Can anybody help me calculate my compression??
I will be running a 347 cubic inch LS1 block with Mahle 4cc valve relief pistons, TSP's LS6 heads(62cc) with .040 cometic gaskets, and the T2 TSP 232/234 .595/.598 112 cam

Thanks in advance
Seth

 

Open the spread sheet that J-rod posted and enter your data.

https://ls1tech.com/forums/advanced-engineering-tech/394937-updated-valve-event-dcr-scr-header-length-spreadsheet.html