I have the vacuum pump adapter/gear from an IO540C4B5 that I would like to install on a friend's O360A1A so he can install the B&C standby alternator on his -7A------ is this the same part?
I have the vacuum pump adapter/gear from an IO540C4B5 that I would like to install on a friend's O360A1A so he can install the B&C standby alternator on his -7A------ is this the same part?
No - I had this problem when I was building my engine - your adapter will be about 1/8" too long for the B&C alternator. It apparently doesn't matter on the vacuum pump that would go on there, and sometimes you'll find those adapters mixed on engines for that reason, but it does matter for the B&C alternator. I had to get mine changed when I found out I had the 540 adapter on my 360.