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post #1 of 2 (permalink) Old 02-02-09, 02:46 PM Thread Starter
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Question 428 Cj

I have a 428 CJ, I am wanting to confirm that it is a Cobra Jet Engine, it has the "c" mark on the back of the block and is stamped on the front of the block "9F031" but I am unable to find an actual casting number on the block. Has anyone come across this before?

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post #2 of 2 (permalink) Old 02-03-09, 02:08 AM
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Re: 428 Cj

Yep. Your does sound like a CJ block. 69 blocks did not all have casting numbers. This site should help. Click on component ID.

Mustang 428 Cobra Jet Registry
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