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900 crank horsepower is a safe "new" boss 302 number
There is no such thing as a 1972 Boss 302 mustang. They were made in 1969 and 1970. They had 290 horsepower but it was (according to some at Ford) under-rated.
from 2005 to2009 mustang boss is bring 320 hp
220 horsepower for the high output 302 in a 1988 Ford Mustang
225 horsepower
it comes with a 302 ,360 ,411 ,365 horsepower engine
215 horsepower ford 302 v8
A new 2012 Mustang Boss 302 retails for about $41000, but $43000 with a Torsen and Recaro seats and $47000 with the full blown Laguna Seca package.
5000
The 1969-70 Boss 302 Mustang made 310 H.P. In 2007 Ford started selling a Boss 302 crate engine putting out 345 H.P.
210 horse
402 and 302 are the Cubic Inches of the engine, the more cubic inches the more horsepower and torque the engine produces, so to answer your question the Mustang Boss 402 would have more power