[RocktimusPryme]

Originally Posted by AG

I also use a PRW ali water pump with a stock 3 core radiator and a flex fan in my '72 Lemans. The car has a hard time getting to 180F in 90+ weather highway or idling. I don't think it is stagnant air that is the cause of your issue. In my race car, I use a generic ali radiator with a Mark VIII E fan ans a Meziere E water pump. Runs 180, gets to 200 at the end of the track and is back to 180 in the pits.

Assuming the stock core dimensions are roughly the same as the Cold Case numbers, Lemans radiator probably has about 30% more frontal cooling surface area compared to the 1st gen Fbody. That solves a lot of problems.

My Fairlane race car as a 503 ci engine with a cheap ebay special 1" thick core radiator for a like 84 F250. But its got a huge front surface. It keeps the BBF cool even with two 12" fans just ziptied to it with no shroud.

My 67 on the other hand has been a battle, and it has the same nice Cold Case radiator the OP mentioned. You are just limited to a somewhat small radiator in those.

FWIW I also think I have my cooling solved with the junkyard PWM fan swap I did. Big 18" single PWM out of a volvo XC90. Its been in for over a year and I dont think Ive seen a number that starts with a 2 since. I have to admit that your setup is way prettier though

Mine mostly sits right at the 180* thermostat, but once in a while it will creep up to like 185-187 with seemingly no difference in inputs.....that irritates me. I dont like not knowing why something is happening.