I have lash caps on my 540 to get the geometry right (Indy 440-1). I am hoping that one positive with those will be no burr on the valve stem when it is time to disassemble. We'll see.
On my new Indy's on the 416 with the 1.6 Hughes SS rockers it took a shim under the shaft to get the pattern right.
What is the downside to caps? Does oil get under them wnen the lash opens up and close up the lash?
