Quote:
Originally Posted by 100%Chevy
There are 3 talldeck engines-366,427 and 454.
I have a 427.
The easiest way for me to tell them from a regular big block is the distance from the top water pump mounting bolt hole to the surface of the blocks deck.
It's about 3/8" on a tall deck and even on a regular big block.
The actual difference is .4" as measured from the center of the crank to the top of the deck.
You can't over-rev a t.d.!(Well,you can one time!Then look for another one!)
Mike.  |
So the 454 in the 2000 and new medium duty trucks is a tall deck also???
I didn't know that......I assumed it to be a standard deck. That extra ring theory is an oldie......
Is the 495 (8.1) in Med duty trucks tall deck also???