Piston pressure numbers help
 

Hi guys,
I did a engine pressure test and this is the finding.
https://ibb.co/cLRutb

Do you guys think this is acceptable. The dealership said it is OK ?

Thanks Guys

The two in the 150s are weak.

Hi Billy,
What do you recommend. Piston ring change?
Aftermarket piston .
I have no clue what to do
:)

That's a pretty big variance between top and low pressures. Outside of acceptable range I would think.

So guys your recommendation
I have the engine out aside
https://ibb.co/dgJVYb

You need to disassemble unfortunately. The heads have to be pulled and the pan dropped and the pistons pulled. Could be ring failure, ringland failure, or something else entirely..

I would say that the ring lands are broken. Wiseco makes a drop in piston set for the LT1. I pull the motor to do this job.

I did find the piston
Wiseco 6.2L LT1 -.6cc Stock-Replacement Drop-In Pistons for Stock Connecting Rods, No Balancing Required.
It this the piston

Yes