Hope members will overlook my rattling on.
RED65STEPSIDE, a real life example of overheating problems when you kick the horsepower way up. I built a mondo beyondo wild Mako Shark Corvette for my girl. Tricked out, custom body, weighs barely over 2,000 pounds, 383 stroker at 460 horsepower, fuel injected flame throwers, the whole car show wildness thing. Buckles asphalt with a just a tap of the gas pedal, low tens in the quarter mile. Only costs ten dollars to start the puppy, gets about 5 miles to the gallon.
For a year now I have been designing and redesigning her radiator and cooling system to keep the temp below 200 degrees. Runs cool at 35 MPH and over. However, at a car show cruise, 210 to 220 degrees even with electric fans and an engine fan. A 350 is designed to run over 200 degrees. I am not comfortable with this.
You will have the same problem if you build your 283 too "hot" - high horsepower.
Your 283 is designed to run around 180 to 190 degrees and should not be taken over this for long periods of time.
Bottom line is we all love high horsepower but there is a price to pay: Hard to drive and constant overheating problems. If you really want wild horses, go with a 350 or 383 size engine. If you want a bit of neck snap yet dependability, keep your 283 at 250 horse or below as Hotrod Lincoln suggests. He is giving you very good advice based on his years of experience, as I am.
Billyray