Number varies but here goes...
Magnum =8
Ram 3500 = 6
Race truck = 8
CJ5 =4
37 Buick = 8
Jr/FC =1
'31 Chevy truck =6
Int LPX = 8
59 Chevy panel = 6
74 Vega = 8
2 Gen sets =4
Lawn mower = 2
Weed eater 1
Lawn Vac 1
Total on the property (all running, installed - implement/automotive/racing) engines = 67

Add 24 for running Engines on stands
(555 BBC - Blower motor)
(526 Hemi Spare Race truck motor)
(383 SBC in waiting for install)
466 Frame cut waiting to go in LPX =6

Non runners (various reasons)
7.3 Corn Binder =8
318 Mopar = 8
528 Hemi for Valiant- disassembled for repair = 8
Onan gen set = 2

Think that's about everything...