Disassembly of a 69 Z/28 DZ Three Oh Blew Engine

[SuperNovaSS]

Here is the oil pan, one side has multiple dents from something trying to escape and there is only one spot on the other side:










While the little oil that is the pan is draining, let's check out the top end:












Hmmmmm, where did those pushrods disappear to? Let's check under the intake:




No, I did not remove that lifter. If that is not strange enough, where are the 2 missing lifters????

Oh, there is one. I wonder how that got down there?






The oil is still draining. We might as well pull the heads. I want to see if they are 2.02/1.60 valves anyway.






Looks dirty but not bad at first glance. I don't see any stampings on the pistons. Could this possibly be standard bore?

One piston looks to be sitting a bit high and has a nick in it.



Let's check the head on that cylinder:




The good news is the heads are factory high performance units with 2.02/1.60 valves and no modifications like porting or screw in studs. The bad new is one intake valve is bent from that piston. Not a big deal.

OK, the oil has stopped draining out of the pan. We know there is carnage down there. Want to check it out? I do.









Hey, there is the missing pushrod! Amazingly, it is still straight!

I don't think we can straighten the windage tray. But we did find the other lifter. Notice anything missing from the crankshaft?