Z28 factory markings

[X77Z28MP]

I thought I would share some photos of my 69Z I’m rebuilding my born with drive train and after cleaning up the block ,suspension, I found some interesting factory markings. As more parts are cleaned I’ll post more photos.

[firstgenaddict]

I can make out the DZ which is quite typical to see scrawled on the side of the block...

FWIW one of the corvette parts houses has freeze plugs without anything stamped in the centers (like originals) same with the correct intake manifold gaskets with the "tab".

[X77Z28MP]

Thanks for responding
Do you have the name of supply house for the freeze plugs
Thanks Morgan

[X77Z28MP]

More pictures

[Steve Shauger]

Great detail markings... keep them coming and thanks for sharing!!!

[169indy]

Sweet- ROMEX

[firstgenaddict]

Great detail markings... keep them coming and thanks for sharing!!!

X2

Great details!

You can see how thin the original engine paint was(the bright orange is a later addition) it really doesn't fill the grain of the casting - IT allows the heat to dissipate without blistering the paint.
I love the dripping yellow down the side of the pitman arm - I use an eyedropper to replicate runs like that.

Beautiful--

I responded to your pvt msg - you may see this first Corvette Central is where I last purchased my no mark freeze plugs. Another person told me that they picked some up on ebay - but they came out of Great Britain.

[X77Z28MP]

Thanks
I checked corvette central Temporarily unavailable. I’ll check eBay someone has to make these

[firstgenaddict]

Lloyd (Edgemont village) had some 1-1/4" plugs stamped out for the 472 intakes.
He could probably give an idea on the cost to manufacture 1-5/8 plugs at 100 pcs or less.

The non marked ones are available on ebay coming out of England I checked earlier.

[X77Z28MP]

More pictures

[X77Z28MP]

More

[X77Z28MP]

Block and head markings

[rlw68]

Here's a Z-specific marking I discovered today while working on my dash :biggthumpup:


203743

Certify this

[X77Z28MP]

More history

[X77Z28MP]

BU rear

[302moz]

Paragon has the freeze plugs . Just installed them in a z I am rebuilding.

[NorCam]

Corvette Central carries the correct intake gaskets to match the exact intake profile of the Winters 472 intake. Once installed there is no extra gasket material visible around the intake valley and looks 100% correct.

Click this link to visit their website. (https://www.corvettecentral.com/c3-68-82/fuel-system/intake-manifold/69-72-350-intake-manifold-gaskets-353107?returnurl=%2fsearch%3fcurrentsearchcategory id%3d%26q%3dintake%2bgaskets%26count%3d54)

[Edgemontvillage]

Lloyd (Edgemont village) had some 1-1/4" plugs stamped out for the 472 intakes.
He could probably give an idea on the cost to manufacture 1-5/8 plugs at 100 pcs or less.

The non marked ones are available on ebay coming out of England I checked earlier.

Thanks James, the minimum order when I had a run of intake plugs stamped was 300....I have plenty (aluminum intake filler plugs) still available if anyone is in need.

Lloyd

[ALLZS]

Dz block

[ALLZS]

Dz block

[Edgemontvillage]

Dz block

RG is the chalk marking read upside down that often appears on the right and left side fender extensions to denote Rally Sport Z/28

[rlw68]

My inner fenders were both marked with an X. Maybe this was needed because of the front Z/28 emblem holes ? :dunno:

211557

[William]

The thinking was that the code marked on the fender extensions correlated to the code in box #103 FENDER PIERCING on the BBC. Thus far, not borne out. BBC copy for a Norwood Z/28-RS box #103 is marked YB.. Box #104 EMB. is marked G. Another Z/28 is YA G.

We would need many Z/28 BBCs to sort this out. Not going to happen.

[Keith Seymore]

My inner fenders were both marked with an X. Maybe this was needed because of the front Z/28 emblem holes ? :dunno:

211557

"X" sometimes means "I acknowledge this part", or "I already did this one".

Like a check mark.

When working on the assembly line it can be difficult to remember where you are at, particularly if the line is moving slowly, stopping/starting, or before and after breaks.

K

[Edgemontvillage]

The thinking was that the code marked on the fender extensions correlated to the code in box #103 FENDER PIERCING on the BBC. Thus far, not borne out. BBC copy for a Norwood Z/28-RS box #103 is marked YB.. Box #104 EMB. is marked G. Another Z/28 is YA G.

We would need many Z/28 BBCs to sort this out. Not going to happen.

From original cars the commonly seen convention for fender extension chalk markings is:

G: Z28 non Style Trim
GM: Z28 w/ Style Trim
RG or GR: Z28 w/Rally Sport
427: Copo non Style Trim
427M: Copo w/Style Trim
6R: 396 w/Rally Sport

[mhm1966]

Is chalk used or a wax crayon?

[Keith Seymore]

Wax crayon. Like a tire marker.

K

[Kurt S]

From original cars the commonly seen convention for fender extension chalk markings is:

G: Z28 non Style Trim
GM: Z28 w/ Style Trim
RG or GR: Z28 w/Rally Sport
427: Copo non Style Trim
427M: Copo w/Style Trim
6R: 396 w/Rally Sport

It mostly makes sense.
G is the emblem code for Z28.
R is RS.
6 is 396. (wonder if that's actually an E)
427 = no holes. :)

[X77Z28MP]

Wire harness tags

[the427king]

Looking good Morgan. Glad to see my old vietnam car has a great caretaker ..9a20 distributor in a 09e car and a 7k tach....they said it cant be ,the original owner verified the car never had a tach or dist swap....

[X77Z28MP]

Great piece of history The car was well taken care of from the previous owners I’m just so happy that you gave me the opportunity to purchase it from you thanks again Chuck

[Mr70]

You see this? https://www.ebay.com/itm/185260611296

[enio45]

Great piece of history The car was well taken care of from the previous owners I’m just so happy that you gave me the opportunity to purchase it from you thanks again Chuck

I loved that car - white one correct?

[firstgenaddict]

Great job of documenting the car... keep them coming!

[X77Z28MP]

I loved that car - white one correct?
Yes dover white vietnam car

[X77Z28MP]

More markings just found

[X77Z28MP]

Just finished having my rear end rebuilt took some pictures of factory marks, here we go

[Rsconv68]

Column shift?

[X77Z28MP]

69Z Vietnam survivor car

[HuggerSS]

“MO” on both sides of my 68 Z and a “N” or “Z” on back of both of my heads.

[X77Z28MP]

Love finding those markings