Light weight,smog head, prone to cracking around the exaust seats (or nearly in two).
I find about 50% busted on return core motors. However if they are not cracked by now you may get some more miles from them.appox. 9.5 to 1 cr with flatop pistons.
P.S. I use them for expermenting.
[This message has been edited by Harley (edited 07-19-99).]
Ok, that’s all I need to know. I will just throw them back into a dark corner. I do have another question though. The heads I have on my 400 are weird. I can’t remember the #'s, but I think it something like 992, or 997 or something similar to that. Someone said they were 76cc smog heads that weren’t that good. But them someone else noticed they had double triangles on them and said they weren’t that bad. I guess I will stick with them for a while.
Again thanks for all the information. I would just like to say to you and everyone else on this board that the entire Chevelle web page and the Chevelle board is great. Great people, great information where anyone can ask a question or look something up.
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