How do you adjust the tappits on a 350 Chevy?

Answer 1

Way too involved to post here. Purchase a repair manual for instructions and details. There is an order to set lifters according to "the book" which gives details as to which intake and exhaust valve is set. What you want to do is set each individual lifter when the camshaft is not engaging the lifter to be set. I can only assume you are refering to hydrdaulic lifters, as which these instructions pertain. Start at Top Dead Center( #1 cylinder will be all the way up with intake and exhaust lifters down). With fresh parts, apply assembly lube to the cam lobes, the entire lifter (careful not to plug the little hole where the lifter rod sets), lifter rod ends, and the areas where the rocker arm makes contact with the lifter rod and the valve stem. It is very easy to wipe out a fresh cam before oil gets to it during initial start up. If you are simply readjusting a working cam/lifter combo make sure everything is oiled well. Push the lifter down til it rests on the camshaft. If the lifter is down (about flush with block) it is ready to be set. If the lifter is up at all, wait for the next revolution. Set the lifter by slowly tightening the rocker nut and wiggling/spinning the lifter rod until the lifter rod does not freely move/spin. Turn the rocker nut another 3/4 of a turn. This will set the plunger in mid travel. Repeat for all other lifters not lifting. Now turn the crankshaft one complete revolution, and set all the other lifters. Should be able to set eight lifters each crank position.