It can cost between $500 and $2000+ to rebuild a 307 Engine on a Chevy Nova. It all depends on who is rebuilding the engine, the brand of the parts, and where the parts are bought.
get a rebuild kit for your model carb and follow the directions.
how to remove a 1966 283 engine from a Nova
Depends on the year
Yes
That would be a 2 bolt
you can have anything from the 6 cyl. up to the 396 v8 in the 68 nova.
70 nova's never had a 454 in them and the horsepower rating would have to be assessed from the year the engine is and if anything has been done to the engine other than being stock.
You have a 1973 nova 350
could need new plugs, plug wires, new points and condenser rotor and distriburetor cap and the timing set, also could be in need of a carb rebuild.
Need to know what engine it has.
That all depended on what engine and rear gearing you had.
What engine? 250 ci straight 6