1. You bought the biggest gas eater of all the V8s in the Jeep family.
2. Knowing this, why the sudden interest in saving gas?
The 249 is a great piece of gear. Mine lasted about 145K miles. (100K non stock)
You will find that the 1 mpg of gas that you save with a 242 is not a viable option to save money on gas. If you were upgrading your axles to currie 44s or currie 60s then, yeah. If not, it is a waste of time. You aren't wearing anything out or hurting your mileage.
How do I know this? I've been driving Grands for 11 years.
00 4.7 Laredo...KYB gas shocks, ADDCO rear sway bar and Firestone Destination tires.
08 Z71 Suburban
94 5.9 Laredo 6.5 RE lift with 35 Maxxis Bighorns
and 33 Bridgestone Duelers
Detroit and true trac
Red Jeep Club Member
Texas Jeep Owner #6
USN Jeep Club #4
For your performance needs: