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#72813 02/05/2007 6:41 PM | Joined: Nov 2000 Posts: 1,974 'Bolter | | 'Bolter Joined: Nov 2000 Posts: 1,974 | I think it is a 1946 3/4-ton or 1-ton 216. The "D" is for 1946. Check out this webpage http://chevy.tocmp.com/models/engine.htm#41eng . Keith has posted a LOT of useful info - for free, but some of it needs a little help. In the case of your ADCA serial no. The first "A" is a prefix for 3600 & 3800 series. The "D" is model year 1946. The "C" also designates 3600/3800 series and the last "A" is the plant code for Flint regular engine. The block casting number and casting date, both found on the passenger side of motor are also helpful. Good luck!
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