This probably came about because you didn't have the pushrods into the lifters AND into the rockers--Its much more complicated (not really ) in that with a shaft rocker arm set up you don't do individual rockers/pushrods at a time but the whole bank of cylinders on one side of the engine-and at least one cylinder will be on full lift of one valve and others at least somewhere on overlap----------


You need to remove the rocker shaft assy, and place a straight edge across all the valve tips to see that they are ALL at pretty close to the same height---a few thousands difference is acceptable but nothing more---if a valve is considerably down, it is probably bent and/or seized and will need to have that head removed for repair---


If all valves are pretty much at the same height, you can do a cylinder leakage test to determine if there are any problems-- since the valves are closed, you don't have to be on top dead center but be careful around the pulleys as the engine can turn---if leakage, listen at carb and/or exhaust plus crankcase for where the air is going (crankcase can just be ear down near the manifold/cylinder head joint--------


For the cam check----------take something (a long #3 or 4 phillips screw driver?) and push the tappet down against the cam and while holding down on the driver rotate the engine to see it the lifter goes up and down--A remote starter swirch works nice but anything to cross from main battery feed on the starter solenoid to the start position(small wire) will do to rotate engine--If both lifters go up and down a reasonable amount I wouldn't worry about the cam ------If you have a way of measureing the amount it would be nice and you could compare lift on all of them on that side----


As you install the rocker shaft assy you must watch to see that all the pushrod tips and rocker tips stay in proper contact as you tighten down on the bolts----just start the bolts and then tip all the rockers to the pushrods and with careful attention they should stay in place as you tighten the bolts---at least one set will be on the nose of cam and will cause those valves to be opened as you pull the shafts down




And the secret numbe r for a cam back in 428cj days----------C8AZ-6250-D--------