Efan conversation where do I screw in thermostat kit

[Stepside03]

I got a Efan kit that came with the radiator and Efans for my 1990 Silverado but wanted to know where do I screw in the thermostat adapter

 

[95burban]

While your under the hood, will you please tidy up the power cable for your amp.

 

[PlayingWithTBI]

where do I screw in the thermostat adapter

It can go in the passenger side head between #s 6 & 8 cylinders using the same hole your temp gauge sender goes in the driver's side between #s 1 & 3

 

[Stepside03]

It can go in the passenger side head between #s 6 & 8 cylinders using the same hole your temp gauge sender goes in the driver's side between #s 1 & 3

Thank u do u know what size Is the plug ?

 

[PlayingWithTBI]

do u know what size Is the plug ?

I can't remember, 3/8 or 1/2" NPT. Maybe someone else can help.

 

[Stepside03]

I can't remember, 3/8 or 1/2" NPT. Maybe someone else can help.

Could I just splice the wire to the one that’s already connected to the driver side ?

 

[L31MaxExpress]

Could I just splice the wire to the one that’s already connected to the driver side ?

No, that is a thermister for the gauge. Hold on to your factory parts. I would say more than 1/2 of electric fan conversions end up right back with the clutch fan.

 

[PlayingWithTBI]

No, that is a thermister for the gauge. Hold on to your factory parts.

Yes, you need an on/off switch to ground your relay.

I would say more than 1/2 of electric fan conversions end up right back with the clutch fan.

Yeah, I'm keeping my clutch fan and just adding a pusher fan for the condenser.

 

[Schurkey]

While your under the hood, will you please tidy up the power cable for your amp.

...and get a proper air filter lid so it's not drawing hot underhood air.

I would say more than 1/2 of electric fan conversions end up right back with the clutch fan.

Yup. It takes a REAL electric fan pair to cool a V8. Most aftermarket crap is suitable for four- and six-poppers.

Given that six-poppers are starting to put out real power, even they're set up with expensive dual fans and complex, multi-relay low- and high-speed operation.

 

[L31MaxExpress]

...and get a proper air filter lid so it's not drawing hot underhood air.


Yup. It takes a REAL electric fan pair to cool a V8. Most aftermarket crap is suitable for four- and six-poppers.

Given that six-poppers are starting to put out real power, even they're set up with expensive dual fans and complex, multi-relay low- and high-speed operation.

I had the 1987 G20 running in the shop for over an hour this afternoon. 102F in the shade. Idle, 1,350 rpm and even 2,000 and 2,500 rpm for a while. The temperature gauge did not budge of 195-200F with the 195F thermostat and the a/c stayed nice and cold. Best improvement on these trucks is a mechanical fan with more blades, more surface area and steeper pitch as well as the electric pusher condenser fan. The OE GM HD cooling parts are as close to a bolt in unit that you can buy and affordible.

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