BlueMeanies
Member
- Joined
- Mar 22, 2014
- Posts
- 94
- Reaction score
- 6
- Location
- Fayetteville, AR
- Ram Year
- 2007 QCSB RWD
- Engine
- Hemi 5.7
Now that I've been driving the truck for a while, the new power/torque curve of the 260 cam is starting to grow on me.
The cam starts to kick in at 2300~ish. By 3500 the truck pulls really hard. By 4500 it's freakin' rockin'! I'm still wanting for a bit more bottom end grunt though-fer pulling trailers, city MPG, quickness, 'n such.
Rather than doing gears (running 3.92 now) I'm pondering going smaller in wheel diameter. The truck currently has 275/60/20. 33” dia. The options are a 275/45/20 (29.75”) or 285/50/20 (31”).
Perhaps this is a stupid question to ask and not phrased very well but here goes. What might this do to city and hwy RPM's? I don't want to completely suck gas at ludicrous hwy rpm/mpg. Towing vs unloaded?
The cam starts to kick in at 2300~ish. By 3500 the truck pulls really hard. By 4500 it's freakin' rockin'! I'm still wanting for a bit more bottom end grunt though-fer pulling trailers, city MPG, quickness, 'n such.
Rather than doing gears (running 3.92 now) I'm pondering going smaller in wheel diameter. The truck currently has 275/60/20. 33” dia. The options are a 275/45/20 (29.75”) or 285/50/20 (31”).
Perhaps this is a stupid question to ask and not phrased very well but here goes. What might this do to city and hwy RPM's? I don't want to completely suck gas at ludicrous hwy rpm/mpg. Towing vs unloaded?