[ckaram68]

Hi all, first post. Looking at a 78 TA. 4-speed car. PHS document from dealer doesn't show W72. 6.6 T/A on shaker but we all understand that could have been added.

If a true W72 would it always appear on the invoice sheet? Do not have the build sheet document, unfortunately, and car isn't nearby to check numbers off block, trans, etc.

Just wondering if the dealer invoices were an exact science or not.

Thanks for the help.

[Trevor78]

Do they claim it to be W72 or has any features that make you think it could be? Does it have WS6 upgraded suspension?

In early '78 they were part of the same package, but I don't recall if both were still listed or simply required the other. The engine specs and details would confirm what it was, but of course, it would also need to be the original engine or type. Perhaps the seller can provide basics such as block number and heads, even as a guideline.

[ckaram68]

Additional searches and I think my question is answered. My dealer invoice does indeed list the WS6 package for $151. This matches info below. If anyone has anything else to add, please do!

Originally Posted by John Witzke
68ragtop,

"The WS6 Trans Ams Special Performance Package did include the W72 engine at the very beginning og the 1978 model year. I have confirmed as early as Oct 1977 you could order a W72 Trans Am minus the WS6 package even though a memo from Pontiac dated Feb 22 1978 explains the seperation of the two packages.

In Feb 1978 dealers could no longer order the W72 engine with automatic transmission as stock (dealer inventory) orders. The deadline for customer orders was March 20 1978. The latest build date I have recorded for a W72 automatic car is first week May 1978 which would be in line with the cut off date.

Production of the Y88 Trans Ams began Jan 1978.

I believe you are refering to the window sticker or invoice when you mention the pricing. The build sheet just list options, etc with no pricing. A W72 Y82, Y84 or Y88 car produced with WS6 would be $151.00. Some window stickers or invoices may list the options separate, W72 $75.00 and WS6 $76.00. Or they may just say WS6 Trans Am Special Performance Package $151.00. I have a 1978 W72 Y82 invoice showing a ship date of 2/10/78 (1/23/78 build date) with only the $151.00 WS6 option listed. In comparison I have a build sheet for a base 1978 W72 Trans Am with WS6, build date 2/10/78 and the window sticker only list the WS6 option $324.00.

A non W72 special edition car with WS6 would be $76.00.

1978 W72 cars were produced at both Norwood OH and Van Nuys CA assembly plants.

Hope this helps.

John Witzke
POCI Tech Advisor
1977-79 W72 Performance Package
www.78ta.com/w72.htm"

[ckaram68]

Originally Posted by Trevor78

Do they claim it to be W72 or has any features that make you think it could be? Does it have WS6 upgraded suspension?

In early '78 they were part of the same package, but I don't recall if both were still listed or simply required the other. The engine specs and details would confirm what it was, but of course, it would also need to be the original engine or type. Perhaps the seller can provide basics such as block number and heads, even as a guideline.

Yes, it does have the WS6 package. Was built in March of 78. Thanks Trevor78!

[Trevor78]

Yep, you found the combined option/price thing I was getting at. Nice find.

[highway star]

15x8 wheels? Oval snorkel on air cleaner?

[ckaram68]

Originally Posted by highway star

15x8 wheels? Oval snorkel on air cleaner?

Not sure on wheels yet but yes to oval snorkel! Thank you.

[68ragtop]

Funny, apparently a copy & paste from a post I must have made decades ago?