It all depends on where the engine is stopped when you pull the old distributor. It's easiest if you turn the engine to #1TDC BEFORE you pull the old distributor, then put the new distributor in and make sure it's pointing at #1 when you put it in. The most important part is the timing. Make sure all of the wires go in the same place and that the NEW distributor is aligned exactly the same as the old one.
The rotor will only fit in one way. Install it how it fits in and you should be good to go.
all you should have to do is take the distributor cap off, and there it is. answer take the distributor cap off, pull the old rotor off, put the new one on, put the cap back on.
On the distributor shaft, there is a painted mark, aline this with the two holes in the distributor shaft, located just below the gear. Mark the outside of the distributor where the rotor is pointed. On the inside of the distributor, you will find two cast marks, one stamped with an 8 and the other with a 6. For V-8's rotate the rotor until it is aligned with the 8. Now mark this location on the outside of the distributor. They should be about 45 degrees apart. The first mark is the direction the rotor should be pointing when you begin to install the distributor. When the distributor is fully seated, the rotor should be pointed to the 8 and the second mark. Snug the distributor into place and place the distributor cap on and tighten the screws for the cap. The plug wire post should be perpendicular to the center line of the engine.
rotor should point at number 1 plug lead when engine is at tdc make a mark with whiteout ,on outside of distributor before you remove distributor cap. make this mark where the #1 spark plug lead would be if distributor cap was on distributor when you remove cap this is where rotor needs to be pointing
With the #1 cylinder on top dead center (TDC) of the compression stroke, the rotor should point to #1 on the distributor cap.
The metal end should point to the #1 plug location on the distributor.
Crank on tdc#1. point rotor in distributor at the line on the pick up plate.Crank on tdc#1. point rotor in distributor at the line on the pick up plate.
mark position of old distributor on motor and on old dist, also mark position of rotor. Remove old distributor, mark the position on new distributor, move rotor to the marked position, drop in
get #1 cylinder on top dead center and then put the distributor rotor bug a hair before the #1 plug wire on the distributor and drop in down into the engine and all should be fine.
Ignition rotor and cap? Remove distributor cap usually clips or screws Rotor should lift off - replace in same position should have a "key" slot to insure proper position Install new distributor cap and transfer wires one at a time to insure proper placement
Unscrew the screws holding the cap and lift it up and away from the distributor. Pull the rotor straight up and install the new one.
Yes the rotor should be pointing to the #1 cylinder when you are installing the distributor.