[RR67GTO]

Hello, I found an old junk yard that's been closed for a long time. Most of the Pontiac stuff i know. But, a strang set of heads have me tweaked because I can't find any information on them. The normal place for the heads marked just has a tall single vertical line. Not a number '1', but more of a line. Inside though the full casting number is poretty easy to read one I cleaned the area and used my glass to get in close. # 9778822. Now, I know that the 88 could be a slopy cast 9773322, but either way I can't find anything. And yup, they are 100% Pontiac and have the normal looking rockers, keepers and springs. One more question, I also seen a set of really nice # 15 heads. The books list this as a 360 HP 455 head, but yet I hear or read so little about them or their being used. Whats the deal with the # 15 heads? I ask this cuzz I got to 455 engines. One is new and has new SD ported 6X's but the other is a low compression 75 455 #51 head running fine but low on go. So, the #15's crossed my mind. BUt more because of lack of anying info I se about them. Thank you everyone for your input. I do use what I learn if it's something I can do or ned to do. < Mike >