this is a tech question but not about an S10 so i posted it in off-topic. my uncle has built up a 66 chevelle with a 502 BBC putting out about 520HP. anyways he has champion spark plugs and moroso plug wires with the straight boots. he has a weird problem of lately when he starts the motor up like one or a few plug wires will just blow off the spark plugs, like something pushes them off or something, i dont mean just make them loose, they come completely off. and its different ones, not the same ones everytime. what could it be? the only thing we could think of is maybe the compression is pushing air up thru the plug into the plug wire boot and building up pressure and blowing it off but thats not likely and his engine has about the same compression as stock...like between 9:1-10:1 i think...something like that. so what could it be?