your number one cylinder is on the front driverside of the engine it is also cast into the stock intake of most all V8's
If it's just one cylinder it usually indicates worn or stick rings, cracked piston or a serious valve stem seal problem.
Drivers side, first one from front.
Could be, Out of adjustment Worn camshaft Worn lifters Worn pushrods Worn rockers All of the above.
The 305 is a small black Chevy in the gmc truck. So yes it has a right and left bank = 2 heads one on the right and one on the left...
There is no information on the internet about what the special feature of the Chevy 305 engine is, in fact, the Chevy 305 and 350 are interchangeable, one is just an older model.
That would be the 1st cylinder on the drivers side head up front.
which is cylinder number two on gmc envoy 5.3 litre
Number one cylinder is the first one on the left or passenger side if you are standing in front of the vehicle.
Driver side front cylinder.
first run number one cylinder to top dead center on the compression stroke. then set the distributer till the firing tip on the roder is pointing directly at the number 1 spark plug wire on the distributer cap.
If you have a 4 cylinder engine, the number one cylinder is the one closest to the front of the truck. If you have a 6 cylinder, it the on the driver side closest to the front of the truck
The TDC is when the number one cylinder is at the top or top dead center of the compression.