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What year(s) were the Cat 3406, 3406A, 3406B, and 3406C built?

Which ones were mechanical?

Which ones had ECM?

Which ones had ATAAC?

Which ones had PEEC?

Sorry for all the questions, but thanks alot for any answers!

Doosey
 

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Cat 3406 and 3406A are the same. They only labelled it A I think after they came up with the B version. CAT 3406 was released in 1973.

3406A,B&C are all mechanical, However the B&C models are also PEEC.

There is also the 3406E that carries an ECM
 

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Trying to learn a little about the 3406 in my 359 Pete. The engine serial # is 7FB11795. It's a B model is about all I know. It's not an Air to Air so I thought it was an A model. When did they start air to air?
 

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Trying to learn a little about the 3406 in my 359 Pete. The engine serial # is 7FB11795. It's a B model is about all I know. It's not an Air to Air so I thought it was an A model. When did they start air to air?
I may be off a year or two, but that last 359s 86 and first part of 87 were ATA. I don't recall that 85s came with that option though.
 
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