losing water under boost

losing water under boost my car pushes out all the water while under heavy boost any ideas dont think its a head gasket because without the blower belt i drove the car 150 miles today and never lost a drop new to sc and dont know what to do engine specs are 306,10.5:1 comp, 185 afr,performer rpn intake,24lbinj,s trim 10 lbs boost

Head Gasket or Intake Gasket around the water ports without a doubt.

What he said.........my bet is on a headgasket....probably not blown bad but bad enough to leak when you get into boost.

BTW.....24's are too small for that combo, even if you run an FMU (and if not they are WAY TOO SMALL)