How much extra HP can I realize from adding a cam and 4bbl to slant 6.

jeffrey356 said
-- I have a '65 dart 270 with the original 225 c.i. slant 6. _ _ _ _ __ I really don't want to go to the 318 c.i. because I'll have to change the transmission. Expensive! --

-- A mild 318 is a slick option. - See My 65 Valiant, It's a 318 dressed as a 273.