1977 W72 Trans Am
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Im working on restoring a 77 W72 t/a. for you that dont know, W72 is a GM RPO code for the 400 engine package. in 77 is was a 200hp not like the 180hp L78 400 . it was the the same engine with gm upgrades. if you had it your build sheet would read
L78 400
W72 performance package
78-79 W72 was a 220hp 400
![Name: 77TransAmbuildsheet.jpg
Views: 564
Size: 133.3 KB](https://www.gmforum.com/attachments/pontiac-168/18270d1501207725-1977-w72-trans-am-77transambuildsheet.jpg?*=a63f200437ab7a50ef32859f20fc3ba6)
sorry for the school lesson, but you never know when there will be a test![Eek](https://www.gmforum.com/gm/images/smilies/eek.gif)
pics of it before the tear down
![Name: 003-1.jpg
Views: 552
Size: 87.1 KB](https://www.gmforum.com/attachments/pontiac-168/18271d1501207725-1977-w72-trans-am-003-1.jpg?*=a63f200437ab7a50ef32859f20fc3ba6)
![Name: 008.jpg
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L78 400
W72 performance package
78-79 W72 was a 220hp 400
![Name: 77TransAmbuildsheet.jpg
Views: 564
Size: 133.3 KB](https://www.gmforum.com/attachments/pontiac-168/18270d1501207725-1977-w72-trans-am-77transambuildsheet.jpg?*=a63f200437ab7a50ef32859f20fc3ba6)
sorry for the school lesson, but you never know when there will be a test
![Eek](https://www.gmforum.com/gm/images/smilies/eek.gif)
pics of it before the tear down
![Name: 003-1.jpg
Views: 552
Size: 87.1 KB](https://www.gmforum.com/attachments/pontiac-168/18271d1501207725-1977-w72-trans-am-003-1.jpg?*=a63f200437ab7a50ef32859f20fc3ba6)
![Name: 008.jpg
Views: 673
Size: 66.7 KB](https://www.gmforum.com/attachments/pontiac-168/18272d1501207725-1977-w72-trans-am-008.jpg?*=a63f200437ab7a50ef32859f20fc3ba6)
![Name: 77W72041.jpg
Views: 509
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http://www.phoenixgraphix.com/transam/7778glu.htm