Casting # on Heads?

[Darkmage]

Had a Very interesting find.... someone help explain this to me. On 89-91 Quad's what Head casting numbers came on them? Also its the last 3 digits of the casting number that are important correct? I dont want to give out too much info on this find, to prevent my ego from being hurt, but anyone with any info on head casting numbers, and the differences in between would help put this 2 year long problem to a halt.

[90BerettaGTZ]

http://www.ny-jbodies.org/forum/library/2.3/heads.htm

[AmIGrand]

If it's a DOHC it should be a 955, some '89's had 086's as well.

[darkfox]

there was another thread onthis...