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Old November 18th, 2010, 09:19 AM   #1
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Default 14 bolt ff questions

are 14 bolt ff only posi/locker? or are they limited slip or open diff?

i am in the market for a 14 bolt ff and do not want to deal with one wheel wonders

thanks
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Old November 18th, 2010, 09:24 AM   #2
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posi and limited slip is the same. they came with open, gov lock (posi or limited slip whatever you prefer) or the CUCV military version came with a detroit locker and 4:56's
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Old November 18th, 2010, 09:30 AM   #3
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Here's a link to aftermarket lockers and posi's for the 14T

http://completeoffroad.com/c-67267-g...-carriers.html
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Old November 18th, 2010, 04:14 PM   #4
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if i get a 14 bolt ff off a van or 2wd does it have the same wms?
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Old November 18th, 2010, 04:51 PM   #5
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Quote:
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if i get a 14 bolt ff off a van or 2wd does it have the same wms?
I think the width is different in a van than what comes in a truck.
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Old November 18th, 2010, 04:58 PM   #6
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Looks like a van is 70" a SRW out of a truck is 67.5" dully are 72" and cab and chassis are 63.5"

http://www.pirate4x4.com/tech/billav...ble/index.html
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Old November 20th, 2010, 10:24 AM   #7
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okay i got an axle now and im not positive but i read some where that from 73-80 4.10 gears and up have limited slip(gov lock whatever) and 81-up 4.56 gears and up have limited slip? i have a 14b ff 4.10 from January of 76 so what should it have?
also i am swapping this into my 95 k1500 so i know i have to move the spring perches from 42.5" to 46" or 47" what ever it is but when i weld the new ones on should i keep the same pinion angle or change it
last but not least the u-joint, should i get a 1350 series(which is for the 14 b) and just use two caps from my 1310 series(from my 10 bolt) so i can use my stock drive shaft?
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Old November 20th, 2010, 12:06 PM   #8
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anyone know cause im putting it in today
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Old November 20th, 2010, 12:13 PM   #9
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Quote:
Originally Posted by tgk4880 View Post
okay i got an axle now and im not positive but i read some where that from 73-80 4.10 gears and up have limited slip(gov lock whatever) and 81-up 4.56 gears and up have limited slip? i have a 14b ff 4.10 from January of 76 so what should it have?
also i am swapping this into my 95 k1500 so i know i have to move the spring perches from 42.5" to 46" or 47" what ever it is but when i weld the new ones on should i keep the same pinion angle or change it
last but not least the u-joint, should i get a 1350 series(which is for the 14 b) and just use two caps from my 1310 series(from my 10 bolt) so i can use my stock drive shaft?
First, pull the diff cover off and look, a govloc will have a bunch of extra parts inside.

Second, with a non-cv driveshaft match the t-case output angle with the rear diff pinion angle.

Third, they make a conversion u-joint for that application.
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Old November 20th, 2010, 12:15 PM   #10
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You're probably better off using a conversion joint of some sort. I've never dealt with them really but I don't think putting used caps on a new U-joint is a good Idea. Try calling the Auto Zone in Fenton and ask for Jim. He's a u-joint expert. He will probably know what the part number is to the U-joint you will need to make it work.

As far a pinion angle, if you don't have a cv shaft the angle of the joint on the axle and the angle of the joint on the t-case or trans should be the same for best results.
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Old December 10th, 2010, 07:02 PM   #11
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hey guys i gotta question for ya. i got a 78 ford with a dana 44 straight axle up front and a gm 14 in the back both with 410 gears welded. is there any way i can make the rear 8 lug a 5 bolt 5.5 to fit my old rims?
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Old December 11th, 2010, 11:18 AM   #12
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Quote:
Originally Posted by 1985fordman View Post
hey guys i gotta question for ya. i got a 78 ford with a dana 44 straight axle up front and a gm 14 in the back both with 410 gears welded. is there any way i can make the rear 8 lug a 5 bolt 5.5 to fit my old rims?
http://www.solidaxle.com/productcart...&idcategory=11
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