First off, lets get the terminolagy (sp) correct. The big gear is the CAM gear. The small gear is the CRANK gear. OK? Next, if the distributer was not removed, leave it alone. Now line up the dots on the crank and cam gear so they point at each other. Install the chain with the gears positioned like that. Now, without moving anything, see if the distributor rotor points to where the number 6 plug wire is located. If yes, button everything up. If the distributor was removed, install it now, with the rotor pointing toward the #6 plug wire location. When replaceing a timing chain, it is not necessary to disturb the distributor, untill the engine is running, then it might need tweaking to get the timing set.