|
06-06-2007, 10:40 PM
|
#1 |
|
Active Member
Join Date: Oct 2006
Location: Ohio
Posts: 1,643
|
12 Bolt Question
I am trying to confirm the date code on my 12 bolt J67
Did they make a reuck 12 bolt back in 57? Thanks Bill
__________________
1968 SWB 454 + .040, 490HP x 540 FT pounds of Torque 10-1 Kb Forged pistons, recon rods w/ ARP wave loc bolts 781 heads Ported with 2.19/1.88 SSTvalves Lunati 60204 cam, Micro Trol lifters, Ported Edelbrock Performer Rpm manifold armor coated, Pertronix Triple Strike Ignition Holley 770 Street Avenger carb,Headers armor coated Built by Watson Ruppel Performance in Sarahsville Ohio. Hardshift Tranny Built Turbo 350,TSI 10" 3000 stall 12 Bolt Eaton Posi 4.10 Richmond Gears moser axles  18.5" x 31" Hoosier Pro Street Radials  ET Classic 5 Wheels - polished Power Steering, Power Brakes,Disc Brakes,Tach & Gauge Dash, Tilt,Factory Air (gone) Custom Paint & Body Work Special thanks to my wife, my son and my money tree 
|
|
|
|
06-06-2007, 11:33 PM
|
#2 |
|
60-66 Nut
  Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,252
|
Re: 12 Bolt Question
No GM didn't make a 12 bolt truck diff in '57. The first year for the truck 12 bolt was '63 and they had pressed on backing plates and 10 spline axles. In '64 they went to bolt on backing plates, and in either '65 or '66 they went to 30 spline axles. Hope that helps.....
|
|
|
|
 |
| Bookmarks |
|
|
Linear Mode
