Color coding NOS SHP parts

[nuch_ss396]

Can anyone tell me what the significance was/is of the three
colors seen on many NOS SHP parts? I'm referring to the
white, green, and purple colors seen on many rods, cranks, blocks, etc...

Nuch

[69 Post Sedan]

I believe that the workers would make a mark when their process was done. Either that or to identify certain parts.

[The Dude]

When parts left a certain dept. the end packout guy or last man put a dab of paint to show he checked it before it left. The colors differed by shift, days may use purple and afternoons may have used yellow.

A lot of times marks were made to show a part had been thru a process already.

And certain models of parts get dabs to quickly I.D. them.

[al8apex]

not exactly ...

the parts are color coded by application

ie "pink" rods, those were the special performance ones

the colors differentiated the applications, ie HD, performance, passenger, etc

When I worked at Pontiac in the very early 70's all the "good" stuff carried purple dabs

[69SSZL1]

I know what you are talking about. All the ZL-1 and L-88 stuff has the Purple, Green, White color codes. I saw an NOS hipo big block with these as well. Here is ZL-1(L-88) crank and rod:

[nuch_ss396]

[ QUOTE ]
I know what you are talking about. All the ZL-1 and L-88 stuff has the Purple, Green, White color codes. I saw an NOS hipo big block with these as well. Here is ZL-1(L-88) crank and rod:



[/ QUOTE ]

This is exactly what I am referring to. So were the colors
shift or process signifiers?

Nuch

[69SSZL1]

I'm sure they were inspection marks. Each color signified a completed inspection. The special colors do match for SHP, I don't know why. But whenever I see those colors I get wood!

[The Dude]

[ QUOTE ]
not exactly ...

the parts are color coded by application

ie "pink" rods, those were the special performance ones

the colors differentiated the applications, ie HD, performance, passenger, etc

When I worked at Pontiac in the very early 70's all the "good" stuff carried purple dabs

[/ QUOTE ]

I think what you just said is what I what myself and the other guy said, certain models got certain colors.

I ran packout for many years and each front pump that left the dept had a green mark that I had to put on it. Afternoons used yellow. This is still done today. An automatic transmission will have a ton of paint marks inside it.

[al8apex]

not exactly

a hi-po axle shaft has purple paint on it, the lo-po (is that a word) ones had a different color (can't remember, only remembered the "good" stuff colors), nothing to do with what shift, it was application based, not shift or employee

[The Dude]

Different model of part, low po and high po. What I said and what the guy above me said.

Not all marks are for models, some are for shift and some are a check mark meaning the part passed a certification point.