1CAMWNDR

iTrader: (21)

Say for instance you have a 226° .570" / 230° .573" XE cam. Would there be any piston to vlave clearance difference between a 114° + 4°, 112° + 4°, 110° + 4° and 2°, or a 108° +0°? I don't think I have seen any discussion on this.
I know the XE-R and LSK lobes would have less clearance since they are so much more aggressive; but the same question applies to all cam lobes. It would seem to me that the difference would be minimal if any.

LS1curious

yes they do.

1CAMWNDR

iTrader: (21)

OK. How? Tighter LSA = less or more clearance??

JPH

iTrader: (2)

less.

MPHmotorsports

iTrader: (18)

That cam would easily fit with any of those combo's. LSA does affect the P/V clearence, even more so then lift does.
Duration is the most important.

1CAMWNDR

iTrader: (21)

Very interesting. My cam is the 226°/230° XE on a 109° + 0° (109° ICL). Even with the 2.02" intake valve, .040" head gaskets, and .030" mill I didn't think I would have any problem, but I never knew what the LSA would do for clearance.

PREDATOR-Z

Tighter LSA> less valve clearance margin (relative to duration used)
Advance in grind reduces margin even more on intake side, while retard on exhaust side.