My 69 Sport Sat 383 4 spd had the same engine as my brothers 69 Road runner diference noted dual snorkle air cleaner his has air grabber They both had single point dist. Power wise mine had 3.23s his was 3.55s big difference in power off the line Mine was stamped E383HP same as his engine. i Guess the 5hp was the aircleaner ????
Sounds like you got lucky and the wrong engine was installed, unless the 4speed cars got the 335HP engine ??
The RR engine had the 440 magnum cam, the 330HP engine which your non roadrunner should have had used the same cam as the 350hp 440 and the 2bbl 383 engine, that is where the 5hp is.
