| Got the flow #'s today on the GMPP 12556463 L98 Aluminum heads....
Out of the box and with about $20 worth of hard rolls to finish the runners:
243 CFM at .500 lift Intake
192 CFM at .500 lift Exhaust
These are killer numbers considering the Intake port is only 163cc.
Even beats the Vortecs in the mid lift region.....
I think I'll put flat-tops in this motor for an 11:1 compression ratio and see if it runs on 94 premium. |