275hp for the 4bbl and 290hp for the 6bbl were both Gross numbers
Big difference between Gross J607 vs Net J1349 that new engines rate at
Cold Gross crank J607 Hp of a 3.6L is probably closer to 330-340hp
100% Stock 1970 340 Dyno Sounds pretty close to stock 275hp
"The 340 fired on the first spin of the crank, and was given the customary 20-minute break in. We loaded the Superflow, pulled the handle, and had our baseline figures: 281.3hp at 5200 rpm and 328.5 lbs/ft at 3900 rpm"