so my 489/871 engine is done. we are building a run stand for it now but i have to put a fuel systen together before we can run it. I will be using an electric fuel pump. probably a carter "black unit" but the regulators offer more choices then i thought. i am running two pro systems 850 double pumpers. the car will be a pro street type with some drag strip time planned for sure. holly recomends either two regulaters or one of the volummax units specificly designed foe dual carb aplication. also i see boost referencing is availible. do i want that feature. i plan on running a max of 10 lbs boost.
thanks
greg

You don't need the "boost reference" feature with a roots blower. That's used on centrifigual blowers and turbos in a blow thru application where the carb is pressurized by boost pressure.

Rob

You don't need the "boost reference" feature with a roots blower. That's used on centrifigual blowers and turbos in a blow thru application where the carb is pressurized by boost pressure.

Rob


What he said, and either of those regulators will work well.