questions about z6 bottem end
 

I heard that the bottem end on any d-series motors was extremely weak and cannot hold a turbo running more than 6 psi. Is this true? Any info about bottem ends and max boost that can be run on stock motors would be apreciated.

Re:questions about z6 bottem end
 

i have heard of people runing like 15psi, and 220hp from sohc's that were stock.. and some people say their max is 220 and some say 250 so trial and error basically..

Re:questions about z6 bottem end
 

if you have no engine management... 5 psi max. if you have an intercooler, msd 6btms/FMU's etc... 6-9 psi. if you have a stand alone fuel management system, minimum 440cc injectors and a fuel pump... 8-11 psi.

that info was from jeff's old FAQ. boost just depends on how well mantained your motor is and your engine management.