I thank all of you for confirming what I suspected. It appears to be a design issue in high horsepower applications. Doweling seems like it might solve some of the issues but is there enough material/room to install dowels in a Mopar? And how about CRE's idea of the girdle. Would it be possible to incorporate some preload against the mains when installing a girdle? I know that it wouldn't be much, but, would it be enough to make a difference?





'64 Dodge 440 2 dr. sedan - 440/pushbutton 727 (in the body shop)
'99 Dodge 2500 Quad Cab Long bed 4WD - CTD 5 spd. 3.54
'89 Dodge 150 4x4 - 5.9 TBI/727 35x12.50's and 8" lift
'14 Dodge Dart Limited 2.4/6-speed A/T