Speedmaster 1.6 rockers

cannucky said
I suspect they are not the same as PRW because they have a different hold down . Most of the failures I've heard about with the PRW are to do with the shafts themselves. Early on they didn't have a hard enough shaft and I ate a pair of them which caused the bushings to go , lucky for me mine came from a reputable builder with a good relationship with PRW because I was sent a whole new setup from PRW .The new set are indeed stamped with the PRW logo and I will be installing a geometry correction kit as soon as it arrives which will increase the longevity .
PS I put 25k miles on a 520hp sb stroker before mine were toast and if you actually take the time to read what B3 has to say about roller rockers you will find these have better geometry out of the box than several of the high doller units .

Without spending several hours on the phone, I'd bet those rockers all come off the same production line. Just like connections rods, there just isn't that many companies making the stuff. Obviously, the hold downs are much more simple to make. But I'd bet the rockers are the same exact rockers as the PRW rockers.

I'm pretty sure that rocker will live with 280 on the seat fairly well if the geometry is correct. I've run ductile iron rockers with 300 on the seat. They don't break either.