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Message: [QUOTE="BrewTown, post: 1546603, member: 31811"] I spent a good amount of time on MatchBot to pick that 364.5. Did I do it right? Not sure. Garbage in, garbage out right! Or is it Coors light in, Coors light out? My plan for this whole thing is to have a really responsive fun street truck. With the calculators on this site, and a rough estimate of 4500 to 5000 lbs., it seems I'd need that 600 to 650 RWHP to hit my 1/4 mile goal. Primarily really fun street truck that will surprise the newer muscle/pony/whatever they are calling them now... That being said, I don't want to resort to a loose converter, I like manual transmissions for that connected to the pedal feeling. Loose converters are for all out race in my opinion. Band-Aid for a set-up that's not street friendly. That's my opinion, probably not a popular one. That 364, should be making power very low in the revs. The gearing I've chosen is equivalent to 3.73 gears and 36" tires for reference. Maybe that will shed some light on that choice also. As far as the 476 atmospheric, I'm basically trying to balance when the chargers are coming up on boost. That 476 moves enough air for way over my goal, but, I think you hit the nail on the head with that 364 being a restriction higher in the rev range. Gating around on the turbine side should take care of that, and give higher temp energy to the 476. On the compressor side, only way I know is to try it out, and see what others have done. Seems to me on the 5.9 front (yes I know huge size difference) guys are making 1000 hp with a 62 HP. Displacing 444 CI, and only looking in that 6-700 range, I think it may work. Maybe I'll fail miserably... To clear up the cam and porting idea, both of those increase power at every RPM, not just at peak output and high RPM. Most think to do those mods to increase the peak numbers. That is not what is going on here. Take a look at the 2 years Lavon Miller won DPC. The difference between, he worked on airflow. Not charger changes. Head flow, cam etc... If you watch the spooling characteristics between those, night and day difference. That's one of the puzzle pieces to a quick spooling street truck. Also, boost is restriction, that's all. Free flowing combination promotes more power at lower boost, which means a cooler intake charge, which means more power. I hope all this rambling makes at least some sense. I wish there were more proven combinations, but, compound 7.3's are scarce because factory rods won't take it. And most guys building with rods are targeting one form of racing or another. Not street. [/QUOTE]