Originally Posted by testlightST
Ive got a 67 mustang coupe. I just bought a 5.0 302 for it yesterday. I just wnat to go to a junkyard a pull a whole rearend, rear brakes( the whole set up) off of a car. My question is which year model would be best to look for. I want to put 17x9's wheels on the rear if that helps any! thanx for any help
I have done several of these.
Based on your info you need to stay with a rear end that is 57 1/2 inches from wheel to wheel.
What I would suggest is to stay with your existing 8 inch rear end. Lots of us are running 8 inch rear ends with hot 5.0 HOs and have had no problems. No slicks allowed.
If you don't have any rear under it now, look for 66-69 Fairlanes, Granadas, and V8 Mavericks. I would start with the V8 Maverick rears which are rumored to measure less than 57 1/2 but I have never seen one that narrow myself. The spring mounts are all the same dimensions. These rears should sell for $ 75 complete wheel to wheel. Grab the driveshaft too for another $ 20.
And while you are there, look for the 15/16 inch front sway bar on the Granada for $ 20 which bolts right on to your Mustang. Don't forget Granada disk brakes are a bolt on to your Mustang also and complete knuckle/brake/rotor assemblies should sell for $100 including master cylinder and prop valve.
If you want a 9 inch rear you will have to scour the yards and driveways for a rare and expensive Lincoln Versailles or 79-80 Mercury Monarch or Granada Delux, or some other 67-8 Mustang. The disk brake 9 inch will cost you $ 600+. A few 80 Monarchs came with 8.8 on leaf springs with 2.47 gears (same guts as late model Mustang GTs) and I have paid $ 50 for them complete.
3.25 or 3.50 gears work well with or without overdrive using a 25-26 inch tire. MII V6 cars had 3.55 gears. Most other stick shift cars came with 3.25s. An 8 inch "chunk" sells for $30-50 depending on gear ratio (2.80s sell for $ 20 noibody wants them). Posi's are very rare unless you find a 76-77 Mustang II V8 or Cobra, and used posi chunks (3.00 ratio) will cost $ 200+.