It could be any of the following:
* A sticking or burned valve, * A damaged head gasket * A damaged or worn piston If it's a damaged or worn piston there should be quite a bit of "blowby", meaning that there will be pressure inside the crankcase when the engine is running.
If the head gasket is damaged there should be a leak into the crankcase (blowby again, or a leak into the water jacket, in which case you won't be able to keep coolant in the radiator.
If it's a sticking valve or just about anything else that causes poor compression, you can perform a "leak-down" test to find out where the compression is leaking. Since you know it's the #5 cylinder, perform the leak down test on that cylinder and see where it's leaking... then you'll know.
A compression test will determine which cylinder(s) are at fault.
8:1.
A compression test.
The cylinder that you are checking must have the piston travel up and down 4 times are more.
the firing order for a small block Chevy 350 is 18436572
4.000x3.750 with 8.5:1 compression
yes, you can use those heads. the block does have small changes to it but no problm will occur
65 ft./lbs. But if it's a 64, it's not a 350.
torque specs 350 Chevy heads65 lbs
A Chevrolet 350 small-block engine typically weighs around 435 pounds. This weight includes all components of the engine, such as the block, cylinder heads, intake manifold, and exhaust manifolds.
there is no such thing as a big block 350
There is no such thing as a big block 350.