My 68 Camaro is running a .060" over bore 350 with a Weiand 142 blower, 700cfm Holley carb, crane hydraulic roller cam part number 119841-intake 359 at valve 539, exhaust 372 at valve 558 with 1.5 rocker ratio, msd 6 series ignition with a 3 stage retarder., headmen headers 3" collectors , coated with jet hot coating, to dual exhaust 3" pipes with black raven mufflers that dump in front of rear axle. Rear end used to be 4:10 gears but has since been reduced to 3:42. Transmission is an aluminum powerglide that runs trans cooler lines to the stock radiator. I have a TCI 2800 stall converter. I run a mechanical fan with a stock water pump and a 180 degree thermostat. My issue is this overheats according to my temp gauge which climbs 210 to 220 running around town and idling during hot summer days can see 230 and higher. I am seeing poor gas mileage and lots of black out the pipes. I run timing about 8 to 10 degrees. I am wondering what is causing the overheating? Bad timing, too much fuel, too low water flow, not enough fan cfm? I have run with and without the thermostat but yields same results. I also have a 100 hp Nos super power shot plate below the carb and used it only at the track when I use to drag which was years ago. Anyone have any suggestions on how I can cool this hot car down?