Don't know what the letters stand for, but I found that suffix here: http://www.nastyz28.com/gm-chevy-codes/chevy-engine-codes-suffix-6.php It shows on the chart what that engine was originally used for.
I recently built a engine test stand for a 402ci Chevy engine. The distance between the motor mounts is 16 1/2 inches center to center. This should be true for small block and big block engines.
4 bolts should be holding the engine to the engine stand.
Engine size
The engine stand bolts up to where the transmission bolts to the back of the engine.
large displacement small block
it stands for BACK-UP LAMP
454 is total volume in cubic inches for all cylinders together. Chevy = Chevrolet. The brand.
It means it was built in the Tonawanda, Ny plant on June, 25th. The PPh is the horsepower rating and cubic inch but I don't know exactly which one the PPH is.
If you stand in front of the engine, It will be the second plug from the front on the left side of engine.
You have to degree the motor, with a degreeing wheel, which requires a major teardown, unless it is on the stand.
Stands for a 3.5 liter engine, basically just denotes the size of the engine. Stands for a 3.5 liter engine, basically just denotes the size of the engine.