[Geeto1025]

The build date on my firewall plate is 2nd week of June, 67. The date stamp on the YS block says March 9, 67. I know that engine build dates predate car build date, but this seems like a long gap (Over 3 months). previous owner claims the engine is numbers matching based on him buying the car from original owner in the early 80's. I don't know how true this is, though.

I guess my question is: How long of a time gap is acceptable for a factory 67 GTO block and a GTO? I could understand a few weeks if the factory was far from the engine plant, but this seems a bit much.

My GTO was built in Baltimore.

Thanks in advance for any input. Just want to know what I have...

[gto19]

Get the PHS and on the car billing history will be a engine unit number. It should match the number stamped on the front of the block by the YS stamp.

My motor is within three weeks of the build plate on my firewall

[Geeto1025]

My friend told me the same thing. We looked at the PHS documents I ordered and don't see an engine unit number. I think I read somewhere that they didn't always include this on the billing history in 67? Maybe I'm not looking in the right place. I'll post a picture of my PHS docs when I get home, but I'm fairly certain it doesn't have a unit number listed...

[gto19]

Here’s what it looks like

[67TIGER]

176919 is what it shows for the engine number.

[67TIGER]

Just looked a little closer and the PHS paperwork looks like WS for the engine code, not YS. Maybe I'm seeing it wrong.

[gto19]

Originally Posted by 67TIGER

Just looked a little closer and the PHS paperwork looks like WS for the engine code, not YS. Maybe I'm seeing it wrong.

Because your looking at my billing history card . I put it up for reference

[67TIGER]

Originally Posted by gto19

Because your looking at my billing history card . I put it up for reference

Sorry, I thought something wasn't right. Duh.

[Gator67]

I have a 2 month gap (A block (WS), C build date).

I would think that date block would have an EUN of something like 443,XXX...

[60sstuff]

This won’t answer your question, but this ‘67 was built at Baltimore and the EUN is shown on it’s PHS car billing history.

Hopefully yours is shown on paper and matches the front of your block.

Chris

PS, post photos of your firewall data plate and the block date code next to distributor.

[Greg Reid]

I've posted this every time this subject comes up but just for giggles, here it goes again... My build date and engine casting dates are WAY further apart than average. All of 8 months... and my VIN and EUN both match the PHS.
Engine and heads range from August to October of '67 and car build date is May 68.

[johnta1]

car build date is May 68

From the cowl tag or the PHS?

[Greg Reid]

Cowl tag. Can't remember on the PHS. Not really a big numbers guy so I'll ask, how do they differ?

[johnta1]

The cowl tag would be for when the main car was being built while the PHS could just be for when it came time to sell it?

But either one wouldn't account for the car being held offline for some problem or something like waiting on an engine? (1st one had a problem so being replaced at factory before final assembly)

[OG68]

My understanding is the PHS date is when the car rolled out the door of the factory and invoice was sent to ordering dealer.

I'm wondering if Greg's engine was pulled off the engine line for repairs or testing and then put back into stock for shipping at a later date. The VIN wouldn't be stamped until the engine was matched to a body at the assembly plant.
Easy way to check is to verify the EUN number as either late or early production. ??

[Gator67]

Originally Posted by OG68

My understanding is the PHS date is when the car rolled out the door of the factory and invoice was sent to ordering dealer.

I'm wondering if Greg's engine was pulled off the engine line for repairs or testing and then put back into stock for shipping at a later date. The VIN wouldn't be stamped until the engine was matched to a body at the assembly plant.
Easy way to check is to verify the EUN number as either late or early production. ??

No VIN stamp on engines for 67 model year. Not sure when the EUN is stamped.

[OG68]

Thats true. I was going down Greg's rabbit hole for his 68.

[Greg Reid]

Yeah, I won't go down that hole here in the '66/'67 forum and I don't want to hijack the thread, just pointing out that a gap between dates isn't necessarily and indication of non original parts.

[Cardo]

I agree. I work in the automotive industry, and 31 years ago when i hired in, the 30 year guys had hired in in the late 50's early 60's. I have been told tales by several old timers of how bad things used to be about rotating parts within the assembly plants, and sometimes even by vendors at their facilities. Several first hand recollections of parts coming in at the beginning of the model year, stuck in the back because they were the first in, and never getting used until the end of the model year. It was not uncommon occasionally for parts from the previous model year to show up line side that couldn't be used because they no longer fit the current model. All that to say it's entirely plausable for that span of time on an engine, or any other part on the car for that matter. Even today, i occasionally see stock 6 or 7 months old come through, usually covered in a half inch of dust.

[Longs]

My '67 GTO was built in Pontiac, invoice date is June 29, 1967, date on the block is June 23, 1967. Engine Unit Number is 703042.