Converting my 350 to 427, already cut holes in the airbox for hoses and installed the core. Ready to attach the heater hoses but cannot find where/how to configure the control valve.

Spent an hour searching google for pics but not much turned up. Oddly I saw several BBC camaros that had no visible heater control valve, just straight hoses to/from engine and core.

Also looked through assembly manual without luck.

Thanks for any clues