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I'm trying to figure out the casting numbers on the heads I got off this 90 rollor motor 360. I have some other heads from an 87 and also from a 79. There are only three digits casted on the 90's roller motor heads. Under the rocker arm assembly. the other heads have more like 7 digits on the casting. Are these 3 digits the cast number for the heads or did they put the numbers elsewhere?
Thanks in advance.
mid_evil_thymz
Thanks in advance.
mid_evil_thymz