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I have a 67 camaro with double hump heads, when i took it in to a shop to get a new intake they suddenly had to take a lot of extra time on the car. I've known i had rare heads, just forgot to mark them. Could someone please tell me as many ways as possible to identify double hump heads so that when i go in, i can make certain i still have my heads. i dont know exactly how to identify them.
 

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Check the casting numbers under the valve cover. Pay specific attention to the last three numbers. Most of these (what you refer to as Double Hump) will have the numbers 461 or 462. The 462 head is a later version and has a slightly different Quench area in the chamber, neither has external assessory holes. A later version 291 head was also availible and I would rather have the later version because it is very near to the 462 casting but with assessory holes. There are however many other factory performance head castings. Spend the 10 bucks and get a casting number book. Then you will know for sure!
 

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The Smell of Nitro in the morn
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Go to this GM site,this has all the info on all of their heads. Scroll to the bottom and it gives casting #'s to serial #'s on of all of them plus a picture.You mite want to surf the site also.
LOL :D
<a href="https://www.spoperformanceparts.com/" target="_blank">https://www.spoperformanceparts.com/</a>
 

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make sure and look around the shoulder of the head and block. See if it looks like there has been a new head gasket installed, or scratches on the bolts, so on. Changing an intake should only take a couple of hours.If the engine was painted assembled, and they did change the heads on you, the paint on the deck of the block will be scraped off.
 

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The Smell of Nitro in the morn
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If you have nuts or bolts holding on the exhaust header or what have you. There will be fresh scratches, cleaned, marks on the fasteners from the removal and replacement, and like said if they were decient they put on new head gaskets.

Theses sites are for all chevy engine parts.
chevellepages.com/castings.htm

www.planet.net.au/~alexst/chev-spec.html

<a href="http://www.mortec.com/]http://www.mortec.com/[/URL]
:p LOL
 

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One wise investment for the garage/shop is a numbers/letters metal stamping set. I stamp my initials in blocks, heads and cranks if I want to make sure mine comes back to me. You might be suprised at how many times they try to give you someone elses iron!! Is it my imagination that it seems to always involve a highy desirable part?

Trees
 

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Trees has the right idea. Heads you will need to stamp. On blocks you can copy down the numbers/letters on the front pad.

Camelback heads aren't really that rare.
 

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double hump heads

the double hump heads on the front and back of the heads , it will start with one hump then a straight line about two inchs long then another hump then go,s down about two inchs ,go,s about two inchs across the bottom then turns up toward the other hump about two inchs. it will be like that on both heads front and back.
 
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