Roller Cam Bearings?
#21
If you're starting with a round lobe core then the lobe size isn't really an issue. The only real benefit is stability and I don't think you can get too much of that in these off shore deals, especially in something high end like you're building. If the bore is already there and the 60 is in your budget, then I'd say go for it and use a babbitt bearing. What size lifter are you running? Might as well go .937 at that point.
What would be the benefit from the larger core and what if any would be the pitfalls?
#28
Banned
Larger base circle and lobe circumference. More rigid and the lobes can be ground much more precisely. Combined with the larger wheel on the lifter it reduces pressure angle and lifter side loading. No pitfalls.
#29
The other thing that's going to happen with this build is the lifter is going to be moved up higher and the oil galley for the lifters will have to be addressed with possibly bushing or cutting a groove in the lifter.
So instead of buying an $800 cam and scrapping what I have it's going to turn into $2000 before all is said and done. And again I ask myself when is enough enough?