[700rpm]

An additional note on pulling the head: This can be difficult, especially as in your case if it's been on there a while. You have to pull the distributor, disconnect your ignition cable from the dissy, and remove your upper radiator hose, and then hope the darn thing isn't superglued on. If it is, get one of those good head pullers (about $80 from most suppliers, or borrow one if you can). You may also have to remove either or both your water pump and fan, depending on what type of fan you have. Your radiator support rods can also make the work troublesome. This is not a complicated job, but I find it annoying and try to avoid it if I can.