Rear diff ID
Thread Starter
Heel & Toe
Joined: Aug 2015
Posts: 20
Likes: 1
Rear diff ID
Hello all
I've been a lurker for a while as I have been fixing up a 1968 BB Coupe for my dad. Lots of great info on here, but i've hit a roadblock.
We took the body off and had it and the frame blasted. Once I got the frame back, I started looking around and decided to check the rear differential number in an attempt to identify it.
I can't find anything that matches my numbers and was hoping you all could help.
Drivers side casting: K187 (I assume 11/18/1967)
Passenger side casting: 8899143
Stamp on base: OK 334 (backwards)N 7E
Any ideas on that stamp?
Thanks
I've been a lurker for a while as I have been fixing up a 1968 BB Coupe for my dad. Lots of great info on here, but i've hit a roadblock.
We took the body off and had it and the frame blasted. Once I got the frame back, I started looking around and decided to check the rear differential number in an attempt to identify it.
I can't find anything that matches my numbers and was hoping you all could help.
Drivers side casting: K187 (I assume 11/18/1967)
Passenger side casting: 8899143
Stamp on base: OK 334 (backwards)N 7E
Any ideas on that stamp?
Thanks
Thread Starter
Heel & Toe
Joined: Aug 2015
Posts: 20
Likes: 1
I spun the tires and counted the drive shaft revolutions and came up with 3 full turns which I believe is 3.08, so that is probably right. Thanks!
Any idea how that will drive with an m21 and l71? I am trying to make everything somewhat correct to what we believe it was originally. Seems like it should have a 4.11:1
Any idea how that will drive with an m21 and l71? I am trying to make everything somewhat correct to what we believe it was originally. Seems like it should have a 4.11:1
Drifting
Joined: Nov 2013
Posts: 1,546
Likes: 281
From: Scottsdale Arizona
I spun the tires and counted the drive shaft revolutions and came up with 3 full turns which I believe is 3.08, so that is probably right. Thanks!
Any idea how that will drive with an m21 and l71? I am trying to make everything somewhat correct to what we believe it was originally. Seems like it should have a 4.11:1
Any idea how that will drive with an m21 and l71? I am trying to make everything somewhat correct to what we believe it was originally. Seems like it should have a 4.11:1
Team Owner
Joined: Sep 2006
Posts: 31,172
Likes: 4,250
From: Westminster Maryland
Hi 68,
I think most people would say that a 4:11 ratio would be fun for a little while but would wear out it's welcome pretty quickly with the L-71.
The 427 engines were available with the full range of ratios in 68 so anything would be 'possible' for your car…. only the tank sheet would indicate what was 'likely'.
Regards,
Alan
I think most people would say that a 4:11 ratio would be fun for a little while but would wear out it's welcome pretty quickly with the L-71.
The 427 engines were available with the full range of ratios in 68 so anything would be 'possible' for your car…. only the tank sheet would indicate what was 'likely'.
Regards,
Alan
Burning Brakes
Joined: Mar 2014
Posts: 904
Likes: 46
From: Crestline CA
Any idea how that will drive with an m21 and l71?
