Here's a shot in the dark. Had to remove the heads on my Raider 3.0 because 3 exhaust valve guides had slipped. Replaced them, valve lifters, seals, timing belt etc. Anyway... upon re-assembling the motor it will start, then revs really high and dies. Double checked my timing and it's on, as well as the distributor being in the right position and wires being in the right place. Checked all my coolant lines, fuel lines, and vacuum lines and they were all as they should be. All electrical connections are good... any ideas of what it may be? Sounds like an air leak somewhere to me. Thanks guys!