The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 47-55.1 hot 305 post radiator swap

Volfandt · 11-21-2018, 09:40 PM

Keep in mind that extended idling will cause an engine to run hotter than when it's got increased air flow through the radiator at speed. This holds true for both mechanical and electric fans.

The bubbling could be the air getting purged and steam is SOP.

Definitely try a 180. And for GP if you still see higher temps when extended idling in your garage (or where ever your testing) put a fan in front and have it blow additional air across the radiator and see if it drops.

11-21-2018, 09:40 PM	#8
Volfandt Registered User Join Date: Jan 2018 Location: Knoxville TN Posts: 87	Re: hot 305 post radiator swap Keep in mind that extended idling will cause an engine to run hotter than when it's got increased air flow through the radiator at speed. This holds true for both mechanical and electric fans. The bubbling could be the air getting purged and steam is SOP. Definitely try a 180. And for GP if you still see higher temps when extended idling in your garage (or where ever your testing) put a fan in front and have it blow additional air across the radiator and see if it drops.