Clutch fan with spacer?

[AZ_Overdrive]

A quick question here.

I upgraded the 89' Burb to the 4core radiator swap (454 shroud) and now the fan blades are about a 1/4 inch from the shroud.

So, my question is, if I put a 1" spacer on the clutch fan to get it tucked nice and neat inside the shroud will that cause any problmes with the thermal clutch?

The spacer is made of allum. I wouldn't think so but I just wanted to be sure.

Thanks for any help!

 

[mrk5]

That's how my setup is. Been like that for a year now, probably 5000miles, and I haven't had any problems pop-up yet.

 

[AZ_Overdrive]

mrk5,
Thanks for the info. I will go with the spacer and see how it works out.

 

[diesel4me]

not more than 1 inch!

I tried using a 2" spacer with a clutch fan--it caused the water pump shaft to snap flush with the case of the pump when I got my truck stuck in a snowbank,and had to race the motor up a bit to rock it out,sending the fan into the radiator and hoses! ...I'd say 1 inch spacer might be ok,but 2"--dont do it!...there is a lot of weight to a fan clutch and blade assembly,and they dont like being too far away from the mounting flange on the water pump,or they will start wobbling,and that leads to disaster...

 

[4XSlave]

Eliminate the need for spacer and shroud by installing an electric fan. I got one with two 10 or 12" fans from summit and it helped drop the temp on my 83 fullsize.

 

[sweetk30]

clutch fan is heavy unit. and the fan blades are to be about flush with the shroud. this is with themm all the way in the shroud. keep a eye on the setup with the spacer. radiators arnt cheep anymore.