Help! 360/4-speed conversion in crisis!

RustyRatRod said

I'm just askin here.......why does it need to be welded back on? I mean......."how" important is it?

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The hole that is broke in half is the dowel pin hole. It is used to align. Center to center motor to trans. Whenever you install a different trans on a motor or vise versa. You should always indicate the trans or bell. Brewers sells offset dowels to correct the alignment. It is a must for proper wear on mains and pump bushing or input bearing on a 4 speed. Makes a big difference in performance.
Good blow proof bells come with oversize dowel holes . You indicate the bell, Tighten all bolts then weld the thick dowel washers in place that are provided with the bell. This is a must or premature wear and loss of power wil result.

When ever you change the trans or factory bell buy the offset dowels and do it right.
Brewer's Performance - Mopar A833 4-Speed Transmission and Component Specialists