Since converting my 85 IROC to 134, the AC isn't efficient as it should be (the car has been in the shop several times to rectify the problem), especially at lower speeds. Would an electric fan in front of the condenser be helpful? If so, what product would fit between the cross bars and condenser?

JamesC

 

I was also wondering the same question, as I am having my A/C retrofitted this week. I am running a stock radiator, and the car can stay cooled fine with that, but I am afraid the the 108* days here will make it way too hot once the A/C is working.

 

Installing a fan in front of the condensor/radiator will work against the original puller fan and make it work a lot harder. The most efficient way to get more air flow is to buy a dual electric fan unit with a fan shroud like the dual 11" Spal fan units ($235) or the stock Z28 dual fans with shroud.

 

if you put a pusher fan in front of the condensor wouldn't that make the puller fans job easier?

 

I remember this subject came up awhile ago but, I actually did this on another vehicle and didn't notice any improvements.

 

i wouldn't try it unless the fan u are adding on has higher CFM then the stock fan or else i would think it would be a restriction.

 

If the two fans (pusher and puller) are a different cfm, the lower cfm fan becomes a restriction to the higher cfm fan. Also, if the are the same cfm, the total amount of cfm is probably going to be about the same. The pusher fan on the front was a good idea, and still is in some cases. For example, with a mechanical clutch fan--around town and idling they don't pull much air. Adding a pusher fan can push the extra air needed around town.
Bottom line... two fans, one pusher and one puller will pull a total cfm of about the average of the two(give or take some). Two fans side by side, the total cfm is the cfm rating of both fans added together(give or take some).
Best situation, twin fans, side by side, that run all the time the ac is on.