I have done alot of reading a research and understand 05-06 stock e fans will bolt right up to my 99 silverado 5.3 Liter as long as i have a 34" radiator, but what i cant find is where on my radiator do i measure to determine if i have a 34" radiator. If i measure just the core its 28" but if i measure from end cap to end cap its approx 34". Is there an easier way to tell if the 34" fans will fit.

 

You have a 28" radiator.

 

I also had the same question. Measure the core? I have an 02 Z71 that I wanted to do an E-fan conversion on also but wanted to make sure I had what I needed.

 

Mines a 2000 I put ls1 fans in did mine last Saturdaybeen working great I built my own harness

 

Yes measure the core or look at the back of the radiator core support for the mounting holes. If your radiator uses the inner set of bolt holes you have a 28" radiator. If it uses the outer set of holes you have a 34" radiator.

 

Thanks for the help guys. Ill have to build my own or go with the LS.

 

How'd you build your own harness?

 

https://www.performancetrucks.net/fo...-101-a-494123/

 

Awesome, thanks for sharing that man. Sounds easy enough. Going to check to see which radiator I have and get this done! =) Bad fan clutch + underdriven plus 105º+ days during summer with the AC on = hot *** engine.

 

I used the efan 101 page I did the two relay cost me 18 bucks to make was very simple