Before I discovered big blocks (in my case the Mark I 409 originally then the Mark IV 427) I used to run 283 motors with 1.94 fuel heads and a Crane solid roller cam stuffed sixty over with TRW forged pistons at 12.5:1 compression.
I used to shift at 8,600 RPM and go through the traps with the needle bouncing off of my 10 grand Sun tach. I used to ventilate a 283 block at the rate of two a month due to my 5.13 rear gears (the 3.08 was the tallest factory gear available for my 8.2 inch rear end), but I had three other long blocks already to go in my one ton panel truck that I used to tow my '55 to the track to replace a blown motor.
This was decades before ARP bolts or Chrome-Moly rods. In 1963 I ugraded to a 327 engine (a 331 actually) abandoning the 283, as did most of the other racers I knew; but that is beside the fact.
The best that the factory could do was an 11:1 forged piston, forged crank, Fuelie head fed by a mechanical Rochester fuel injection unit that cranked out an unbelievable one horse per cube (the 392 Hemi of the same age could only find 300 horsepower). So I wouldn't expect 300 horsepower or more out of a 283 even with modern heads and a solid roller cam unless you are running race gas and 13:1 compression (you will be lucky to hit the 195 horsepower factory rating for a 283 four barrel engine with today's pump gas).
Been there, done that, and had a room full of cheap trophies from that time frame.