Max lift on stock guides and seals?

Here are some numbers for anyone interested. These are from stock, standard LA valve sizes, using 4 groove exhaust and 2 groove intake valves (typical layout) on a 302 head. These are NOT stock, 302 valves. The locks are regular LA type/ layout in the grooves and total length. The 302 valves have a different, lock groove layout.

This info would be good for anybody attempting to adapt 302 heads on an LA to an aftermarket cam, with new valves on stock, uncut valve seats that only need lapping;

These dimensions are from the non rotater type, stock, .394" thick LA retainers at the inner/ lowest step to factory type guide seals, where lift clearance is critical-

Intake; .482"
Exhaust; .492"

These are to the factory type seals. Not the guides.

This gives an installed spring height from the floor to retainer as follows, again, with stock .394" LA retainers of 1.638" This may be a few thousandths tight, as it was difficult for me to get a good reading and will likely fall on the locks further once installed. I'll recheck height when I get the springs in.

Just for the hell of it, I measured the thickness of the rotaters that came on the 302's and they are up at .491", which requires a short spring.

The 302 intake retainers are skinny. Those were at .383"