Need help installing 4:30 gear on a 98 cobra

tmoneyballin

New Member
Aug 16, 2006
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Suwanee, GA
I'll be totally honest, I am not a "gear head" I had 3 of my buddies over to replace the 410 gears with 430's. My friend, who seems to know the most about installing gears admits he "should have" paid a little more attention to the setup when he removed it - meaning we are having trouble putting it back together.

Couple questions:
First off do you guys have any website links to install details/diagrams/pictures ... the mustang book is not too helpful if you know what I mean...

Is the 410 pinion gear resuable with the 430( we have the new pinion with the 430 but my buddies insist it's the same and we can reuse the original for convenience) and not mess with the new one?

When all the gears are put together with the S clamp(which we still aren't sure we are installing correctly because it seems like a B*%*& to get in and locks up gears when it does) are there any gears that aren't supposed to spin( I am talking we are not installing the assembly inside the pumpkin yet so if we inserted an axle and tried to rotate it - should the gear assembly rotate? or is it supposed to be locked?

Any other advice for how the S clamp is supposed to be installed(what gears need to be already in position, like the pinion shaft(which seems to hold the gears in place(alligned) before you put the S clamp in, but it doesn't appear you can install the S clamp after you slide the pinon shaft through the setup...)
We have heard conflicting advice in regard to which gears are supposed to spin and which are not....

Any other pointers or direction will be VERY helpful, my buddies are planning on riding out to a shop or two and getting some better direction, but I figured I would try and help them with homework...it's very hard to find a quality, detailed description of this specific rear end install....

THANKS! Please contribute what you can it will be GREATLY appreciated.:hail2:
 
I was going to change my gears to a 4.10, but from what I have read, dont F with it. Pay someone. I had the tools and most of the know all for this type of intstall, but it is very very easy to screw this up. If it is slightly off, you will have to tear it apart and re-do. I had an AWESOME article with pictures and everything, but cant find it. I will look now and get back to you.