I do have CAI exhaust and a tuner. Everything that I have found show the 4.7 dose good with bigger throttle body.. the 07 and older 4.7 came with 62mm throttle body the 08 newer came with 65mm throttle body and the difference between those two 4.7 is about 35 hp idk the exact # I do know the 08 newer dose have more hp. Everything I have found about bigger throttle body on the 4.7 show improvement off the line which is what I'm looking for top end is good for what I need.. could have better bottom end.. gears are next.
Check with Matt at Moes a vendor on here,he used to carry ported late model 4.7 throttle bodies.I had one,along with a CAI /mandrel bent modded mid pipe and a Magnaflow hemi cat back dual exhaust.On the dyno,after 5 hours of dyno'ing it put down 244 at the tires,still wasn't great out of the hole,but above 3500rpm it would give stock Hemi's a good run,and if they were untuned,it'd pass them easily wide open.The horsepower gain was more in the 08+ head redesign not the throttle body so much.The motors gained a fair bit bit from the prior earlier 4.7's with the head redesign,but that also meant there's no off the shelf headers that'll fit them. Nick at AirRam used to have a blower kit for the earlier 4.7's,that supposedly would also work on the later 4.7's,but you'd have to do some research on that.The little engine loves nitrous though,i know of 1 later 4.7 that was running in the high 13's with a 100 shot of nitrous.Nitrous creates cylinder pressure ,which is torque,a small 75 shot won't hurt it,and it'll give you the tire spinning torque you're after
