Damn whitt!!! So your going with a 408-409, cam, 3300ax, 4L80, and a new beefier rearend??!! That thing is going to be sick!!! I really would pay to see that!

 

Great Googly Moogly!

 

The offroad crowd kinda drives up the prices......very high demand!

 

I have a 6 lug 10.5" 14 bolt in my blazer. It cost about $500 for the new billet hubs and then you need to do a disk brake conversion on top of that. Its not cheap and I dont think you really need a full floating rear end anyways so I wouldnt waste your money on it. but if you want to check it out, this is where I got them. http://www.gradysoffroad.com/welcome.html Go to monthly specials and thats where they are. It will also be pretty hard to run any kind of nice looking wheel on that rear end, because you need to be able to fit that big full floating hub through the wheel, and most 6 lug wheels dont have a 4" opening in them.

I personally would either find a semi floating 9.5" 14 bolt that already has 6 lug axles in it, or maybe even get an 8 lug one and buy some upgraded 6 lug axles for it, since you are gonna have to convert to disks anyways, it really doesnt matter if the original one is 8 or 6 lug, because you will have to change out all the parts anyways. You can find them at the junkyard, they were somewhat common on the OBS trucks, they used a lot of them in the lighter duty 2500s, usually the ones with a small block. and vans as well. They were also pretty common in the 73-91 2500 suburbans.

A 9" may just end up being your best bet since there is no rear that will just bolt in to your truck.

 

That 8.625" is gonna flex a lot under load, I've been saying that for a while about big power in a 2x4 vehicle. That axle simply isn't made for that and can't take it.

An Eaton, forged axles, diff girdle, and welded axle tubes is about all you can do. That's not enough for all that weight and power.

A 9.5" SF would be a good option but did they come in a vehicle w/ coil springs?

 

Don't count that 8.6 out. I have seen a Buick GN run a 8.70 in the 1/4 on a one. Of course he has supports welded on his axle tubes and all the goodies inside, he is in the process of getting a Ford 9in. That is a 3700lb 1200hp car.
I am not saying that the stock diff will hold up to everything but, they can be fairly strong.

 

Well ya but a Tahoe tips the scales close to 6000lbs from what I remember so I suppose it's relative. You'd need a spool out back with what 33-35 spline axles to hold up? For the money needed to get that 10 bolt up to par I'd bet you could have a 9.5" or 10.5" for nearly the same amount. ?

 

Well the rear wasn't broken,the emergency brake bracket that holds the brakeshoes inside the rear caliper broke made all kinds of banging noises and locked the wheel when I reversed.But I think the handwriting is on the wall and a upgrade for the rearend is in the near future.I think I'm going with a 9" Ford in a custom housing.Any suggestions on what components and who to use would be appreciated,I've been looking a the Currie Enterprizes website.

 

Weight has alot to do with it. Although, it will be awhile before Whitt hits 1200hp, maybe . Currie makes damn good stuff.

 

git a 9" with 33-35 spline axles and a detroit locker. my friend has this in his f-bod and it is a nice settup. had a spool for like 2 months and went through a set of tires.