Hello again amrg, I am Oscar from Spain, running a 2006 H3 3.5 automatic,
Right now I am deciding to switch to a efan setup, is not a simple question because here the Temps in the south of Spain reach sometimes 40ºC or even more...I usually g to sahara desert in Maroc where temps could be even higher under hard driving conditions (high rpm in dunes, a lot of temperature outside, ac on...etc)
I think that the best solution for me and my aplication is the Puller fan that you recomend from a Chevrolet camaro ss, so the questions are:
-With my actual aplication consider adding the Puller Efan that you suggested...Would the alternator from my 2006 3.5 i5 control that? Is only a 120 amp alternator, I think
-How to wire that fan to my Setup? I prefer maybe the external sensor setup over the PCM controling the fan
-How much power can I expect from that setup? In 355nation forums people talk about 10hp increase in Dyno, I am searching for Hp right now, but reliable too (I know people will suggest: ey! take a v8 over the 3.5, but this H3 is with me from 2007, a lot of miles with me, always very very realiable and there are a lot of things done to this with my hands. The Hummer can take almost everything, is incredible, better than any other brand that go with me to desert.)
Right now I am running a 3.5 i5 with Volant CAI 155356 adapted, Ported Throttle body and Supersparkz spring delete in Coils, Guted manifold, deleted muffler (straight pipe in that part) PCM tune from PCMof Nc.....and of course Fox 2.0 performance series shocks (that was the best mod by far), Alpha cv axles, Outfitter design steering rack kit and DIY differential bushings kit. Moog greaseable U joints, Moog reinforced links of stabilizer bar and bushing. 40000 Tru-Cool trans cooler (in desert driving under hard throttle and faster speed, take temps in 180ºF, perfect for my use and abuse)...
My next mods list is the EFAN setup (trying to liberate 10-12 hp from the engine and better mpg (more miles of range in desert drivings) and a Exhaust Header from JTR (the shortly style). Right now my engine is producing 260 hp at the crankcase with my calculations, I hope to reach the 280 hp with these mods.
Is amazing how powerful the engine is now, is super strong and a lot more torque from it. I hope that you can help me with the next mod Amrg (efan)
I will post more news from my Hummer in a new thread in these days. Very cool the stickers that i have!
Thanks