Join us on Facebook: Search for 'ConcoursMustang' Private group!
https://www.facebook.com/groups/concoursmustang/
SAAC-50 , Sonoma, CA August 21-24, 2025
http://www.saac.com/
Recent Posts
Hello
69 Boss 302 VIN# 9F02G189***
Built 4/25/69.
Owner claims that it does not have any traces of slop grey, but a rather dark red oxide type!
Did a search about Dearborn red oxide, but no conclusive info found.
Red oxide at Dearborn is most typically seen very early in production . By April 69 slop grey was the typical . With that said that doesn?t preclude the red oxide just to say it is out of the ordinary. For example I have seen a very burgundy looking paint that maybe mistaken by the uninformed as red oxide but it was just an unusual mixture of slop paint. Be prepared for push back. You would typically need some type of documentation like restoration pictures in an undisturbed matrix to support why you made your choices. If that can?t be accomplished then it is best to go with the typical . That is if planning on showing in concours. Of course it is your car and it is up to you to determine which makes the most sense to you.
Had to think about that one Bob. I looked back and found the thread about change over date from C6AE-G to C7AE-E intake manifold.That only means something if your reported data doesn't have any missing data and can be shown to be conclusive. Given Fords documented cut off date for intake do not jive with your data in concours for example you would be expected to have documentation(pictures etc) to support a later then 6M intake usage. Fords documentation trumps any well intentioned internet survey etc until more conclusive data suggests otherwise which has happened before but not for this
not much data, but:
oldest C6AE-G casting of 6M9 reported
newest C7AE-E casting of 7B7 reported
that puts change over between late Jan 67 thru Feb 67. Which would mean the large thermostat housings were still being used in Jan, maybe in Feb too.
HelloRed oxide at Dearborn is most typically seen very early in production . By April 69 slop grey was the typical . With that said that doesn?t preclude the red oxide just to say it is out of the ordinary. For example I have seen a very burgundy looking paint that maybe mistaken by the uninformed as red oxide but it was just an unusual mixture of slop paint. Be prepared for push back. You would typically need some type of documentation like restoration pictures in an undisturbed matrix to support why you made your choices. If that can?t be accomplished then it is best to go with the typical . That is if planning on showing in concours. Of course it is your car and it is up to you to determine which makes the most sense to you.
69 Boss 302 VIN# 9F02G189***
Built 4/25/69.
Owner claims that it does not have any traces of slop grey, but a rather dark red oxide type!
Did a search about Dearborn red oxide, but no conclusive info found.
Please advice.
Thanks
John
I have a half decent Jan 67(67 with 1 dot) thermostat housing (pictured), would like to trade for a half decent Nov 66 (66 with 11 dots) housing. If not, then I will be using it on my own engineI believe those C5AE thermostats housings were used on Mustang FE engines on or before Dec 1966 . That was when the smaller thermostat came into use and consequently caused a change to the C7AE-A thermostat housing which was designed around the smaller thermostat.
note: these are the large thermostat housings
