I'm planning on changing the cooling fan for the summer.  What sizes are other people using, the T-bird vendors seem to be selling 16 inch, but it seems that there is enough clearance for a larger fan and I want all the cooling I can get.

Thanks,
Don

I installed one in my T-Bird years ago. Never really noticed any difference that I could tell.

To add my two cents worth. On my 55 T-bird,I used the 6 blade fan from a 1967 Mustang with air cond 351 W engine it fits into the shroud about a 1/4 inch, with about 3/8 of an inch clearance.  works great 

Bob