[gtofreek]

Originally Posted by Cliff R

Make absolutely sure to check the depth of the plugs, you may need to grind a little of the back to keep from blocking off the oil passages in the block. I also put a .030" hole in one of them for some additional spray on the timing set. There are no negatives from this modification and minute or so during the build.........Cliff

I used to do this until I primed an engine with the timing cover off and saw just how much oil floods out of the cam thrust plate onto the t-chain. It is a TON! Now I don't drill them anymore. Just the one in back to oil the distributor.