[wanab5150]

Since Holly, Roush, and Smeding state the 770 is the best combo for the Roush 427, I guess I have a couple of questions.

Why, out of all these professional sources do they recommend the 770 or 750 instead of being able to advertise that a Roush puts out 600 horse power, rather than holding back to 550 HP If they added the 1000cfm carb, considering it was perfectly streetable. Why would they not use it? I talked to a Roush tech about the fact you run the 1000cfm and he said it's way too much carb for the street. He (no name) said they use 1000cfm's on 500+cu.in. motors because they can handle them and they are primarily racing engines.

Also Smeding runs 750's on their 427 Dart motors and they would surely like to advertise higher HP ratings for sales if for nothing else. I'm trying to make sense of what you are saying but everyone else says it will not be streetable. I virtually tried to talk these guys into selling me some more horse power (that I really don't need), I would surely spend the money for a carb to gain another 30 hp. I'm assuming you're using their 1040cfm carb.


I've read your other comments and it's obvious you are a knowledgeable guy and know how to find HP. Pro-systems website is all about Drag Racing. Maybe your idea of streetable is different than that of the masses.