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View Full Version : Questions regarding my 72 Stang...


www.teamamf.com
12-15-2005, 10:53 PM
Well, here is the scoop. I have a 1972 Stang Fastback, right now has the stock 302 2bbl in it. I have a NICE lead on a 429 SCJ, and I would love to drop that in here. Getting it in the car would be no problem at all, but my question relies on these questions:

Rear end setup. I believe stock it carries a 8.8 and I am not sure on the gear ratio. I will have to open it up and check..What would you suggest? I have a feeling most are going to say upgrade to a 9", but then again, will the 8.8 hold, and what gear options would you recommend? I want to be able to drive it daily as well, so looking for something I can use for strip and street.

Transmission - Basic C6??? BAHHH!!! Don't know what is recommended. The engine built right now has about 500 hp with the attachments and mods, so I need something to hold it.

FRAME! - Big questions. I don't want it twisting all to hell, being my first older restoration, what would I do to make this thing tighter than a virgin hooker?


Anyways, keep in mind costs. I don't have tons of money(Granite it does take a lot of cash), but I can afford the basics. Here are some basic pics of the car. I bought it for 1200.00, I figured it was a half way decent deal...

http://memimage.cardomain.net/member_images/6/web/654000-654999/654924_207_full.jpg

http://memimage.cardomain.net/member_images/6/web/654000-654999/654924_209_full.jpg

http://memimage.cardomain.net/member_images/6/web/654000-654999/654924_211_full.jpg


Thanks for any recommendations, I will be tearing into this car here probably around the beginning of next week, so I will keep everyone updated, along with pictures...

Chris...
http://www.teamamf.com

tbird
12-17-2005, 12:58 AM
It would put a detroit locker in the rear. Make sure the axles are at least a 31 spline.
If not , order the locker for a 31 spline and then order an aftermarket axle to fit. If its got 28 spline axles , it might be a year and it might be the first time you use slicks when one breaks, and often it will ruin the locker.

Go with C6. Your gonna hear (they eat a bunch of power). Whoppededo. They will last a long time and take tons of abuse. Get a converter setup of for the car to complement the setup, it will make all the difference in the world.

Thats got leaf springs correct? Traction bars wit the snubber at the spring eye or caltracs will hook it.

Cant help ya with chassis strengthening.

Jim Monson
12-17-2005, 10:15 PM
Get a good set of subframe connectors to stiffen the chassis. You can get away with the bolt in style but I prefer to weld them in.

www.teamamf.com
12-21-2005, 01:13 PM
Get a good set of subframe connectors to stiffen the chassis. You can get away with the bolt in style but I prefer to weld them in.

Yeah, I would prolly weld them in...On a 1972 car, prolly the safest anyways...

STEVEB
12-21-2005, 04:52 PM
That won't have an 8.8 they only came in 86 and newer Mustangs.It's a 302 cu.in. car so it will most likely have an 8 inch rearend,that would survive ok with a small block,but it will not survive behind a big block,sorry bud,but a 9 inch is the way to go.

Steve

www.teamamf.com
12-21-2005, 11:21 PM
That won't have an 8.8 they only came in 86 and newer Mustangs.It's a 302 cu.in. car so it will most likely have an 8 inch rearend,that would survive ok with a small block,but it will not survive behind a big block,sorry bud,but a 9 inch is the way to go.

Steve

Shows ya what I know about these damn things. lol...I was thinking it was a 8.8, but oh well...I will have to keep my eyes out for a good 9" then...

Chris...

ROB
12-22-2005, 03:47 PM
Actually,

The 8.8 is plent strong for that application and in fact is probably stronger than a 9" unless you use a better than normal production case.

The stock 9" case has a pinion support, but the area that surronds the support bearing in the case is thin and they tend to break under any form of severe usage.

The 8.8 unit has all the same shaft and bearing diameters as a 12-bolt Chevy, but a shorter pinion. I'm sure you'd have no trouble with a 12-bolt, therefore the 8.8 will perform even better.

Other advantages of 8.8" vs 9" are increased gear efficiency and low cost to build, when good parts are being considered.

I agree with the idea of using a C6 trans. No need to reinvent wheels.