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Hi VB5869,
All I can offer is that the 68-69 Tech Guide only mentions that the tabs are welded to the timing cover, are rectangular with a triangular extension from the base attaching to the timing cover. There is a 'Y' shaped bead on that extension.
There's no mention of variations for C.I. or H.P.. But since the 350HP uses a 8" damper and the 300HP a 6" damper I'd think the covers aren't interchangable and the tab might vary from one to the other since it's welded on.
Regards,
Alan
Hi VB5869,
All I can offer is that the 68-69 Tech Guide only mentions that the tabs are welded to the timing cover, are rectangular with a triangular extension from the base attaching to the timing cover. There is a 'Y' shaped bead on that extension.
There's no mention of variations for C.I. or H.P.. But since the 350HP uses a 8" damper and the 300HP a 6" damper I'd think the covers aren't interchangable and the tab might vary from one to the other since it's welded on.
Regards,
Alan
Thanks Alan- I agree with your opinion. I was hoping some of the parts hounds around here might have comparative photos...
The tabs are the only difference. I've cut tabs off several so I could use a bigger dampner. GM makes bolt on tabs. THe only ones that are a problem are the late dampners that have the keyway and the "0" mark 10* apart. They're designed to be seen by going behind the water pump with the timing light.