Installed Hayden 2747 last week... no better then the old clutch fan I had. Tonight I install a Hayden 2797. Idled in the driveway for an hour 85 deg ambient, 180 deg thermostat. Rock solid at 190... With the hood open in nuetral.
Yes I am running e85 right now. I do have some more work to do on this, but that's the first time I have not just watched the gauge slowly creep up. I've tried all kinds of pulleys that have just made the belts squeal. I will try them again now that I'm getting closer on keeping the heat under control.
car has always stayed cool at speed. Gets to T stat temp and stays there with the 7 1/4 pulleys. It's always been the idle cooling that has been the problem for me.
aluminum 2 row Rodney Red 1" tubes
7 blade steel fan
Hayden 2797 fan clutch
Shroud
Rad support baffles not installed
7 1/4 water pump pulley
7 1/4 crank pulley
180 degree stat
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68 Firebird 400, #16, xe274, street dominator, 850 DP, hooker headers, t400, 3500 stall, 3.73, 295/65 bfg drag radicals... best 13.27 @ 102.8, 1.90 60ft
Last edited by 68blackbird; 08-22-2015 at 11:24 PM.
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