Quote Originally Posted by LittleBeast View Post
Radiator has been working like a charm, however my problem ended up being the fan clutch and the FF Dynamics electric fan was not powerful enough to suck air through the thicker Ron Davis radiator. Now that I have the aluminum radiator and new fan clutch installed I have not gone over 180 degrees in 100+ Houston humidity. Pleased so far, but I would say most overheating issues can be solved with a new $100 fan clutch from AutoZone or amazon.
Actually, Bill Williamson at RD Radiator advised me against putting an auxilliary fan on as it would actually cause a decrease in air flow as it actually blocks airflow and only about 30% gets through.
http://www.vehicross.info/forums/sho...1&postcount=19

And it was the same for me basically, my problem wasn't fully resolved either until I replaced the fan clutch (and redesigned fan blade).

I went with OEM cuz somebody mentioned they'd tried several aftermarket f.c.'s and they'd and their overheating wasn't resolved until they tried the OEM f.c. Think it was VXorado.