3G Hemi fuel: EFI vs Carb

One last thing- the 3G hemi is special because of the heads. 5.7 & 6.1 & 6.4 apache heads can all flow upwards of 360 cfm @ .600 lift on the intake with porting work, and the flow numbers at lower lifts outperform just about anything, LSx motors included. If they're ported right, the velocity numbers will stay up as well. That's what makes the hemi special, not EFI. But, the factory EFI intakes have limits. The 5.7 has intake has great low end, up to ~5700. The 6.1 gives up 5-10 hp down low to the 5.7 intake, but surpasses it at 5700 and is good through 6400 or so (power will still be made above it, but there are better options above 6400). For peak power above 6400, you'll want a drag pack intake, but you'll give up 20-30 hp on the low end.