'69 L78 'Velle Smog ID

[mockingbird812]

[mockingbird812]

[TimG]

Tubes to manifold are reproductions, originals are tapered, not crimped.

[JoeG]

The end of the original tubes on my '69 Chevelle are capped off and the #1, #7,&#8 cylinder tubes come out of the center of the cap.
Lke Rick-Mr70- said there should be a machined numbered section on the bolt boss on the underside of the pump-ex.#12191S.......

[budnate]

something like this....

[JoeG]

This might help--the diverter valve on the left is NOS, the one on the right is Memmorex(ASL)--Nice copy.
The original pump pulley also had a very deep"V" groove.Just some info.....correction for above--#2,#8,#7cylinders
Can you break down those numbers into English Bud?.....

[budnate]

I was trying to learn about smog stuff but had very little luck coming up with much info the guys that know it are not openly sharing...what I gathered is the one I posted is what they refer to as a "Julian date" I think it reads as 98th day of 8 meaning 68 and I cant find me meager notes at the moment the 1 and the Z are where it was made and application or something close to that..hopefully Rick will give us a lesson on the subject.

Bud.

[mockingbird812]

Thanks for yr help guys!

Sam