Can anyone identify these rockers?

[oldcarnut]

Pushrods are big too. They're in the engine I'll be using until the new one is built.  I swapped it out of another car but I got no idea what's been done to it inside other than it runs good, has a nice sounding cam, and had some nice BPS brackets, pulley's and accessories. .  Just trying to get a handle on it.  Heads were 902's

[c00nhunterjoe]

Looks like the old crane ductile adjustables. Bushed shafts, no roller tip.

[oldcarnut]

Thanks.   I have a set of their gold alum for my future motor.  Is one any better than the other?

[firefighter3931]

The Ductile iron rockers are great....I really like them on flat tappet (hyd/solid) with valve lifts under .600 and spring loads under 400lbs. If you have more lift and higher spring pressures (solid roller cam) then it's time to consider a roller rocker. 


Ron