Stock Eliminator Heads 441 question
 

Thanks to all that answered my question!
Regards
Doug

Re: Stock Eliminator Heads 441 question
 

Yes. Just because the casting number is the same, it does not mean the casting itself is the same. There are several known versions of the 441 head in particular.

Re: Stock Eliminator Heads 441 question
 

The specs that are listed in the NHRA guides may or may not be what was actually produced by the auto maker (all brands). The specs listed are the specs that NHRA Tech Department chooses to accept and publish as "NHRA's Accepted Specification". The acceptance process is usually done by what the auto maker submits to NHRA as the spec for specific engines. I believe NHRA has also altered some specs by what their Tech inspectors suggest or another long NHRA process. In short, What is published in NHRA specs may never be found in a junkyard or stack of engines. On the other hand you may find parts with the NHRA specs.

Re: Stock Eliminator Heads 441 question
 

Thanks Adger and Alan. This information makes picking used heads even a bit more difficult. I will have to cc all heads as I am sure I will not be able to tell the difference between a 63 and a 74 cc chamber volume! Any tips on selecting used 441 castings?
Regards
Doug

Re: Stock Eliminator Heads 441 question
 

I never saw a 441 head with anything but the large mid 70's CC chambers...

They were usually 75-76 cc's or a little larger, unmilled......

1.94-1.5 valves and there were some with 1.6 exhausts used on I believe 1970ish 400's in trucks with 3/8ths valve stems.....IIRC....

If they made a small CC version, I never saw one....

Re: Stock Eliminator Heads 441 question
 

I too have never seen one.

Re: Stock Eliminator Heads 441 question
 

Thanks Rich and Kevin! I will ask the owner who is selling the entire motor if I can c.c. the heads and then I will report back if he is agreeable.
Regards
Doug

Re: Stock Eliminator Heads 441 question
 

I'd say that 63 cc head is a mis-print. I've never seen or heard of a 441 head with 63 cc chamber. You might need to call tech dir in your div. OH! You would be able to SEE the difference between 63.3 and 73.26. Big difference.

Re: Stock Eliminator Heads 441 question
 

Thanks Terry!
Regards
Doug

Re: Stock Eliminator Heads 441 question
 

I would double check with tech, but I have done several different small blocks that have bee n changed from 76cc to 63.3, 75 350 w/882's is one 73-74 350's w/993's is another one that has been changed.
Can spot it pretty easy takes about .150'' angle mill reduce them to 64cc.
Mike Taylor 3601

Re: Stock Eliminator Heads 441 question
 

On the 290 '68 head, which is set for 68.9 cc's, it takes .008" off of the deck to reduce chamber volume by 1 cc. A good original pair of those that I did years ago, in their original state, after de-carbonizing the chambers until they looked brand new with the original valves still intact, checked out to be 79 cc's. It took .080" off the deck to get them down. After using the right valves and equalizing the seats, they finished up at 69.5cc's.
Sometimes when doing a set of heads, they need to be assembled and checked with the final valves you are going to use several times. This is labor intensive, to be sure, and takes time. That is why the noted best cylinder head guys out there charge a bunch for a good set of stocker heads. After the cam of your choice is installed where the grinder tells you to put it, the piston to valve clearance has to be verified, the proper push rod length has to be ascertained,(remember that sometimes the intake and the exhaust optimal push rod length might be different between the intake and exhaust,) and then the issue of getting the intake to fit comes up. This is not work that can be rushed,every bit of it has to be checked, rechecked, corrected as necessary, and verified. If you enjoy this type of work, it can be rather rewarding to see the difference between an OEM engine and one built to Stock Eliminator specs and experience how it runs.Best wishes on you and your project!

Re: Stock Eliminator Heads 441 question
 

Thanks Greg!
Regards
Doug