ididit Retrofit Steering Column: 1962-66 Nova - Manual (Page 6)

4
Installing the column:
You will be using the original mounts, but you may want to consider
replacing the floor seal. Normally it will be pretty trashed from
removing it the first time.
Protect that new column!!! We recommend that you wrap the lower
4-6 inches of the column with masking tape. Then slip the seal & floor
mount (with tabs facing engine compartment) over the column. Tape
the seal & mount to the column so it doesn’t scratch the column.
A helper would be handy at this time!
You are going to loosely install the column to mark the setscrew
location.
Install the steering column by sliding
it gently through the firewall and into
the coupler. (Figure 2) You may have
to turn the shaft slightly to engage the
spline into the coupler. While your
supporting the column verify that the
column aligns with the tab in the upper
half of the dash mount. The column
should be inserted into the coupler 1
inch.
While holding the column have your helper install the setscrews
into the coupler. Next gently tighten them onto the column & then
loosen and remove the setscrews. Doing this will mark the spot
where you need to drill the shaft! Now remove the column out of the
vehicle and spot drill a dimple into the shaft with the same 5/16 drill
bit approximately 1/8 of an inch deep. This should be just past the
bottom of the spline depth.
You will want to clean and debur this area fully, we recommend using
a small file.
Now have the helper go back outside the fire wall and guide the
column into the coupler. Install the setscrew and jam nut with Locktite.
Make sure the setscrew aligns with the dimple on the column.
(Figure 2)