Ok, so I got an old red 253 to rego up my vb commodore. Stripped it down and rebuilt. There was a slight amount of putting on some lifters and can, nothing too bad at all. I polished them up and put them back (I say this as I think it maybe the issue, but let’s continue). Throw it back in, degree cam, line up TDC on compression stroke, line msd dizzy to number one cylinder and everything else is hooked up (I rebuilt the quadrajet and fuel is coming out how it’s supposed to). Turn over and turns over well but doesn’t even attempt to fire. Pull plugs and check spark, plugs and wire and coil all working with good spark. Check leads are going to the correct plug about four times (made this mistake before). I’ve also checked the dissy isn’t 180 out. Check compression. It’s a bit low with only number one really low. I think it’s a cold, fresh engine, that’ll come up. I throw a teaspoon of oil in each cylinder and it does come up a bit but won’t start. I’ve been moving dissy slightly with each option. Throw some ‘Start ya Bastard’ in and it sputters a few times but won’t start. Repeat this a couple of times and same result (advance dissy a bit with each try and then back, same result). It almost started with a bit more starter spray than I was using before. I’ve had the rocker covers off and watched and all rockers moving, although some aren’t moving that much. I’m thinking the original cam was worn down too much and is now not opening the valves enough. So before I resort to a new cam and lifters, any ideas?