I purchased a rebuilt Manual Steering Gearbox for my daughter's 65 Dart & it bolts up perfectly to the frame. However the 65 Dart's original universal coupling is too small for the rebuilt box.

The original gearbox diameter is .622 in. where it bolts to the universal coupling but the rebuilt box is .723 in dia.

The box remanufacturer showed the box as having a range of applications from 63 to 72 & over several models of dart, charger, & coronet.

Has anyone run into this & have they solved the problem by getting a larger universal coupler off a different model/year?

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1965 Dart 110k, 225, Carter BBD Super Six, 2 1/4 single exh., sbp manual scarebird front disc, 7 1/4 rear 2.94 sure grip, 14 x 4.5 OEM wheels, 833 OD with hyd. throwout bearing, HEI, electric fan, ram air/heated air, Accusump. http://plymouthcarclub.com/

Sounds like you got a C-body box? I have never seen a different splined shaft on the early manual boxes.

Lou

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Home of Slant6-powered fun machines since 1988

They sent you the wrong box. Interchange on the right box is '62-'72 A- and B-body.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

I just swapped a stock '67 manual box into my '73 and everything bolted back together just fine..

-D.Idiot

The final result was I purchased a new manual box coupler (#122) from the following source:

http://www.steerandgear.com/Chrysler_Catalog.html

The problem was:
1) the original power steering box with the .625 input spline & coupling is a smaller diameter than the replacement manual steering box with a .723 input spline.
2) Ebay listings incorrectly listed a single coupling that would fit either

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1965 Dart 110k, 225, Carter BBD Super Six, 2 1/4 single exh., sbp manual scarebird front disc, 7 1/4 rear 2.94 sure grip, 14 x 4.5 OEM wheels, 833 OD with hyd. throwout bearing, HEI, electric fan, ram air/heated air, Accusump. http://plymouthcarclub.com/