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Here is a set of BBC 3946074 aluminum cylinder heads date coded 5 15 69 and 4 9 70 . I took this set of heads in a trade about 10 years ago and will never use them . Here is what I know about them: These heads have been ported by Diamond Racing Engines( stamped on heads)and have had numerous repairs as you can see from the photos. One head was cracked so I sent it away for repairs and I put in $300.00 to have it professionally welded, then I had new seats installed where needed , new guides installed where needed, and all new stainless steel valves installed along with L88 valve springs to the tune of $400.00. I had them pressure tested and they passed. I have about $1200.00 in them total but will sell them to the highest buyer without a reserve. These are modified used heads and have not been tested on a running engine so I am selling them as is to the highest buyer. Shipping in the lower 48 states only.
On Dec-02-11 at 15:33:46 PST, seller added the following information:
Just to be clear: Theseheads are sold as is without returns or warranty as they are used parts. These heads have been modified .