Viscous Fan Won't Fit

ok i just checked on the 318 -340 fan cross refrence for 73. it looks like there were 2 other fans used not common to the 340 but 1 that is the same. the other 2 are slightly different. 1 has a 5 blade setup and the other 7. the 7 blade unit (#2863224) is 18" while the other is 18 1/2" and 5 blade. the 7 blade unit was used on alot of different setups but it is slightly smaller fan. the other 5 blade fan (# 3462139) is used on c body and some e body cars and big blocks and small blocks. that being said if you found any car from 73 that had a 18 1/2 7 blade clutch setup then odds are it is the right fan for you application.

here are the cars to look for for the correct 1973 340 fan setup.

68-71 belveder,coronet,charger w/ 383 or 440 and ac or max cooling.
69-71 fury,polara,monaco w/v8 and ac
70-73 340,hemi without ac
73 dart,duster,valiant,barracuda,challanger w/ 318,340,with ac
73 charger,coronet,satelite,fury,monaco,polara, w/ 318 ac
73 fury,polara,monaco,police car, or taxi w/ 360