My old school 340 upgrades and results.

I borrowed some snap Guages and got the same readings I had when reading with a dial caliper. I am sure they are more accurate but in this case it came out the same. I installed a ultralight spring I made from some wire and measured valve lift at the valve today with my dial indicator. .488 was my measured lift. All this together has my coil bind clearance at least .050 on all cylinders some more due to variances in installed height. I then installed my 273 rocker arms and custom pushrods I had from an old motor I built and took apart 20 years ago. I brought each cylinder to TDC compression stroke and adjusted the lash to 0 plus 3/4 of a turn. Had some honey dos to take care of so I will put the valve covers on in the morning and fire it. Here is a pic of the rocker set up.