Blow by

[z24 drag]

Found my problem

[SappySE107]

Thats pretty deep on the valve to piston contact.

[z24 drag]

Yeah this bottom end is about 6 years old ,has taken a lot of abuse …it actually sheared the camshaft dowel pin when that happened….

[SappySE107]

New motor time, hone/ring it, or rebuild it?