150 LBS. per cylinder. If you hace more then 15 LBS. difference between any cylinders the engine will idle rough and not run good.
1500
120
My truck runs about 140 psi, but was rebilt recently. 120psi is normal for a truck with normal wear.
Need to know the year.
Compression ratio on a 1974 Chevy 350 in a Nova was 8.5:1.
The compression ratio of a 350 Chevy engine usually ranges from 8.0 and 9.0 to 1. This provides a good balance of fuel economy and power.
8.5 to 1 compression is factory stock.
10.5-1
About 8.5 to 1
Remove all the spark plugs and turn the engine over by hand. Place your thumb over the #1 plug hole and you will feel the pressure on the compression stroke. A compression gage will also tell you when you are on the compression stroke.
Need to know the year. Please ask your question again with that info.Thank you NEUTZ.
then youre running about 8.5:1 compression
I have a 1974 Chevy truck with the 350 V8 and the engine is in good shape. At idle the oil pressure is 35-40 PSI, at driving speed it goes up to about 50 PSI. Hope this helps.
150 psi should not vary by more than 10 psi between cylinders