TAC Tech => Number Crunching => Topic started by: Wallington on August 14, 2024, 10:15:36 AM

Title: 77 to 78 TA shaker changeover
Post by: Wallington on August 14, 2024, 10:15:36 AM
Here's a notice with date and even models at the point of when the low-profile '77' TA shaker was changed for the larger '78' shaker. (still in 77 model though).

(https://live.staticflickr.com/65535/53923030809_ac29578fb6_k.jpg) (https://flic.kr/p/2q9ZCpK)1977-78 Trans Am shaker hood revision notice (https://flic.kr/p/2q9ZCpK) by Ben (https://www.flickr.com/photos/196419001@N03/), on Flickr
Title: Re: 77 to 78 TA shaker changeover
Post by: FormTA on August 14, 2024, 12:03:15 PM


Wow, that is cool info for the 77 guys. You really amaze me with the info you find, even being on the other side of the world. Though the interweb sure helps I'm sure.

Title: Re: 77 to 78 TA shaker changeover
Post by: b_hill_86 on August 14, 2024, 02:34:31 PM
Yea that’s definitely cool. Something I’d only known about in recent years
Title: Re: 77 to 78 TA shaker changeover
Post by: Wallington on August 14, 2024, 07:49:15 PM
Just sorting through some old Bulletins and Manuals. Lots of trivia and info but not always of interest to most. Some things like these don't pop up elsewhere though. This is from the 1977 Dealer Technical Bulletin. A few 77 guys need a copy of this in their glovebox at shows when told they have the wrong shaker!
Title: Re: 77 to 78 TA shaker changeover
Post by: Wallington on July 14, 2026, 09:46:43 AM
Another thing to note is apart from the new, taller shaker assembly for mid-77, they also changed the shaker to hood seal. This needs to be considered when ordering the typical OER seal off the shelf and wondering why it barely seals or even squashes, and not just because it's OER.
Title: Re: 77 to 78 TA shaker changeover
Post by: roadking77 on July 14, 2026, 04:25:11 PM
Thanks for posting this. I always thought the taller shaker came out mid year, long before the actual issue date.