Has anyone gone from a single fan set up to a dual fan set up?notice any considerable difference in cooling?
CJ

 

You're running your 396 12.4:1 CR with a stock single fan setup? You should see a real nice gain in going to dual. Figure you're doubling the amount of air being blown through the motor. I'm going to a dual setup this summer. Good luck.

 

What needs to be done to swtich over the duel set up?

 

As far as I know, the fans and relays (wiring).