I'm not a newb to Jason Grey's info, been into Datsun's for 20years, in fact my 72 510 has a long rod 2.1L that I built from his write up. Just that I never came across anything that told me exactly how many links between cam sprocket mark and crankshaft mark at top dead center on this conversion since block is 3/4 " taller than L20B and cam sets at a different height also with this head. I want a number so I can double check my setup, you know one link off and you have retarded it or advanced it. I used the Z24 front cover, very small amount of aluminum welding needed. I used ARP head bolts from L20B, ground off the engine ID projection to clear header, by the way IWIS W0133-1641757 is a good substitute for the MB timing chain link. Bad Doctor Doug, does that blue page you posted have a link? I think the cracked bolt hole think has been oversold on Z24 blocks, lots of them still running over on 720 site and my 720 Z24 with cam and supercharger ( yes, supercharger) is still strong after 66K from a rebuild. I suspect overtorquing the headbolts, 55-60 ft lbs isn't much. Anyway anyone know how many links exactly?
71 Z L3.0
74 720 4X4
72 full on rally car 2.1 long rod L20B
71 510 2dr Buick V8 project
garage full of shit