Hi, im Jaden and own a 82 Monte Carlo. Ive owned the car for about 4 years and recently have swapped the motor from the stock 267 to a built 350. This motor has been giving us troubles since we bought it pre-built at a swap meet in November 2021 and it went through a rebuild around February 2022. The cars runs pretty decent with some torque to it but after turning off the car and letting it sit for more then a minute the temp rises pretty quickly to around 230~ while the car is off. When you go to fire up the car after letting it sit for a few minutes it cranks for about 15 seconds, maybe more, and once it finally starts it dumps raw fuel causing white smoke and runs flooded for about a minute or two until it clears up and goes back to normal. It has a Cold Case large 2 row radiator with dual electric 12" fans, stock water pump, and no thermostat currently. I have been dailying this car for weeks and am sick of this issue and the car running hot in general. Today while driving the temperature reached up to 200F which is strange because it doesnt even get above 190 while driving at all. My dad has owned multiple gbodys and classics in general and we are stumped on this issue. Any and all help is appreciated, i will answer any questions in hopes of curing this heat soak/overheating! Also, the car has had the rear end swapped from its stock low 2.41 ratio gears to what I thought was 3.73 gears with a posi but the car tops out at 50-55, im thinking the rear end may be closer to 4.10 gears or even 4.56s, will gears this high cause overheating due to higher rpm from the gears? Edit: I forgot to mention that you can hear the gas in the carburetor boiling away and after a little bit of time the fuel filter is completely empty. I have yet to see if the carburetor spacer affects this.
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