this is your best solution for heat i did not have overheating problems but did not like it running at 210-215 F now it runs at 195 F in 88 F wheater and i did pull my boat no difference in temperature that hole in the hood made big difference problem is the engine is big and takes a lot off room and hot air does not have much room to move outAt the time of that picture, no, it was not there, while doing some test runs with the fan clutch fully engaged I managed to tear the fan against the shroud with some high throttle; I reworked the shroud adding more tolerance for the blade flex, purchased a second fan and so far it has behaved.
Here are some pictures of how its running now.
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Side view - I know the welds are ugly, once test runs are complete, I'll disassemble, smoothen the welds and have the shroud anodized black.
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Still need to invest time on the electronic side, lots of details pending:
- Shift indicator thru Range Switches from transmission.
- PWR button to activate Performance mode, turning PWR bulb on at dash, and defaulting off every ignition cycle.
- 4Lo and Torque converter Lock up relays
Regarding intake temperatures, I did some torture tests last weekend, idling for 1.5hours at 120*F ambient temperature, hood closed, AC full blast, Aux Fan ON, intake temperatures climbed up to ~160* no effect; after the idling period I did some laps around the block, no performance effect observed, only the fan clutch roaring constantly.
Im using Dirty Dingo ones, pretty nice, im positive a 50 or 100rpm's adjustment will fix the vibration issue; while in park, there is little to no vibration, If I increase thru the pedal aboyt 100rpms it smoothens out.
-Emerson
Damaged Fan...
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and there is distance shroud to fan blade for maximum efficiency i do not remember the distance but you can google it


