Compression

Thanks Bryant, it´s good information. Thanks guys, it´s good to be here and learn from all of you.

 

Keep in mind, 74-76 or so had much lower compression ratio and the camshaft retarded by 4 degrees on the 302. That will lower the numbers. Not strictly on topic, but added to the generalized statement above.

An engine with 10:1 ratio will show higher on the gauge that an engine with 8:1. As mentioned above, the ones to really call for attention are the cylinders that are off by more than 20%.

 

i belive this is a stock inline 6 motor

 

Thanks for all the help