I was looking for cylinder heads upon my 68' 340 rebuild. Are the comp cam beehive springs durable enough for a lunati 60403 cam? Are these bronze valve guides? Regardless price looks great.
I need spec's on cam but these are what MadDart used with his solid Hughes cam [email protected] with .610 lift roughly.
They'll work in the 6800rpm range with most any hyd., hyd. roller, or solid FT cam out there.
Guides are honed from the original guide hole so they are castiron, not guides installed.