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Discussion Starter · #1 ·
I have a C6ME block. I was told it was a 390 but i've seen the numbers 66 427 on the rear of the block that's covered by the bellhousing. What do I have. It has C7AE heads? And C6AE intake. Also the timing chain cover has a C3AE # and the ford logo with the name SCHEFFIELD under it.

John
 

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When you can get some pix posted of the block or can give me some further specs, I'm sure we can ID it no problem.....

In the meantime, try fomoco.com....they have a good FE forum...

Good luck!

Pat
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Casting numbers on 428 blocks also have the C6ME stamp. You can check if it's a 428 by looking just inside the center freeze plug opening on the side of the block to see if there is a "428" stamp, which would confirm if it's a 428.

If it's a C6ME-"A", it would be a mechanical lifter 428 block.

You mentioned it had "66-427 stamped in the back. Does it also have the word "HI" or a large check mark cast in the block in the same area?

There were over 24 different casting numbers for 427 blocks, Soooo!

Doug Whisenant

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Hey Doug....wouldn't he be able to tell visually...?

I gave him some specs in chat earlier...bore size etc..

Were all of the '66 427's crossbolted side oilers?....that would be an obvious give away...

The 428, which I believe was only available in PI form in '67, was based on a center oiler block, yes...?

Pic is worth a thousand words here...*G*

Pat
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I've had a couple of 390 blocks that had the 66 427 on the rear along with the rear side oiler bosses which were undrilled. Ford just used the rear mold in several applications which was probably for convenience.
 

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Hey Pat,

The 427cross bolted side oilers started production sometime early in 1965, so All 66-427s would be side oilers. I'm sure you mentioned to him to look for the oil galleries on the left hand side of the block. There is a oil gallery plug at each main bearing web. There is also two oil gallery plugs on the lower backside of the block next to each other.

When it comes to 428 blocks, just about anything seems to go. The block I mentioned earlier C6ME-A was a 66-428-4V block, I've been told but haven't seen one yet, that they didn't have any oil galleries, which would back up my statement of being a solid lifter block. The C7ME-A were the PI blocks as you stated. And I beleive the CJ blocks used C7ME-A and C. I've also heard, not all of the 428 PI's and CJ's had a casting number stamped on them either. So verifiying a 428 PI or CJ externally could be very difficult to say the least.



Doug Whisenant

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<P ID="edit"><FONT SIZE=-1>Edited by whizco on 03/10/01 08:15 PM (server time).</FONT></P>
 

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Discussion Starter · #7 ·
Thanks for the info. I'll get some digital pics and do some more investigating on the numbers etc. I'll post as soon as I can. Thanks again.

John
 
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According to listed block numbers in How to Rebuild Big-Block Ford Engines, the C6ME can be a 390, 410, 428 and even 330MD and 330HD truck engine. The C7AE heads can be found on the 352, 390, 410, or 428. The best way to ID the block IMHO is to measure the cylinder bore. And it might be advisable to ID the crankshaft.

67 S-code fastback
 
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