um..mine reads about 30 at idle after warm-up (seems high to me) and 60 ish when i drive it, never really gets above 70 but I cant go over 4000rpm on the new motor anyway.

but problem is fixed was a cracked ceramic on the front trailing plug. i got the **** zapped out of me when i when to make sure the boot was on all the way. then i saw big sparks and claps of lighting and after putting in a new one (yay for iridiums) runs just fine