307's, 305's, & 287's got a bad rap as they were created more for smog compliance than for performance. They generally under-performed in larger vehicles. In some cases parts to rebuild them cost more than a standard 350. The great thing about small blocks is the parts interchangeability and the potential for performance.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine