The throttle blades were cracked as I always have them the throttle was bumped a few times getting the carbs off but not opened up all the way or "pumped" also the car sat with no carbs and a fender cover over the intake for over an hour while I got my sons car going that should have been plenty of time for the fuel to evaperate I thought but we all know what happens to thought I am a little concerned about the intake valves hard to beleive there was an explosion big enough to blow the intake off and it didn't pop the intake valves open and hit pistons has anyone had bent valves after the big boom