Author Topic: date code on block  (Read 2217 times)

S7MS427

  • Full Member
  • ***
  • Posts: 209
    • View Profile
    • S-Tech Enterprises, LLC
Re: date code on block
« Reply #15 on: September 18, 2020, 07:33:30 AM »
Cleveland would cast the block & heads ( my casting date late Oct 65 ) and then assemble the engine ( mine Nov 4, 65 ), the stamped date & shift ID on the oil pan rail face.

Interesting.  I know where to find the assembly date (mine is 5L3, one day ahead of yours) but where is the shift ID located?
Roy Simkins
http://www.S-TechEnt.com/Shelby.htm
1966 G.T.350H SFM6S817
1967 G.T.500 67400F7A03040

J_Speegle

  • SAAC Member
  • Hero Member
  • *
  • Posts: 2437
  • Just here to help :)
    • View Profile
    • ConcoursMustang.com
Re: date code on block
« Reply #16 on: September 18, 2020, 02:06:42 PM »
Interesting.  I know where to find the assembly date (mine is 5L3, one day ahead of yours) but where is the shift ID located?

At the end /included in the machined date on the oil pan rail

Jeff Speegle- Mustang & Shelby detail collector, ConcoursMustang.com mentor :) and Judge

6S1568

  • SAAC Member
  • Sr. Member
  • *
  • Posts: 298
    • View Profile
Re: date code on block
« Reply #17 on: September 18, 2020, 07:12:16 PM »
So the letter "B" at the end of each of these examples is an indicator of the work shift in which the machine work on the block was completed, and not an inspectors mark. Correct?

6 A 26 B
and
5 D 28 B

Thanks

J_Speegle

  • SAAC Member
  • Hero Member
  • *
  • Posts: 2437
  • Just here to help :)
    • View Profile
    • ConcoursMustang.com
Re: date code on block
« Reply #18 on: September 18, 2020, 07:26:47 PM »
So the letter "B" at the end of each of these examples is an indicator of the work shift in which the machine work on the block was completed, and not an inspectors mark. Correct?

6 A 26 B   and   5 D 28 B

Believe that is the current thought. Only finding A's and B's so far

There are a fair share of other numbers. letters and symbols on the rail also. Those may indicate checks, confirmations and inspections of the block
Jeff Speegle- Mustang & Shelby detail collector, ConcoursMustang.com mentor :) and Judge

S7MS427

  • Full Member
  • ***
  • Posts: 209
    • View Profile
    • S-Tech Enterprises, LLC
Re: date code on block
« Reply #19 on: September 20, 2020, 12:33:41 PM »
Only finding A's and B's so far
I'm guessing that A would be 1st shift and B 2nd shift?
Roy Simkins
http://www.S-TechEnt.com/Shelby.htm
1966 G.T.350H SFM6S817
1967 G.T.500 67400F7A03040