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Old 05-01-2012, 11:22 AM   #21
Bruce Lancaster
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Join Date: May 2010
Location: Madison, NJ
Posts: 5,230
Default Re: Are these Denver/Cheater Heads? ID help.

Denvers were all iron, all prewar. They came in 81AS at 60 CC and in 2 versions with merc 239 numbers...I have all the cc specs around somewhere. The 81's at 60 CC were a hot setup for stock spec racers but I believe they were discontinued before the war and so were very rare by the time they were widely known...I have a set of the 81's, and it is the only set I have seen. The guy I bought then from was in the race car section at hershey, and said that he had brought the things to Hershey for 15 years and I was the first person to notice what they were! Some piece of Ford literature I have designates them for something like "high altitude and natural gas" use.
The real Canadian aluminum C7RA was slightly higher comp than the 59A-B US head, probably about enough to compensat the heat loss to aluminum...it was imported in considerable numbers in 1960's for same market that wanted Denvers...it had a normal Ford chamber with high flow area.
The Weiand copies were MUCH cruder castings and had a low roof chamber like most aftermarket heads. I think they were sold with two comp ratings originally.
Around 1968, the Honest Charley catalog shows both real and Weiand heads.
I got my C7's from Joblot in the '70's...they had stacks of new Canadian aluminum stuff, I think like 17 dollars per head. I was too poor to buy extras...
Joblot used to let me go back and roam the warehouse...incredible experience!
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