rear diff. axle code location
Thread Starter
Pro
Joined: Jan 2006
Posts: 532
Likes: 0
From: sarasota florida
rear diff. axle code location
Where is the two letter code stamped at for 66 in order to determine axle ratio and motor placement with unit. Is it on top where serial # is? If so then you can not read it unless you drop rear end or do a body-off resto. Still trying to determine if this car was original BB car. U-joints at half shaft yokes do have cap arragements and rear sway bar too. James
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,927
From: Washington Michigan
The ratio code and assembly date are stamped on the bottom of the diff housing, between the spring retainer plate and the camber strut rod bracket; will require some cleaning to see them. 
Thread Starter
Pro
Joined: Jan 2006
Posts: 532
Likes: 0
From: sarasota florida
thanks Knight37128 & JohnZ for the help. After using a can of brake cleaner to cut thru the crud this is what I found. code #AZ 1 22 66. (3.55:1 Positraction 4-speed 427) The approx. build date for car is Feb. 16, 1966. Does this date fit the time frame to be original? Everything looks to be pointing towards BB car with the exemption of not original small block hood and not original small block radiator a rad. support. Evidence of repair to original front end at right front headlight bucket area. Looks like they put small block parts to repair at time of accident. Straight frame with no evidence of repairs. what do you think? I,m totally confused now..
