What does a KB 237 mean on the pistons, I took the 440 apart and took the block in to get boiled and I was looking at the pistons and it said on the side KB 237

 

That is the model # of the piston !! Keith Black 237

 

TVLynn I striped down the motor to the block and and took it to a place where they are gonna boil it and clean as well as the heads pistons and ect. Being that I did not know anything about the car when I bought it or the motor what information do I need to get from the machine shop where its at the will be help full, They can measure anything they told me.

 

Go to the Keith Black web site and there you will find all the specs on the KB 237 piston. If you are re using those pistons, start by determining what you want your final C/Ratio to be, and work from there.

 

Also they should be stamped STD .020 .030 depending on size The machinist will tell you what size parts to get

 

I looked on the KB website, and that piston has a Compression Height of 2.067 inches. Which means that on a block that is at factory specs, the piston will be .015 inch below deck. That is good for quench and squish, but you need to watch your C/R.