converting to 14FF - The 1947 - Present Chevrolet & GMC Truck Message Board Network

89blacksub · 04-07-2005, 08:02 PM

i may be getting a deal on a 14bFF and was just wondering what i would have to change other than the spring perches (seller will be putting them where i need them). any help would be greatly appreciated, i want to know what i am getting into before i buy it. thanks.

MAC67 · 04-07-2005, 11:23 PM

besides perches if you are putting it under a half ton you will probably need a conversion joint , if it is the outside clip style the precision u joint part number you will need is 348 , besides that youll need bigger ubolts , i use 5/8x 3 3/8" X however long you need them

*1FaastC10* · 04-07-2005, 11:55 PM

get a 3/4 ton FF, and you wont need to move the perches at all.

89blacksub · 04-08-2005, 12:00 AM

actually i think that it is a 3/4. on another board i visit a guy was asking for a 3/4 14 and someone said that they had two, so i am trying to get one since it is local. im not worried about the perches. just the ujoint and the ubolts and anything else that may need to be changed. thanks for the responses...is there anything else.

oh yeah, about how much am i looking at for a conversion joint. and is this something i can do without a shop and air tools???

04-07-2005, 08:02 PM	#1
89blacksub army slave Join Date: Feb 2005 Location: FT Hood, Texas Posts: 89	converting to 14FF i may be getting a deal on a 14bFF and was just wondering what i would have to change other than the spring perches (seller will be putting them where i need them). any help would be greatly appreciated, i want to know what i am getting into before i buy it. thanks. __________________ 1989 suburban 1500 4X4 silverado all stock...for now. plans; 6 inch susp lift 36" tires on 15" rims new all black paint custom bumbers misc engine mods until it goes, then drop in 454 nerf step bars billet grill ...

04-08-2005, 12:00 AM	#4
89blacksub army slave Join Date: Feb 2005 Location: FT Hood, Texas Posts: 89	actually i think that it is a 3/4. on another board i visit a guy was asking for a 3/4 14 and someone said that they had two, so i am trying to get one since it is local. im not worried about the perches. just the ujoint and the ubolts and anything else that may need to be changed. thanks for the responses...is there anything else. oh yeah, about how much am i looking at for a conversion joint. and is this something i can do without a shop and air tools??? __________________ 1989 suburban 1500 4X4 silverado all stock...for now. plans; 6 inch susp lift 36" tires on 15" rims new all black paint custom bumbers misc engine mods until it goes, then drop in 454 nerf step bars billet grill ...

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04-07-2005, 11:23 PM	#2
MAC67 " SHOW ME" Join Date: Jan 2003 Location: shelbyville illinois Posts: 2,624	besides perches if you are putting it under a half ton you will probably need a conversion joint , if it is the outside clip style the precision u joint part number you will need is 348 , besides that youll need bigger ubolts , i use 5/8x 3 3/8" X however long you need them

04-07-2005, 11:55 PM	#3
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,399	get a 3/4 ton FF, and you wont need to move the perches at all.



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