Cold Case is here to help

[carrman]

yep, then that makes sense. at 100 degrees and higher rpm's like that, the car is just going to want to run hotter. No fan on the planet is going to lower the temps better than 80mph air flow. However, you might want to analyze the air flow as it comes through the grill. Could it be getting channeled below, above or to the side of hte radiator? Adding some type of baffle to force more air through the radiator could really help during these high speed driving conditions.

That being said, if you can stay at 210 for indefinite amount of time at those speeds, you should be fine.

I meant 3100-3200 rpm.

 

[70bigblockdodge]

Are you sure it's not running lean or not enough vacuum advance. I had a 383 in my Challenger, ran hot on the highway. Put a 400 in it still ran hot but acted lean I bumped up a couple of jet sizes on primaries (Holley) and it does not run as hot on highway.

 

[carrman]

Are you sure it's not running lean or not enough vacuum advance. I had a 383 in my Challenger, ran hot on the highway. Put a 400 in it still ran hot but acted lean I bumped up a couple of jet sizes on primaries (Holley) and it does not run as hot on highway.

I'm sure, it's running too rich now, and even worse with a 1500' raise in altitude.