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Message: <blockquote data-quote="chrisp427" data-source="post: 1506067" data-attributes="member: 23846">I’m experiencing the same issues.  I have a 94GT with a new dart block that after running for 30 minutes starts to heat up.  I originally had a 160 t-stat in but it would heat up pretty quick so I put a 192 in.  It will run for a while but heats up to 230 degrees then I shut it off to let it cool.  Looking in the radiator I don’t really see any flow and once it heats up the fluid starts to gush out.  It has a serpentine belt setup so the wp spins opposite (reverse) of the crank.  But I’m confused, because when I pulled the pump and looked at the blades they are facing the standard rotation direction.  Is this correct? The pump is aI’m experiencing the same issues.  I have a 94GT with a new dart block that after running for 30 minutes starts to heat up.  I originally had a 160 t-stat in but it would heat up pretty quick so I put a 192 in.  It will run for a while but heats up to 230 degrees then I shut it off to let it cool.  Looking in the radiator I don’t really see any flow and once it heats up the fluid starts to gush out.  It has a serpentine belt setup so the wp spins opposite (reverse) of the crank.  But I’m confused, because when I pulled the pump and looked at the blades they are facing the standard rotation direction.  Is this correct? The pump is a GMB-1920P.  I may sound stupid but it just seems like the blades should be different.  Car has never seen the road since I put the new motor in. Everything on the car is brand new so I’m scratching my head.  My builder is telling me the water pump impeller sounds like it is incorrect.  I ordered a EMP Stewart from summit and it looks the same as the GMB I have. I’m lost! I was going to try the 1/16 hole in the t-stat trick and see if that helps.Any insight would be greatly appreciated!  I am soooooooo ready to put this thing on the street!I will try ANYTHING at this point to get it right. 94GTEngine BlockDart Iron Eagle Sportsman#31355235Pistons- Wiseco ProTru pt-090A3Reverse Dome 351 Ford ratios based on .020 deckBore-4.155 compression-9.7.1 to 10.2.1Eagle ESP crankshaft, forged H beam rods, Arp high grade fastenersProfessional products 10,000 rpm harmonic balancerCanton racing products 6 quart oil pan and windage trayMelling high volume oil pumpNornda Automotive timing chain and gearsComp camshaft and Roller liftersGSR pushrodsIntake valve lift-.569Exhaust valve lift-.574Duration .006 Tappet Lift 286 open, close 290.050 INT: 6  BTDC. 50  ABDC EXH: 52.  BBDC  8. ATDCIntake.                  ExhaustLobe lift .3560.           240Lobe Separation 112.0 intake centerlineAFR Renegade 220 series heads1.72 Scorpion roller rockersFast EFI 2.0 Fuel management system</blockquote>