Help with 340 compression + cam change

Thanks for the responses!!

Unfortunately the one thing I don’t know is where the pistons sit in the cylinder.

I may check static compression with a second gauge, but I’ve always gotten a reading close to the 160#s. If a another gauge gives me a different number I’ll report back.

Motor has about 65,000 miles on it. (Includes cross country trips, lots of runs down 1/8 and 1/4 mile, a couple of loops around a nascar oval, and some SCCA autocross) so I’m happy the readings are still very even.

I have to change the timing cover due to corrosion and an external coolant leak, so thought it would be good time to consider whether I’d want to do a cam change.