69 Cuda 440 said Mr. Road Runner H, It's just an information thread, focusing on 1968 E/Stock cars. Trying to compare the Mopar 383/335 HP vs. the Olds 350/325. Just a little understanding on how Mopar got 335 Horsepower out of the 383, or least advertised it that way. Next up the 383 'Package Stock Option', on a real 383 'Perfomer'. Click to expand...