[vettestr]

You are on the right track by refilling after hot/cool to purge all air from system. Bob C mentioned an air bleed hole drilled in the T-stat but respectfully suggest he has a typo on hole size. We use an 1/8 bit and Bob has 3/16 (think he wanted 3/32") air under maybe 15 PSI in a 1/8" bleed will do the job for ya.

I just leared the hard way you can have TOO MUCH radiator to cool properly. Running a 4 core alum. rad. with a fin count of 17 per " was restricting air flow. At 4" thick and a high fin count was slowing the air so much in traffic it would boil over. Company rep explained no electric fan configuration would move enough air to allow heat exchange and this rad. was designed for running at full track speed air flow. Who'd a thunk it !!!

A street car needs waterpump speed to work in traffic and must be a min. of 10 % overdriven, I target 15% for trouble free operation. The waterpump pulley needs to be smaller than crank pulley (by 15%) so these pulley kits advertised to reduce HP loss by under driving the pulley is a kiss of death on street cars in warmer climates !!!