when my 305 is running it has about 60 psi in all the cyliner
it depends if you have a 305 or 305ho , 305 8:1 compression cupped cylinders 305ho has 9:1 compression with valve cut pistons
Tire psi? Engine compression psi? Radiator cap psi? Engine oil pressure psi?
Yes they will, but 305 heads have a smaller combustion chamber so it may raise your compression ratio.
8.3:1 is stock
You may have compression on any cylinder where the valves happen to be closed, but you will not have compression on all cylinders. 1991 Sable does not have a 305 engine.
compression test or leak-down test.
Higher compression ration which can increase hp. I installed 49cc heads on my 305 instead of the 64cc and got a higher compression ration and a fair amount of hp gain.
The number 1 cylinder on the Chevy 305 is the front cylinder on the drivers side. The drivers side is odd numbers, the passenger side is even.
Driver's side, front.
In the cylinder heads.
Front driver side.
The bore and stroke is---3.740 bore and 3.480 stroke. STOCK 305