Hi David, and
WELCOME ABOARD ! .
The 36 is a great boat, built more robust than some of the previous models, and intended to be out busting waves. It's strictly heavy duty all the way, and unless they hit something like a container that fell off a container ship, that hull will be solid. You can almost bank on it. If it has blisters I will be surprised, and it would be a signal the boat has been ill maintained. Those hulls are awesome!
Here is a link to some info to get you started!
http://www.network54.com/Forum/424840/thread/1141569809/1978+commander+brochure
Also, from our archives..............................the fuel burn you requested...........
For the big block GM, from the Chris Craft owners manual:
2400 RPM 8.7 GPH x 2 = 17.4 GPH
2800 RPM 11.4 GPH X 2 = 22.8 GPH
3200 RPM 14.7 GPH X 2 = 29.4 GPH
3600 RPM 18.6 GPH X 2 = 37.2 GPH
4000 RPM 22.8 GPH X 2 = 45.6 GPH
4200 RPM 25.2 GPH X 2 = 50.4 GPH
Note: Chart based on engine loaded for max RPM of 4200
Rochester Quads,
Hope that helps, send photos of the boat. As for the rot under the window, ahh, that will buff out, lol. Be real thankful the entire hull is not made of wood!
Regards,
Paul