot of work but not really. I use a two pst lift to raise the cab and I allready have the lwb bed mounted on the rotissere.I do this sort of thing for a living so, its just more work. Jim

07-25-2009, 06:28 PM	#1
Razr Registered User Join Date: Jan 2008 Location: Hawthorne,CA Posts: 114	1969 gmc Question I have a 1969 gmc 3/4ton...and I wanted to convert it from 8lugs to either 5 lug or 6 lug is there a cheap and effiecient way to do this..if so what can be done...

07-25-2009, 06:38 PM	#2
Jacfourteen Big Red - Now its a SWB! Join Date: Jun 2009 Location: Oroville, Ca Posts: 1,624	Re: 1969 gmc Question For the front I plan on using ece (early classic enterprises) conversion spindles to convert mine. If you are planning on swapping to disks or lowering this is the best option because you can do all of this in one step. for the back it depends on if you have leaf or trailing arms, if leaf then just find a rear that fits or is the same width and mount new spring perches (great time to do a flip kit if you want it lower), or if is trailing arm just get a 1/2 ton rear and it will bolt right up. Good luck! __________________ 68 3/4 ton (Project)-350 Small Block, .030 over, 10:1 comp, 3998993 heads, C3BX edelbrock intake, comp cams XE268, Holley 670 SA, long tube headers, dual flow 40's, E-fan, Alum rad, currently under the knife getting shortened and bagged build thread 41 3/4 ton (wife's)-flatbed, fully restored to original 01 Tahoe LT 4WD (my daily driver)-Magnaflow Muffler, Rollin on 22's 02 Ford Mustang Convertable (Wife's Car)-Flowmaster 50, Clear corners, Intake, sittin on 18's

07-25-2009, 06:40 PM	#3
Jacfourteen Big Red - Now its a SWB! Join Date: Jun 2009 Location: Oroville, Ca Posts: 1,624	Re: 1969 gmc Question forgot to mention that when you swap rears you will prob need a convesion u-joint. they have one pair of caps the size of your driveline and one pair of smaller caps for the 1/2 ton rear. __________________ 68 3/4 ton (Project)-350 Small Block, .030 over, 10:1 comp, 3998993 heads, C3BX edelbrock intake, comp cams XE268, Holley 670 SA, long tube headers, dual flow 40's, E-fan, Alum rad, currently under the knife getting shortened and bagged build thread 41 3/4 ton (wife's)-flatbed, fully restored to original 01 Tahoe LT 4WD (my daily driver)-Magnaflow Muffler, Rollin on 22's 02 Ford Mustang Convertable (Wife's Car)-Flowmaster 50, Clear corners, Intake, sittin on 18's

07-25-2009, 08:22 PM	#4
hugger6933 Registered User Join Date: Oct 2008 Location: Marianna Arkansas Posts: 7,263	Re: 1969 gmc Question I have a 68 GMC and in a similar circumstance. I also have a 70 1/2 lwb that I am converting to a swb. So the plan for me is to put my 70 on a swb frame [already got the frame rolling with 5lug]. I then will use the 70 lwb frame to change my 3/4 ton with leafs to a 1/2 to with rear coils. I know that don't help you any but thats what I'm doing. I know it sounds like a lot of work but not really. I use a two pst lift to raise the cab and I allready have the lwb bed mounted on the rotissere.I do this sort of thing for a living so, its just more work. Jim



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