Re: Twin Ultramatic Shifting

Posted by BH On 2008/5/20 8:38:26

Though Hotrod has a '56, you bring up an important point, Randy.

Having started out my life with a pushbutton shift on a '56 Exec, I found the Drive-Left/Drive-Right thing very confusing with the (PN^D^LR) indicator lens of the 55th Series cars. (I only ever owned one '55, never drove it much, and sold it 15 years ago.) Yet, the function of those positions becomes more clear when you compare them to the revised (PNHDLR) indicator lens of a 56th Series car that's equipped with a manual selector - even though that order seems a bit dyslexic compare to other BrandX cars I've owned.

Drive-right starts out in Low, then shifts, automatically, to High (like "D" on 56th Series). Drive-left starts out in High, bypassing Low altogether (like "H" on 56th Series).

Do I have it right?

Regardless of that, proper torque of the valve body screws was a hot topic in factory bulletins.