has anyone here used rhs heads on a 351w or a stroked 351, mainly a 408w? the rhs 205cc heads is what im really inquiring about. as opposed to trickflow tw 170cc heads. for a street car. thanks

 

I just installed RHS 200 heads on my 351 to drop compression for
up coming boost.

Good heads. We flow tested them before install and found the factory valve seats to be a bit lacking
After we did a fresh 3 angle valve job on them and reassembled them, they were great.

did some checking around and it's a known that factory valve seats machining is kinda crappy.