I have roughly 450 into the 8.8 in my car. They have pushed Gbody stuff well into the 9 second range with stock internals. Way cheaper than the options from big companies.
Ford rear end
- Thread starter airboatgreg
- Start date
- Status
Understood, but you're running Mustang wheels. I know that's not what I want; how much more is it to change axles, etc. to make GM wheels fit? How did you do the driveshaft; is that in the 450?
It would be nice if someone did a how-to, and it was made a stickie...
Quite honestly your 7.5 will handle that power especially if your not drag racing or running slicks. I ran my 7.5 (auburn posi) for three years @ at the track w/ slicks @ 12.3 (350 RWHP) with no problems. You might want to chat with 565, he had one behind his beast for a while.
You don't have to crazy spending money on a nine inch. I bought an axle - housing package from moser, it was $600 years ago but I think they are still just over $700, and ordered it with gm ends to accept my brakes and of course the axles drilled for GM wheels. You can find, build, or buy a third member pretty cheap.
Moser will make them with 5x4.75 if you were wanting new axles. The cheap way is to drill a Chevy pattern opposite the existing one.
My car runs a 4l80e so had to have a custom driveshaft made. Changing to a 9" or S60 will result in the same issues so I don't think there's a way around that part.
My car runs a 4l80e so had to have a custom driveshaft made. Changing to a 9" or S60 will result in the same issues so I don't think there's a way around that part.
Like I said earlier I am out of my range of expertise. I have replaced a lot of bearings in rear ends, setting pre-loads and such. I want a nice posi/limited slip *ss end that is fun to drive. With an El C there is no weight on rear end and I have had my hot rods. I am not familiar with the auburn posi and will look into. I have BFG 60 series tires.
Thanks for input
I
I had my Moser axle shafts drilled for 5x4-3/4 and 5x4-1/2. The Wilwood spindles in the UMI C5/C6 brake kit also has a duel pattern drilled. Gonna make rim shopping a million times easier. A nice feature of a custom axle.
I had my Moser axle shafts drilled for 5x4-3/4 and 5x4-1/2. The Wilwood spindles in the UMI C5/C6 brake kit also has a duel pattern drilled. Gonna make rim shopping a million times easier. A nice feature of a custom axle.
When I swap to a ford 9 inch in my Malibu I probably spent 1500 or less due to buying used ls1 rear disc brake setup from a salvage yard. Then new Moser 31 spline axles and nascar take out third member with all billet parts.then the housing was fab up with from a local guy that builds rear ends. if your making less than 500 horsepower I would just use the 7.5 rear end and be fine then put the extra money you saved to the rest of the car.
I used to think that, too. When I was searching for an 8.8 axle to swap into my GP, I specifically wanted one with a 3.08 ratio for that same reason. With my 26.1" tires and the (admittedly shallow) .75 overdrive in my 4L80E, I thought it would be ideal to rev at 2080 rpm while cruising at 70 MPH. But when I actually started driving the car--at that speed on the highway and also around town--I soon decided that perhaps I could go a bit shorter with my axle ratio and be even happier.
Later, I did an upgrade "package" and installed new Strange axles plus c-clip eliminators and a TrueTrac differential. While it was apart, I found a local guy selling a take-out 3.55 ring & pinion set for dirt cheap, so I threw that in at the same time. Wow, what a difference! I did lose 2 mpg, yes, but I'm sure a lot of that is because I now drive the car harder than before... because it's a lot more fun! I rev at 2400 rpm at 70 MPH now, but I'll never go back.
Which is why I went with the Ford 8.8 axle. If you don't have a G-body 8.5 lying around, it's a great value.
- Status
