when i bought my boat the guy was running a 425.i blew that motor up quick.
i bought a junk yard 455,rebuilt it,now i have had three succesfull seasons.
i know a 455 crank wont fit in 425.
my 425 came with C heads-do 425-455 heads interchange??????
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when i bought my boat the guy was running a 425.i blew that motor up quick.
i bought a junk yard 455,rebuilt it,now i have had three succesfull seasons.
i know a 455 crank wont fit in 425.
my 425 came with C heads-do 425-455 heads interchange??????
yes
both share the same block, just different rotating assembly.
The only thing different would be the lifter bank angle on the 425. The C heads are 455s already. 425 heads would be As and Bs.
so what your saying is the guy before me put the 425 in with 455 C heads on it??
C heads fit 425's and 455's.
Yeah, they're all about the same. My 455 has A heads on it. :D So what happened to the 425? They have forged cranks and a shorter stroke, should've been a little harder to hurt. I think the 425 has a different flywheel bolt pattern also. Just things I remember reading on Realoldspower.com.