I'd like to lock it in OD for 70 mph + interstate hiway driving. Because the tranny wants to kick down to soon. My 3.4 pulls plenty good. Currently geared 4.55 with 33"

4L30E trannys have 0.72 overdrive and are taller geared than the 5 speed manuals.


Curt B 89RS Calmini Header Delta Cam 33x10.5 BFG MTs & 90 Trooper 3.4 v6, SAS D44 ARB/Hobart 5.38s 35s my pictures