It is approx 302 mm.
How much WHAT does it have. If you are referring to H.P. then that depends on the year and particular 302 you are asking about. There are 2 models of 302. The standard 302 and the 302 HO. The standard 302 was rated at 150 hp and 270 ft lbs. The high output was rated at 225 hp and 300 ft lbs.
As much as the dipstick tells you to.
There are 100 millimetres in a centimetre. To convert cm to mm, you multiply by 10. 30.2x10 gives you 302 millimetres.
a lot
220 horsepower for the high output 302 in a 1988 Ford Mustang
5.6 mm
280 mm
pretty much any 302, or 351 heads will fit
199
302
225