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| Mechanical and Engine Tuning and Mods Found a way to add horsepower by tuning a few parts? Have some questions about Tuning your own engine? Well post them here and learn from other members. |
This is a discussion on 390 service block date code location within the Mechanical and Engine Tuning and Mods forums, part of the Tech Forums category; '67 bird with a 390 that I am trying to get running, after changing out dist and carb, I had ...
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11-12-2019, 09:49 AM
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390 service block date code location
'67 bird with a 390 that I am trying to get running, after changing out dist and carb, I had problems getting it started. I was a tooth off on the distributor, restabbed that and was checking fluids when I got the dreaded chocolate milk dipstick. I have pulled the heads off and they are C8AE-H. The intake is the right S code late '66.The block date code is 5k26 so it could be Oct 26, 1965 or 1975.
I can't find a decade code on the block, the rear plate on the drivers side is blank, any other locations I should de-crud next--I think I just created this cars nickname, "de-crud mobile". Thanks Dave 
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12-19-2019, 09:59 AM
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Here's a good article that explains block casting numbers. The date code should be near the oil filter mount.
Deciphering Ford Parts Date Codes - FORDification.com Based on your 5K26, the date is 19_5, October 26. The C on the head signifies the decade, 60's, so your engine was cast on October 26, 1965. Since the model lines came on in the prior September, your engine was made for a '66 vehicle.
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Thunder
