electric fan question

[rattlebox93]

i have a customer that has a 84 6.9 it hasent been turned up at all he is the second owner ...it a has a pretty large mechanical fan on it and he is wanting to do an electric fan does anyone have any experiance with an electric fan on these trucks will an 18 inch fan move enough air to keep this thing cool or will i have to find some bigger dual fan set to keep it cool? thanks dj

 

[Bobus]

An 18" will prolly work, I had a '83 F250 6.9l that i had a Cardboard box infront of the radiator year-round and and it never overheated..So they obviously have sufficiant cooling in stock form