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need a 3.08 diff but where is one?

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Old Dec 19, 2005 | 10:34 AM
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Talking need a 3.08 diff but where is one?

Hi guys,
I am in need of a 3.08 diff for my 62 unibody. its a 292 with a cruiseomatic tranny in it. i have looked and looked with no results. ANY one know of one? i gotta gotta gotta have one. I am north of atlanta. any body know of one or one that will work in it please let me know. Thanks a million!
 
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Old Dec 19, 2005 | 01:39 PM
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All I can offer is that that was a common ratio for the big cars mid sixties to late seventies. Pretty much any big four door with an automatic from that era had close to a 3.00:1 ratio. Good luck, Rich.
 
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Old Dec 19, 2005 | 01:40 PM
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Randy's Ring and Pinion usualy has everything. (www(.)ring-pinion(.)com) What axle is this for?
 
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Old Dec 19, 2005 | 03:54 PM
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I had a absolutely horrible experience with randys a few yrs ago regarding rare rear end pieces.....be very cautious...Drop me a note if you wanna for the scoop


cs65
 
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Old Dec 19, 2005 | 06:04 PM
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3.00 third members are plentiful in the yards. average about 30 to 50 depending on the yard. you will need a 28 spline unit. Easy swap

Dont get into chaning ring and pinions on nine inchers unless you have the expertise and tools to set it up.
 
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Old Dec 19, 2005 | 07:21 PM
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Hi Guys!
Thanks for the info. I guess this is a 9, i really dont know. i checked the plate on it and it says what is currently in it is a 3.70. i dont know if this helps or not. i can take things apart, replace things, but tell you what it is i fall short on. i am a newbie at this still. sorry.
so what car should i be looking for to get what i need? cause there are no trucks that i have found. i have been trying to go through the listing services and calling yards but nothing. i want to do what garbz2 said just do a simple swap.
Thanks fellas!
 
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Old Dec 19, 2005 | 09:17 PM
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I got my pumkin from a older LTD with a 400. It had 3.00 gears and worked great for getting my mileage up.

jd
 
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Old Dec 20, 2005 | 04:01 AM
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Originally Posted by Unibody62F100
Hi Guys!
Thanks for the info. I guess this is a 9, i really dont know. i checked the plate on it and it says what is currently in it is a 3.70. i dont know if this helps or not. i can take things apart, replace things, but tell you what it is i fall short on. i am a newbie at this still. sorry.
so what car should i be looking for to get what i need? cause there are no trucks that i have found. i have been trying to go through the listing services and calling yards but nothing. i want to do what garbz2 said just do a simple swap.
Thanks fellas!
Look at 60s era pickups with 352s and automatics. That would be a starting point. Expect to find 3.00 rather than 3.08, but if ya aint racing it shouldn't matter than much anyways.

John
 
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Old Dec 20, 2005 | 04:14 AM
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3.00 is common in 73-79 trucks
 
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Old Dec 20, 2005 | 04:24 AM
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Thats right, but they will have 31 spline axles. He needs a 28 spline chunk.

John
 
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Old Dec 20, 2005 | 04:26 AM
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31 spline is used in the f150 the f100 had 28 , then there were also plenty of f150 regular cabs made with 28 spline units , 4x4 f100's had 31 splines.
 
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Old Dec 20, 2005 | 04:28 AM
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also it really does not matter which unit he finds if he finds a good 31 spline unit with a 3.00 he can just swap over his spider gears and make it a 28 spline unit.
 
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Old Dec 20, 2005 | 04:32 AM
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Originally Posted by ford390gashog
also it really does not matter which unit he finds if he finds a good 31 spline unit with a 3.00 he can just swap over his spider gears and make it a 28 spline unit.
gashog, Somehow I speck he aint into playing with spiders.

John
 
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Old Dec 20, 2005 | 06:45 AM
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what spline would a 66 f100 be? i have what i was told to be a 3.02 gear out of a 66. the whole rearend. it had a 300/6 with a 3 speed.
 
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Old Dec 20, 2005 | 08:32 AM
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You guys are great and totally amazing. i didnt know these things and now i can look for this chunk so much easier. I will let you know what i find. Thanks a million as always.

Unibody62F100
 
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