Axle swap done today - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Chevyguy111786 · 11-26-2003, 09:48 PM

I did an axle swap today. put a 3/4 ton eaton full floater from (i think) a 67 or 68 chevy under a 70 1/2 ton truck. Got a question. The u-joint on the driveshaft is too small for the diff. what can i do? thanks

68c10owner · 11-26-2003, 09:51 PM

you can get a adapter u joint. it has both sizes,one bigger, one smaller. my fried used one when he did pretty much the same swap on his 76 1/2 4x4.

Chevyguy111786 · 11-26-2003, 09:56 PM

any one know where i can pick one of these up?

FRENCHBLUE72 · 11-26-2003, 09:58 PM

GET ONE AT ANY PART'S STORE THEY ARE ABOUT 26 BUCK'S HERE IN OREGON... ANY GOOD PART'S MAN WILL BE ABLE TO HELP YOU OUT..

Chevyguy111786 · 11-27-2003, 03:23 AM

THANKS LOADS! my truck should finally be up and runnin...puttin a flat bed on this weekend...woohoo!!

Chevyguy111786 · 11-28-2003, 06:45 PM

went to napa, they said they didn't have anything like that. i'm out of ideas. will the half ton yoke fit the one ton diff?

fast14 · 11-28-2003, 06:53 PM

It won't fit. I've had this same problem at a lot of parts stores. Sometimes you just need to take the old u-joint in and the yoke if possible and pretty much draw them a picture. Most part stores will have these crossover u-joints but a lot of the people who work there don't want to look for them.

Chevyguy111786 · 11-28-2003, 07:03 PM

i took in the ujoint and all....they said they didn't have it. these guys are real good about spendin time and helpin me out. so i don't know. should i look for a specialty shop somewhere?

fast14 · 11-28-2003, 07:06 PM

Have you tried another parts store?? I have bought u-joints like this at a lot of different stores. It's usually a big pain in the you know what though.

Beast388 · 11-28-2003, 08:20 PM

I purchased my conversion u-joint from Napa. I needed part #348 to connect my 1/2 ton driveshaft to the one ton 1350 size yoke. Napa carries all sorts of conversion u-joints, so I am surprised they said they couldn't help you.

The Eaton and Corporate 14 Bolt full floater are so similiar that I bet #348 would work for you. You can always return it if it doesn't fit.

Chevyguy111786 · 11-29-2003, 12:01 AM

i'll try that in the morning...thanx again for the help

11-26-2003, 09:48 PM	#1
Chevyguy111786 Registered User Join Date: Apr 2003 Location: Garland, Texas Posts: 1,127	Axle swap done today I did an axle swap today. put a 3/4 ton eaton full floater from (i think) a 67 or 68 chevy under a 70 1/2 ton truck. Got a question. The u-joint on the driveshaft is too small for the diff. what can i do? thanks

11-26-2003, 09:51 PM	#2
68c10owner Registered User Join Date: Oct 2003 Location: Carmichael, California Posts: 3,011	you can get a adapter u joint. it has both sizes,one bigger, one smaller. my fried used one when he did pretty much the same swap on his 76 1/2 4x4. __________________ Anthony

11-26-2003, 09:58 PM	#4
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,606	GET ONE AT ANY PART'S STORE THEY ARE ABOUT 26 BUCK'S HERE IN OREGON... ANY GOOD PART'S MAN WILL BE ABLE TO HELP YOU OUT.. __________________ GO BIG GREEN GO DUCKS MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P..

11-28-2003, 06:53 PM	#7
fast14 Registered User Join Date: Nov 2003 Posts: 117	It won't fit. I've had this same problem at a lot of parts stores. Sometimes you just need to take the old u-joint in and the yoke if possible and pretty much draw them a picture. Most part stores will have these crossover u-joints but a lot of the people who work there don't want to look for them. __________________ Just a little crazy 1970 chevy full size half ton, soon to be one ton running gear, 350 turbo, 205 case, 355c.i.

11-28-2003, 07:06 PM	#9
fast14 Registered User Join Date: Nov 2003 Posts: 117	Have you tried another parts store?? I have bought u-joints like this at a lot of different stores. It's usually a big pain in the you know what though. __________________ Just a little crazy 1970 chevy full size half ton, soon to be one ton running gear, 350 turbo, 205 case, 355c.i.

11-26-2003, 09:56 PM	#3
Chevyguy111786 Registered User Join Date: Apr 2003 Location: Garland, Texas Posts: 1,127	any one know where i can pick one of these up?

11-27-2003, 03:23 AM	#5
Chevyguy111786 Registered User Join Date: Apr 2003 Location: Garland, Texas Posts: 1,127	THANKS LOADS! my truck should finally be up and runnin...puttin a flat bed on this weekend...woohoo!!

11-28-2003, 06:45 PM	#6
Chevyguy111786 Registered User Join Date: Apr 2003 Location: Garland, Texas Posts: 1,127	went to napa, they said they didn't have anything like that. i'm out of ideas. will the half ton yoke fit the one ton diff?

11-28-2003, 07:03 PM	#8
Chevyguy111786 Registered User Join Date: Apr 2003 Location: Garland, Texas Posts: 1,127	i took in the ujoint and all....they said they didn't have it. these guys are real good about spendin time and helpin me out. so i don't know. should i look for a specialty shop somewhere?

11-28-2003, 08:20 PM	#10
Beast388 Suburbans RULE! Join Date: Jan 2000 Location: Clinton, IA 52732 Posts: 689	I purchased my conversion u-joint from Napa. I needed part #348 to connect my 1/2 ton driveshaft to the one ton 1350 size yoke. Napa carries all sorts of conversion u-joints, so I am surprised they said they couldn't help you. The Eaton and Corporate 14 Bolt full floater are so similiar that I bet #348 would work for you. You can always return it if it doesn't fit. __________________ --Ben 71 GMC Suburban 4X4 The "Beast" 388 CID Stroker, TH350, NP205, 8-lug D44, 14BFF w/ Detroit, 4.10:1 gears, 4-Wheel Disks 4" Lift, 35" MT/R's.

11-29-2003, 12:01 AM	#11
Chevyguy111786 Registered User Join Date: Apr 2003 Location: Garland, Texas Posts: 1,127	i'll try that in the morning...thanx again for the help



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