I want to lower the compression on my Big Block from 10.5 : 1, not looking to get to a specific number I just want to be able to run pump gas.
Here is what I have:
Engine: 446 Stroker - .030 bored 400 block – 440 Crank – Alum Childs & Albert Pistons running 10.5 Compression - 906 Heads
Heads have not been milled and block has not been decked.
In a related post I asked this question along with a Camshaft issue but want to start a new thread on this topic, I do appreciate all the good information on the last post.
I have been told I could run Head Shims and or Thicker Head gaskets.
How much will the .020 head shims lower the compression?
Then how much with the addition of the thicker gaskets? (.051-.059)
Also machining of the Pistons is an option, I have attached a picture of my Pistons.
I can face them down that is not a problem, plus it’s won’t cost anything.
Just don’t know how much to face off, any good rule of thumb?
Thanks
Here is what I have:
Engine: 446 Stroker - .030 bored 400 block – 440 Crank – Alum Childs & Albert Pistons running 10.5 Compression - 906 Heads
Heads have not been milled and block has not been decked.
In a related post I asked this question along with a Camshaft issue but want to start a new thread on this topic, I do appreciate all the good information on the last post.
I have been told I could run Head Shims and or Thicker Head gaskets.
How much will the .020 head shims lower the compression?
Then how much with the addition of the thicker gaskets? (.051-.059)
Also machining of the Pistons is an option, I have attached a picture of my Pistons.
I can face them down that is not a problem, plus it’s won’t cost anything.
Just don’t know how much to face off, any good rule of thumb?
Thanks