3/4 ton to 1/2 ton. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

zac redding · 01-09-2009, 03:38 PM

hello everyone, im new, i have a couple questions, what would be a good axle swap thats 5 lug for my 71 lwb? will they bolt right up? i was thinkin maybe from a 80's model truck? is that one good? thanks for your help.

zac redding · 01-09-2009, 05:14 PM

anyone?

thirdstreettito · 01-09-2009, 05:21 PM

Bump for ya

Longhorn Man · 01-09-2009, 05:34 PM

Do you have coils or leaf spring rear suspention?

zac redding · 01-09-2009, 06:06 PM

Quote:

Originally Posted by Longhorn Man

Do you have coils or leaf spring rear suspention?

i forgot to look wen i went to look at the truck... wats the difference in mods?
leaf vs coils?

**leddzepp** · 01-09-2009, 06:02 PM

I am going to follow this thread, as I am looking at changing a 3/4 ton to a half ton set-up...

Longhorn Man · 01-09-2009, 06:24 PM

if you have coil, then a 71/72 1/2 ton 12 bolt will swap right in.
If you have leaf springs, then you need to locate a rear with the same spring pad width, or start cutting and welding

zac redding · 01-09-2009, 06:26 PM

Quote:

Originally Posted by Longhorn Man

if you have coil, then a 71/72 1/2 ton 12 bolt will swap right in.
If you have leaf springs, then you need to locate a rear with the same spring pad width, or start cutting and welding

ok, that helps, im prayin it has coils... i dont have a welder or cuttin tool, or even access to one.

**leddzepp** · 01-09-2009, 06:28 PM

I thought all the 3/4 tons had leafs....guess some have coils too.

LONGHAIR · 01-09-2009, 07:11 PM

Quote:

Originally Posted by leddzepp

I thought all the 3/4 tons had leafs....guess some have coils too.

The rear suspension was an optional thing in the 67-72 trucks. You could have either leaf or coil.
IIRC, coil was standard and leaf was the option on Chevys and the opposite was standard on GMC, with coils being the option.
Once you hit the 73-87 generation, the coils are gone, leaf on everything.

Bus Ted Knuckle · 01-09-2009, 11:26 PM

I wish all of you guys would give your 3/4 stuff to me, I want to go from half ton to 3/4!

61superman · 01-10-2009, 12:45 AM

i converted my 72 burb from 3/4 to 1/2 ton, all I did was get a 72 1/2 ton rear end to make it 5 lug then for the front rotors i went with the early classic (ECE) c20 to c10 dropped conversion spindle its made to take all the c20 ball joints etc. but allowing you to use a 5 lug rotors in front.

Gray Ghost · 01-10-2009, 01:47 AM

Never have been a fan of the 3/4 ton rear axle....you have to remove both axles to do the brakes unless you have swapped over to discs. When you don't have the tools and know how, that can get expensive!!

Sinister · 01-10-2009, 10:45 AM

Quote:

Originally Posted by Gray Ghost

Never have been a fan of the 3/4 ton rear axle....you have to remove both axles to do the brakes unless you have swapped over to discs. When you don't have the tools and know how, that can get expensive!!

I had a Dana 60 in my '72 -20, don't have to pull the axles on that.

Gray Ghost · 01-10-2009, 11:04 AM

Guess I shoulda said 14 bolt. Never had a Dana.

thirdstreettito · 01-10-2009, 02:16 AM

Quote:

Originally Posted by Bus Ted Knuckle

I wish all of you guys would give your 3/4 stuff to me, I want to go from half ton to 3/4!

I want to do it with my 72, I was thinking of just buying 3/4t springs though. But I'd rather have all of the parts.

C20-67_N_MO · 01-11-2009, 04:24 PM

Quote:

Originally Posted by Bus Ted Knuckle

I wish all of you guys would give your 3/4 stuff to me, I want to go from half ton to 3/4!

Well I am swapping out my 8 lug axle for a '70 5 lug axle so if you want the pumpkin come up here to Missouri and take it off my hands!

zac redding · 01-10-2009, 02:06 AM

my dad has been a mechanic for almost 30 yrs, im sure it wont be that hard for him... will i need to change drive shafts? or just axle, coils, front suspenion, 5 lug conversion, wheels???

Longhorn Man · 01-10-2009, 07:20 AM

yes, the drive shaft needs replaced or midified.... or a converson U-joint.

zac redding · 01-10-2009, 03:19 PM

edited by mod, again

zac redding · 01-10-2009, 04:23 PM

edited by mod

Sir Fisher · 01-10-2009, 04:58 PM

i guess you're doing a 2wd?? i'm converting a 70 4x4 and i'm using axles from a 72; dana 44 and 12 bolt rear. 6 lug axles. good luck to you.

61superman · 01-10-2009, 06:14 PM

all u need is a conversion u-joint that converts a c20 to c10. i bought mine at napa. i used my stock c20 driveshaft

kookykrispy · 01-10-2009, 06:46 PM

Not to be a smartass, but I'm just wondering why you want to get rid of your 3/4 ton equipment? Is it so you can run 5 lug rims??

zac redding · 01-10-2009, 11:30 PM

haha no, i wanna make it a 1/2 ton and 5 lug. 5 lug has a better range of wheels, and 1/2 has a better variety of lowering parts... in my opinion.

01-09-2009, 03:38 PM	#1
zac redding Registered User Join Date: Jan 2009 Location: midwest city oklahoma Posts: 39	3/4 ton to 1/2 ton. hello everyone, im new, i have a couple questions, what would be a good axle swap thats 5 lug for my 71 lwb? will they bolt right up? i was thinkin maybe from a 80's model truck? is that one good? thanks for your help. Last edited by zac redding; 01-09-2009 at 03:39 PM.

01-09-2009, 05:14 PM	#2
zac redding Registered User Join Date: Jan 2009 Location: midwest city oklahoma Posts: 39	Re: 3/4 ton to 1/2 ton. anyone?

01-09-2009, 05:21 PM	#3
thirdstreettito Resident of Here Join Date: May 2008 Location: Wesley Chapel, FL, USA Posts: 7,716	Re: 3/4 ton to 1/2 ton. Bump for ya __________________ ~Bradley~ 2004 Black GTO LS2/T56 too much to list Miss having a truck

01-09-2009, 05:34 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: 3/4 ton to 1/2 ton. Do you have coils or leaf spring rear suspention?

01-09-2009, 06:02 PM	#6
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,023	Re: 3/4 ton to 1/2 ton. I am going to follow this thread, as I am looking at changing a 3/4 ton to a half ton set-up...

01-09-2009, 06:24 PM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: 3/4 ton to 1/2 ton. if you have coil, then a 71/72 1/2 ton 12 bolt will swap right in. If you have leaf springs, then you need to locate a rear with the same spring pad width, or start cutting and welding

01-09-2009, 06:28 PM	#9
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,023	Re: 3/4 ton to 1/2 ton. I thought all the 3/4 tons had leafs....guess some have coils too.

01-09-2009, 11:26 PM	#11
Bus Ted Knuckle Son of a gun Join Date: Jan 2007 Location: Hot Springs, Arkansas Posts: 1,636	Re: 3/4 ton to 1/2 ton. I wish all of you guys would give your 3/4 stuff to me, I want to go from half ton to 3/4! __________________ Bill BEATERS ARE NEATER

01-10-2009, 12:45 AM	#12
61superman Registered User Join Date: Dec 2006 Location: sl,ut Posts: 145	Re: 3/4 ton to 1/2 ton. i converted my 72 burb from 3/4 to 1/2 ton, all I did was get a 72 1/2 ton rear end to make it 5 lug then for the front rotors i went with the early classic (ECE) c20 to c10 dropped conversion spindle its made to take all the c20 ball joints etc. but allowing you to use a 5 lug rotors in front. __________________ current project: 1964 chevy II Wagon 1956 3100 1972 c10 burb bagged 1962 GMC burb 1963 c10 burb 1966 c10 burb 1995 chevy lowerado 5/7 static drop daily driver 1963 c10 step side 1965 super sport impala 1967 c30

01-10-2009, 01:47 AM	#13
Gray Ghost Senior Member Join Date: Sep 2004 Location: Terrell, TX Posts: 1,967	Re: 3/4 ton to 1/2 ton. Never have been a fan of the 3/4 ton rear axle....you have to remove both axles to do the brakes unless you have swapped over to discs. When you don't have the tools and know how, that can get expensive!! __________________ Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps.

01-10-2009, 11:04 AM	#15
Gray Ghost Senior Member Join Date: Sep 2004 Location: Terrell, TX Posts: 1,967	Re: 3/4 ton to 1/2 ton. Guess I shoulda said 14 bolt. Never had a Dana. __________________ Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps.

01-10-2009, 02:06 AM	#18
zac redding Registered User Join Date: Jan 2009 Location: midwest city oklahoma Posts: 39	Re: 3/4 ton to 1/2 ton. my dad has been a mechanic for almost 30 yrs, im sure it wont be that hard for him... will i need to change drive shafts? or just axle, coils, front suspenion, 5 lug conversion, wheels???

01-10-2009, 07:20 AM	#19
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: 3/4 ton to 1/2 ton. yes, the drive shaft needs replaced or midified.... or a converson U-joint.

01-10-2009, 03:19 PM	#20
zac redding Registered User Join Date: Jan 2009 Location: midwest city oklahoma Posts: 39	Re: 3/4 ton to 1/2 ton. edited by mod, again Last edited by Richard8971; 01-11-2009 at 08:37 PM. Reason: Edited, again.

01-10-2009, 04:23 PM	#21
zac redding Registered User Join Date: Jan 2009 Location: midwest city oklahoma Posts: 39	Re: 3/4 ton to 1/2 ton. edited by mod Last edited by Richard8971; 01-11-2009 at 08:36 PM.



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01-10-2009, 04:58 PM	#22
Sir Fisher Registered User Join Date: Sep 2007 Location: West Coast FL Posts: 204	Re: 3/4 ton to 1/2 ton. i guess you're doing a 2wd?? i'm converting a 70 4x4 and i'm using axles from a 72; dana 44 and 12 bolt rear. 6 lug axles. good luck to you. __________________ 1970 Chevy K20 Custom Camper 1996 Chevy Impala SS 2008 Chevy Avalanche LT3 2003 Honda Accord EX 2001 Hewes Redfisher 16 Fighting Lady Yellow Build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=324118

01-10-2009, 06:14 PM	#23
61superman Registered User Join Date: Dec 2006 Location: sl,ut Posts: 145	Re: 3/4 ton to 1/2 ton. all u need is a conversion u-joint that converts a c20 to c10. i bought mine at napa. i used my stock c20 driveshaft __________________ current project: 1964 chevy II Wagon 1956 3100 1972 c10 burb bagged 1962 GMC burb 1963 c10 burb 1966 c10 burb 1995 chevy lowerado 5/7 static drop daily driver 1963 c10 step side 1965 super sport impala 1967 c30

01-10-2009, 06:46 PM	#24
kookykrispy The Early Chevy Van Man Join Date: Dec 2008 Location: Seattle, WA Posts: 76	Re: 3/4 ton to 1/2 ton. Not to be a smartass, but I'm just wondering why you want to get rid of your 3/4 ton equipment? Is it so you can run 5 lug rims?? __________________ 64 Chevy Van 65 GMC Handi-Van 99 2500 silverado 4x4 ext cab

01-10-2009, 11:30 PM	#25
zac redding Registered User Join Date: Jan 2009 Location: midwest city oklahoma Posts: 39	Re: 3/4 ton to 1/2 ton. haha no, i wanna make it a 1/2 ton and 5 lug. 5 lug has a better range of wheels, and 1/2 has a better variety of lowering parts... in my opinion.

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