cbxer55
Well-Known Member
- Joined
- Oct 9, 2009
- Messages
- 1,883
- Vehicle Year
- 1998
- Transmission
- Automatic
The Vulcan 3.0 is a high RPMmotor... engine. It will get better MPGs and performance when you are above 3k rpm. I used to think the same, until I learned this. If you have an auto trans, then you might be out of luck, but I had a manual, so i could shift whenever I wanted to.
Changing the axle ratio to 4.10 helps a lot. And shifting it manually. Also a tuning chip or tuner to allow you to raise the shift points. I have a JET chip on mine. I still shift it manually more often than not. With the CAI I have, a full three inch tube from the MAF to the TB, it craves high rpms. But it's kind of doggie down low. Even though changing from 3.73's to 4.10's is only a 10% difference, it helps. And keeping the OD off until speed is north of 55 or so helps. Especially when I'm hustling it around a set of curves, it loves to be shifted manually.