I'm a novice engine tuner here with a 327, cam Elgin e-919-p (408 lift 280 dur) & a Holley double pumper. It's not a combination I chose but what I got with the car. Trouble is it starts to run hot a freeway speeds after about 15 to 20 min on an average temp day of about 80 - 85 degrees. New radiator and high flow water pump don't help. Timing is set at 8 degrees at idle and 27 at full advance... I'm guessing I must be running lean from what I read in the various posts. I'd love some ideas on where to go from here.