Compression Test Results...

[Speed Density]

For a fresh motor, LT1 of course, what are strong numbers to have as a result of a compression test?

I found something like 180-240 is the variance but thats not accurate enough.

Anyone?

[95formula383lt1]

i had pretty much the same numbers on my 185k mile short block, 240 was on number 4 and 190 on number 2 the rest of the numbers were in between those numbers.

[tomsws6]

how can you check?

[Speed Density]

Get a compression tester.

Its a hose threaded for spark plug holes and has a gauge on it, you crank the motor over dry with the gauge in to tell you what compression your cylinders are putting out.

[Spartan7]

Record readings if you are searching for a bad cylinder and to be able to compare readings. General specs are that the lowest cylinder not be less than 70% of the highest and no cylinder less than 100 psi.

http://shbox.com/1/4th_gen_tech2.html#compression_test