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  1. #1
    Jr. Mechanic BluBurb89's Avatar
    Join Date
    Jul 2009
    Port Orchard, WA

    Default Transmission cooler and radiator airflow

    Every post I read on transmission coolers says the optimum placement is in front of the radiator. My a/c condenser covers half of the exposed radiator area; if I put the trans cooler in the space that's left; will it impede radiator air flow?

    Also I plan to install an electric fan; will I need to keep the OE fan shroud?

    1989 R1500 Silverado Suburban
    5.7L, TBI w/ Dual remote oil filters,
    16" 2010 CFM E-fan, K&N filter
    TH700R w/ Aluminum pan, remote trans fluid filter and aux trans fluid cooler
    Air shocks rear,
    7x16 dual axle cargo trailer; 10K Reese HD trunnion bar WDS, dual friction sway dampeners
    Cuz....I like to move it, move it....
    Semper Fi!

  2. #2


    No & No.
    I had a 90 suburban. Factory oil cooler was fitted in front of condenser on left side of truck. I added a trans cooler to the right side of the truck. No cooling problems at all. The aux cooler will unload some of the heat transfer the radiator was trying to perform as well. So it's an effective improvement.

    99% of all electric fans have a shroud built in. So the shroud for the mechanical fan is unnecessary. Its function is to guide air around that fan, and keep objects (like your arm) out of the fans path. So if you get rid of the fan you can get rid of the shroud. I'd be careful about "upgrading" to an electric fan. You need to make sure your new fan moves as much, or more air than the blade you've got. Especially if you sit in traffic a lot.

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