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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

Spider Gears Kit

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Old Jun 6, 2019 | 12:40 PM
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Fleetwood271's Avatar
Fleetwood271
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Spider Gears Kit

I need to replace my spider gears. I have a 1969 F100 with a Ford 9" rear end. It is 28 spline.

Can someone give me a link to Summit or Jegs, or somewhere else that has what I need?

I would also consider going limited slip, but I figure the spider gear kit would be quite a bit less money?
 
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Old Jun 6, 2019 | 01:47 PM
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Spiders:
https://www.summitracing.com/parts/yga-16031


Limited slip diff:
https://www.summitracing.com/parts/m...9f28/overview/
 
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Old Jun 6, 2019 | 05:52 PM
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Thanks for the links.
I found the same spider gear kit on Summit, but wanted someone to confirm I was looking at the right one.

I found this limited slip on Summit:
https://www.summitracing.com/parts/aub-542043
But a guy who rebuilds Ford rear ends often says he does not like this type.
 
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Old Jun 7, 2019 | 07:40 AM
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Used to hear good/bad about Auburns back in the late 80's when the foxbody mustang got real popular. It was a common upgrade guys used. Can't say I have any real work experience with them myself.
I just bought a new Motorsport traction lok for my '95 F150(8.8). They aren't too bad, like $250? Can't recall exactly. I know it wasn't the $400 they are asking for the 9" version.
 
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Old Jun 8, 2019 | 11:38 AM
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Originally Posted by Freightrain
Used to hear good/bad about Auburns back in the late 80's when the foxbody mustang got real popular. It was a common upgrade guys used. Can't say I have any real work experience with them myself.
I just bought a new Motorsport traction lok for my '95 F150(8.8). They aren't too bad, like $250? Can't recall exactly. I know it wasn't the $400 they are asking for the 9" version.
Yeah, he said they are not rebuildable, and if they go bad, you just toss them and buy a new one.
 
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Old Jun 8, 2019 | 11:43 AM
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Looks like I'm going to be converting to a limited slip or Trac-Loc in my rear end. The spider gear kit will be around $200 for parts. I can put in the upgradeed rear end for a little over $500. I've put a 302 Blueprint engine in my truck which should run about 370-390hp. Also installed a TKO 500. So I figure I might as well be sure the rear end is build as well the rest.
 
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