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Look on the top of them between the rocker studs for the casting number and the date stuff.

Casting number may end like this, -291, or this, -462 and other numbers.

Date stuff is alpha numeric like "A" for January, then "14" for the day of the month and finally like "7" for the year 1967. (I.e., A 14 7).

Hope this helps and MorTec's great site

http://www.mopar1.us/ebay/MorTec, Inc_ Chevy Smallblock V-8 Casting Numbers List.htm

is a lot of help here too as is the Chevytech site

http://www.chevytech.com/

pdq67
 

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-291's, good double-hump heads. May be medium or big valve so you never know until you look at the valves.

pdq67
 

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I don't think -492's were ever installed on a production engine so go from there. May have been tho for all I know so please bear w/ me.

Over-the-counter, OK.

pdq67
 

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Good old school heads. Your standard double humps. Will work well on a 327, if they're still in good shape.

http://www.chevytech.info/3c3890462.html

Mark
when i was talking to a new potential engine builder, he asked me about the engine, i have the 462 heads also, and i told him it had the "fuelie" heads

and he told me that i didnt have them (i didnt tell him the casting number or anything)

so is there a specific type of camel hump that is considered the fuelie head, or are they all?

i got the feeling that he thought i had no idea what i was talking about with engines
 

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The original "fuelie" head is the big valve -461 and I have a pair out in the garage!

They came on the 375hp/327FI engine in 1964 and '65 and other hi-po engines.

An easy way to tell them is that they are the only "double-hump" heads that have a double quench! All the others have the quench cut back on the sparkplug side.

Please take some time to pull up Chevytech.com here...

http://www.chevytech.com/

and go through the head number list and you will see what I mean here.

http://www.chevytech.com/3c3782461.html

pdq67
 
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