Re: Roller cams, cons.....pros???
 

Kurt, sorry to hear about your engine woes... Just my opinion, But I have no qualms about the roller cams, they just do require a little more time & $$ to do properly... The flat tappet stuff still works well for a lot of the moderate stuff. I too agree the spraybar solution in the lifter valley is a good idea if one is overly concerned about lack of lubrication there... But again that all adds to the cost, although its still easier & cheaper to add that then to redo the thing later... :bunny: jamie

Re: Roller cams, cons.....pros???
 

cstraub or anyone else,
Why do roller lifters take such a beating at low RPM? Are you saying it is a lack of oil pressure, or what is the reason?

Re: Roller cams, cons.....pros???
 

Anyone know of the correct roller cam replacement for a 575 SCi stock flat tappet.

Re: Roller cams, cons.....pros???
 

Cam lobes receive a lot of their lubrication from oil being splashed of the reciprocating assembly.

Add in high spring psi's and then typical windage trays, crank scrapers, etc,etc for better high rpm performance and the solid roller's are subject to a lot of abuse from lack of oiling.

Street mechanical (solid) rollers use gentler profiles and thus lower spring psi. The axle/wheel combo really likes this better during low speed low oil situation then the high spring psi combos.

But.............solid rollers are now available with pressurized oiling and companies like Keith Eickert are making oil sprayers aimed at this area. These make life much easier. Also, rev kits supposedly help by holding roller against lobe, not totally sure on this one...remember there is lash involved with rollers.