Approximately how much is the going rate for changing head gaskets('98 Pontiac Bonneville V6)?

65 to 95 bucks an Hour. It's a 6 hour job. then you have parts. about another 60 bucks for the whole top end kit.Approximately how much is the going rate for changing head gaskets('98 Pontiac Bonneville V6)?To add to the other answer. There is the chance that your cyl. head may be cracked. Magnaflux the heads and get the valves checked too. My supercharged Pontiac GTP needed 1 head each time I removed them. Also expect new oil and coolant charges and perhaps change that thermostat too..