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I am looking for opinions on how these look?

I just got done with a top end rebuild on a '98 ZL 500 to FRESHEN up the motor , 4100 miles on the motor.

This is what the pistons looked like before :

And this is what the head looked like before :

And on the crank I noticed a BLUE spot, looks like it was heated up with a torch, is this normal ?

The other side of the crank didn't have any spots like this.


How do the pistons/ head look ?

Does it look like the motor is burning fine ?

To RICH or to LEAN ?

The 1st picture looks like the rings are blowing by ?

The last picture shows the blueing on the crankshaft, is this normal ?

Do the pistons look like they have the correct WASH ?
 

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