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Old 05-10-2018, 02:13 PM
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Robyn Robyn is offline
Missy Good Wench ( Moderator)
Join Date: Apr 2001
Location: Newberg Oregon
Posts: 10,688

The factory units were 2 fat rows, aluminum brazed tubes and plastic tanks.

As long as these OEM jobs are clean inside they cool fine.

IMHO they are a tad small in cooling capacity, as they start lagging once they get some high miles.

I used a Visteon in the Dahooooley the last rebuild and it cools fine.

Also noticed that the cooling ability has increased a bunch as we left the lower aluminum cover off after we put the engine back in... Not sure why that did not get bolted back on, but did notice it stays much cooler when its hot out.

Possibly the engine bay is staying cooler and allowing more air to vent in/out.

Also the kid dropped on a hood with the vented cowl bump and that could be allowing air to vent ?????
(1) 1995 Suburban 2500 4x4
(1) 1997 Astro
(1) 2007 Chevy Avalanche
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