I have a tall deck 427 big block chevy from a truck in the mid 80's with plans on turbocharging it with a turbo (not roots blower) from a 8v-71T detroit diesel (yes, the cfm and sizing work, determined by a ton of math). I am going low buck on this hole build.
I was wondering due to the fact that the tall and std. deck share the same bore,stroke & con. rod, the pistons pin to crown hight must be larger by 0.4". (Am I correct in stating this)
If this is true can I run a shorter std. deck 427 piston to increase the combustion chamber size and there for lower my compression ratio.
Two more questions, is there a 427 piston that is some where between the two because a full .4" increase in clearance would drop the comp. ratio to about 5.5:1 which is excesively low for the boost I wan't to run (mabe a high comppression std. deck piston)
Finaly if I do run the heaver tall pistons what is a safe RPM for intermitant runing (5500?)