I got my car on the road, and I shifted my c-4 and rowed the gears, and now my throttle is not coming down... When I put it in park, reverse, whatever it is revving way high. I have to mash the break pedal, for it even not to go. This is a 331 stroker motor, c-4 4200 stall in the car. Do I need to adjust the idler screw and play around with the TB some? Also, I was sitting in traffic the other day, and my radiator hose blew.. Thermostat stuck??? Any ideas??? Overheating? Did I smoke my motor? Im not sure... the t-stat is a 160... It gets awfully hot down in Saint Louis, do I need to put in a 180? There has been no tune on the car, and I just got it running... Please help... Need to get car running!!!