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.
4.000x3.750 with 8.5:1 compression
the firing order for a small block Chevy 350 is 18436572
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
There is no such thing as a big block 350.
there is no such thing as a big block 350
They are both the same engines. You refer to a long block as being a compleat engine assy. 350 small block is what it means. It's a 350 and that is called a small block.