i was thinking about putting an 8.8 in rear end out of a mustang in my car with a spool. what would it cost to have the rear end fitted and welded up to work with my car? are the axle tubes too short or too long?

 

it would not be very cheap, i'd say $500 in housing modification and then $450 in axles. I would just build a 9 inch.

 

I'll have about 500 dollars in my whole 8.8 when I get it finished. The only thing I have left to purchase is the axles. I'm getting Mosier 31 spline units to go with the 31 spline t lock I got with the rear. That price also includes ls1 an ls1 era rear disk set up I scored at my local salvage yard for 80 bucks. The machine work to mount my 3rd gen axle tubes cost me 135 bucks. I am going to be running a custom torque arm modeled after a bolt on mustang unit I saw in a magazine.
I should have it all finished in the next month or so.
Hope this helps.
Kory

 

Moser lists 9 inch axles as costing $450 on their site. So if the 8.8 axles cost $400 that plus your machine work puts you over $500. Plus your other parts.

 

im getting the rear end for free, and the spool for really cheap(i dont know what this means)
the axles, widening/shortening of axle tubes, and attaching all the hardware are the only things i have to pay for.
i know a 9" is stronger, but for my application, an 8.8 would be ideal, in that it wouldn't rob as much power, and is plenty strong

not to mention, im getting a great deal on it. that extra couple hundred dollars for the 9" is more than im wanting to spend.

 

What about the torque arm?

 

you dont know what a spool is? is your car a street car?

 

mosier sells replacement f body axles made from stronger material for under 300 a set. I believe unless I miss read the ad that they are available in all spline counts and widths. I'll check on that .
Kory

 

MOSER! It's MOSER! LOL.

 

moser sells a 9" housing, already modified to fit the 4th gen.
Part# 7H9FBT GM "F" Body Housing WITH Torque Arm Brkt
ive seen it go for $550-600ish.
they can even narrow it to fit wider wheels/tires.

then you can pick up the internal parts from a salvage yard, buy some new axles, and have a badass 9" for under $1k.

if you break the internals, no big deal cause you got them cheap.

 

Exactly. Thats what i suggest you do. I plan on ditching my 8.8 in the summer for a cheap 9 inch setup.

 

i do know what a spool is. when i said "i dont know what this means" i was referring to the price? all i know is it's supposed to be a really good deal.

where would i find info on this moser 9"?
what does a spool for a 9" cost?

 

Could you please be more specific about the parts involved? I'd love to see if I could really do a 9" with 3.73's for under a grand!!

 

Moser offers Axle, housing and TQ arm for $950 on their site. I've heard on LS1tech that you can get the setup cheaper through vendors. One guy said that he got those parts for $900 shipped from a vendor. After that all you need to do is go to a salvage yard and find a 31 spline centersection, with a posi, and gears you can live with and slap it in. The best thing about a Ford setup centersection, is no noise. You can also find used posi centersections with 31 splines on ebay for about 150-250. Thats 900 + 250 and you are good to go.