Glad to hear you got it fixed, I have never had a problem with the underdrive water pump pulley and cooling. I would get a nice hi-flow water pump like a Stewart or E-brock. I run a 180 thermo, Ron Davis Radiator, 16" Perma-Cool fan and a Stewart pump and even in 90 degrees heat, it never gets over 190degrees and thats when I am sitting at a red light.
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Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!
FIRST TIME OUT 12.16@111 WHEELS-UP