also so did Pontiac I will have to check the Number on the head I have sitting here that I am Putting one of my Lump port kits into. It is a small chamber head , I completely for got about Pontiac This maybe why The Number is not matching right with the Chevy Numbers. The Ventura Had a L6 that was NOT a Over Head cam L6

Larry/Twisted6
[oooooo] smile
Adding CFM adds boost smile
shocked God doesn't like ugly.