Quote:
Originally Posted by Scarebird
nope, I missed it. IIRC only the 3/4 ton and up get them...
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That's correct. The truck models with the new 6.6L L8T engine get a hydraulic clutch fan. This would include the Silverado 2500HD pick up trucks.
HOWEVER! The thread size on the L84/L87 water pump pulleys are smaller than the L8T truck engines. If found a YouTube video that shows the differences:
http://www.youtube.com/watch?v=yl5r8Z5tPZw
I'm also thinking about running a hydraulic clutch cooling fan. Looks like I'd have to change out my L87 water pump, though. Or run the Ford parts that Scarebird listed
Here's a list of the GM parts for the 6.6L L8T truck engine.
Fan: 25919018
Clutch: 84382012
Fan to clutch adapter: 20979011
Water pump: 12707680