Quick comparison
The Ferrari 735 S appeared in 1953, the Ferrari 750 Monza in 1954 – one year later. Both have an inline-four engine, mounted at the front. The more powerful one is the Ferrari 750 Monza: 260 PS versus 225 PS.

The Ferrari 735 S appeared in 1953, the Ferrari 750 Monza in 1954 – one year later. Both have an inline-four engine, mounted at the front. The more powerful one is the Ferrari 750 Monza: 260 PS versus 225 PS.
All values come from the data sheets of the two models (sources listed there). The better value is highlighted in green wherever both data sheets give a comparable figure. Photos – Ferrari 750 Monza: The original uploader was 98octane at English Wikipedia ., CC BY 2.5. Licenses and originals: Sources & image credits.