normal_post in 340 T/A AAR exhaust manifold date code? in Exhaust Author Topic: 340 T/A AAR exhaust manifold date code?  (Read 732 times)

Offline Monsterzero

  • Trade Count: (0)
  • Leaning Tower of Power
  • *
  • Posts: 34
  • Credits: 340
    • Share Post
clip in 340 T/A AAR exhaust manifold date code? in Exhaust
340 T/A AAR exhaust manifold date code?
« on: May 20, 2019, 10:01:59 AM »
I was looking at a pair of exhaust manifolds for a '70 T/A motor. the date code #s are pictured below. What are the dates on these manifolds? One reads 10390 or 10890 and the other reads 11140. Would they be correct for a car assembled on 4/16/70?



Linkback: https://forum.e-bodies.org/exhaust/17/340-ta-aar-exhaust-manifold-date-code/11356/

Offline 6bblgt

  • Trade Count: (2)
  • Six Pack
  • ****
  • Location: Las Vegas, NV
  • index in 340 T/A AAR exhaust manifold date code? in Exhaust
  • Posts: 3271
  • Credits: 18420
    • Share Post
xx in 340 T/A AAR exhaust manifold date code? in Exhaust
Re: 340 T/A AAR exhaust manifold date code?
« Reply #1 on: May 20, 2019, 10:35:30 AM »
I think that one is "11149" Friday 11/14/1969

do you have a close pic of the other date?
211-250318130150 in 340 T/A AAR exhaust manifold date code? in Exhaust

Offline Monsterzero

  • Trade Count: (0)
  • Leaning Tower of Power
  • *
  • Posts: 34
  • Credits: 340
    • Share Post
xx in 340 T/A AAR exhaust manifold date code? in Exhaust
Re: 340 T/A AAR exhaust manifold date code?
« Reply #2 on: May 20, 2019, 11:15:35 AM »
I think you're right. Sorry, I don't have a close-up picture of the other manifold.

E-Bodies Cuda Challenger Message Forum

xx in 340 T/A AAR exhaust manifold date code? in Exhaust
Re: 340 T/A AAR exhaust manifold date code?
« Reply #2 on: May 20, 2019, 11:15:35 AM »

Offline 70 Challenger Lover

  • Trade Count: (1)
  • Six Pack
  • ****
  • Location: Fillmore California
  • index in 340 T/A AAR exhaust manifold date code? in Exhaust
  • Posts: 2286
  • Credits: 4960
    • Share Post
clip in 340 T/A AAR exhaust manifold date code? in Exhaust
Re: 340 T/A AAR exhaust manifold date code?
« Reply #3 on: May 20, 2019, 11:22:24 AM »
How about this code?

Offline 6bblgt

  • Trade Count: (2)
  • Six Pack
  • ****
  • Location: Las Vegas, NV
  • index in 340 T/A AAR exhaust manifold date code? in Exhaust
  • Posts: 3271
  • Credits: 18420
    • Share Post
xx in 340 T/A AAR exhaust manifold date code? in Exhaust
Re: 340 T/A AAR exhaust manifold date code?
« Reply #4 on: May 20, 2019, 10:16:17 PM »
looks like 05 28  :rubeyes: I think it's just missing a digit  :dunno:

Wednesday 05/02/1968
Sunday 05/12/1968
Wednesday 05/22/1968

Offline 70 Challenger Lover

  • Trade Count: (1)
  • Six Pack
  • ****
  • Location: Fillmore California
  • index in 340 T/A AAR exhaust manifold date code? in Exhaust
  • Posts: 2286
  • Credits: 4960
    • Share Post
xx in 340 T/A AAR exhaust manifold date code? in Exhaust
Re: 340 T/A AAR exhaust manifold date code?
« Reply #5 on: May 21, 2019, 05:30:38 AM »
I was trying to figure that out too. Is that a zero at the very end? If so then I guess it would be May 28, 1970?

Offline 6bblgt

  • Trade Count: (2)
  • Six Pack
  • ****
  • Location: Las Vegas, NV
  • index in 340 T/A AAR exhaust manifold date code? in Exhaust
  • Posts: 3271
  • Credits: 18420
    • Share Post
xx in 340 T/A AAR exhaust manifold date code? in Exhaust
Re: 340 T/A AAR exhaust manifold date code?
« Reply #6 on: May 21, 2019, 06:46:19 AM »
there is a screw at each end

E-Bodies Cuda Challenger Message Forum

xx in 340 T/A AAR exhaust manifold date code? in Exhaust
Re: 340 T/A AAR exhaust manifold date code?
« Reply #6 on: May 21, 2019, 06:46:19 AM »

Offline 70 Challenger Lover

  • Trade Count: (1)
  • Six Pack
  • ****
  • Location: Fillmore California
  • index in 340 T/A AAR exhaust manifold date code? in Exhaust
  • Posts: 2286
  • Credits: 4960
    • Share Post
xx in 340 T/A AAR exhaust manifold date code? in Exhaust
Re: 340 T/A AAR exhaust manifold date code?
« Reply #7 on: May 21, 2019, 08:04:56 AM »
I see that at the beginning but not at the end. I donít think itís really a screw though. Iíve seen that casting mark on other manifolds though not sure what it means. Once I get it to me in a few days, I can head blast it and hopefully read it better.

Offline 6bblgt

  • Trade Count: (2)
  • Six Pack
  • ****
  • Location: Las Vegas, NV
  • index in 340 T/A AAR exhaust manifold date code? in Exhaust
  • Posts: 3271
  • Credits: 18420
    • Share Post
clip in 340 T/A AAR exhaust manifold date code? in Exhaust
Re: 340 T/A AAR exhaust manifold date code?
« Reply #8 on: May 21, 2019, 08:55:55 AM »
 :takealook: here's what I see  :dunno:

"8" & "9" are sometimes hard to distinguish in castings and the 05 28 could be May 28th of an unknown year (5/28/??); you'd have to collect dozens of 340 manifold casting examples including some from known original to engine/car to find any consistencies in the format used

but I believe by the time the T/A AAR cars came out, the exhaust manifolds had the part number on the back/engine side  :notsure:

Offline 70 Challenger Lover

  • Trade Count: (1)
  • Six Pack
  • ****
  • Location: Fillmore California
  • index in 340 T/A AAR exhaust manifold date code? in Exhaust
  • Posts: 2286
  • Credits: 4960
    • Share Post
xx in 340 T/A AAR exhaust manifold date code? in Exhaust
Re: 340 T/A AAR exhaust manifold date code?
« Reply #9 on: May 21, 2019, 09:27:52 AM »
Good eye, you might be right. Just bought mine the other day off eBay so Iíll have to blast it and post what I see with the gunk cleaned off.

In the end, date doesnít matter in my case. I was just curious. Iíve been looking for an affordable decent original set for years to go with a 340 motor Iím storing. Someday Iíll find the right car to do a nice build on. The passenger side manifold seems to be the tough one to find.

Offline Bossgold

  • Trade Count: (0)
  • Small Block
  • **
  • Location: CA
  • Posts: 181
  • Credits: 1640
    • Share Post
xx in 340 T/A AAR exhaust manifold date code? in Exhaust
Re: 340 T/A AAR exhaust manifold date code?
« Reply #10 on: May 21, 2019, 11:23:00 AM »
I asked this questions a few months back and my understanding was many of the AAR/T/A exhaust manifolds had no dates codes but just a casting number facing the inside of the engine side.

E-Bodies Cuda Challenger Message Forum

xx in 340 T/A AAR exhaust manifold date code? in Exhaust
Re: 340 T/A AAR exhaust manifold date code?
« Reply #10 on: May 21, 2019, 11:23:00 AM »

Offline 70 Challenger Lover

  • Trade Count: (1)
  • Six Pack
  • ****
  • Location: Fillmore California
  • index in 340 T/A AAR exhaust manifold date code? in Exhaust
  • Posts: 2286
  • Credits: 4960
    • Share Post
xx in 340 T/A AAR exhaust manifold date code? in Exhaust
Re: 340 T/A AAR exhaust manifold date code?
« Reply #11 on: May 22, 2019, 05:54:03 PM »
:takealook: here's what I see  :dunno:

"8" & "9" are sometimes hard to distinguish in castings and the 05 28 could be May 28th of an unknown year (5/28/??); you'd have to collect dozens of 340 manifold casting examples including some from known original to engine/car to find any consistencies in the format used

but I believe by the time the T/A AAR cars came out, the exhaust manifolds had the part number on the back/engine side  :notsure:

Got the manifold delivered today and youíre right that itís a screw head on either side of the date but no year. I never thought about those screw heads before as actually being screws. Is that some fastener the foundry used in the mold to hold the dates in?

The manifold is in super condition. Even the flapper works nice.

E-Bodies Cuda Challenger Message Forum

xx in 340 T/A AAR exhaust manifold date code? in Exhaust
Re: 340 T/A AAR exhaust manifold date code?
« Reply #11 on: May 22, 2019, 05:54:03 PM »

Tags: 340 t/a aar exhaust 

Share via delicious Share via digg Share via facebook Share via linkedin Share via pinterest Share via reddit Share via stumble Share via tumblr Share via twitter Share via whatsapp

clip
Clarification on Exhaust Manifold date codes and those without dates

Started by Bossgold

3 Replies
663 Views
Last post February 04, 2019, 11:12:26 AM
by Bossgold
clip
69 Date Code 440 Cast Iron Intake Manifold

Started by rebelyell

0 Replies
397 Views
Last post July 18, 2018, 12:50:48 PM
by rebelyell
xx
340 exhaust manifold

Started by 73chalngr

6 Replies
941 Views
Last post November 13, 2018, 06:44:59 AM
by 73chalngr
xx
Looking for a 2899879 exhaust manifold

Started by ksierens

4 Replies
953 Views
Last post February 05, 2018, 03:30:09 PM
by 71GranCoupe
xx
Exhaust manifold Gasket

Started by Husk Challenger

19 Replies
1577 Views
Last post July 26, 2018, 10:30:55 AM
by Husk Challenger