Someone has told me that carbs from a larger motor (dont know what size) will up the hp due to the same block being used. Its a 1976 merc 400EL kifr 40hp super thunderbolt.
ser. 190376. if so, what else has to be done to compensate...prop...time..? motor seems to be slow to begin with.
ser. 190376. if so, what else has to be done to compensate...prop...time..? motor seems to be slow to begin with.