well had a look this morning with a torch in the plug holes cant see a thing only the valves.
im beginning to think the only way forward is to tear the thing apart and start again!
this in itself brings other questions having never done this.
1. can i remove the sump and remove a piston but leave the heads on?
2. if i do this is the sump gasket reusable
3. should i remove the heads and inlet to see the piston and then i can measure the deck height,would the gaskets be reusable on the intake and heads?although fully assembled the engine has never been run.
wonder how much a gm crate motor is?lol.
my brain is boggled i find this all very interesting but id rather be installing it.