2003 Suburban E-Fan Conversion Radiator Question

[LADenali]

Hi guys,

I acquired a 2003 2500 Suburban (w/ 6.0, 2wd) and am refreshing the cooling system from the clutch fan to an e-fan conversion.
I haven't found a solution on mixing-matching the best radiator and e-fan combo you can buy new. So far i've seen the following:

Radiator:
1) Mishimoto: p/n MMRAD-GMT-99 (link)
2) GM: p/n 21649 (link)

E-fans:
1) VDO: p/n FA70617 (link)
2) Doorman: p/n 620652 (link)

Pre-configured:
1) Alloyworks: p/n RAD-CHEV-AL-171 (link)

Any feedback on your particular install or guidance on other solutions (not looking at wrecking yard finds ) is appreciated. Also I dont know about the different radiator lengths (34" vs 40") so any info on that is also welcome!

 

[justirv]

Hi guys,

I acquired a 2003 2500 Suburban (w/ 6.0, 2wd) and am refreshing the cooling system from the clutch fan to an e-fan conversion.
I haven't found a solution on mixing-matching the best radiator and e-fan combo you can buy new. So far i've seen the following:

Radiator:
1) Mishimoto: p/n MMRAD-GMT-99 (link)
2) GM: p/n 21649 (link)

E-fans:
1) VDO: p/n FA70617 (link)
2) Doorman: p/n 620652 (link)

Pre-configured:
1) Alloyworks: p/n RAD-CHEV-AL-171 (link)

Any feedback on your particular install or guidance on other solutions (not looking at wrecking yard finds )

I have a 2002 Tahoe Z71. For us its a choice between 28" and 34"radiator cores, and my knowledge is limited to the 1500 series. It must be nice having a 40" option(?). Of all the conversions I've seen, it is the 34" radiator version that is needed. It really can be any quality rad... as far as fans, I went with the 2010+ fan module as they have the (more efficient) 9 and 7 blade fans. This will slide right in place of the existing 34" mechanical fan shroud. You'll need to program fan settings in your ECM, and decide if you want a single ECM output plus A/C clutch activation as your 2nd trigger (simple), or add a second ECM output (and program accordingly). The mish is very nice, but pricey. I prefer VDO over dorman, and I have no idea on the alloy. If that was truly a quality item, its a steal at that price. For "normal" quality, and proven longevity, GM A/C Delco usually works well (from a reputable seller, not AMZ). Are you going with a repurposed harness and relays? If not, Nelson and others have easy solutions. Let us know what direction you go.