Radiator

[91obsHD]

Can anyone guide me to the correct radiator for a 91 c1500 rcsb 2wd 5.7

-has headers

looking for a stock replacement for now...

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[PlayingWithTBI]

No but, I can give you a link to one that will keep you cool in CA. I'm in AZ (previously central valley, CA). This is for an 88 but you can look up one for yours - should be the same.

https://www.radiatorexpress.com/Product/222481/1031106#vehiclefitmenttab

 

[Schurkey]

What's the point of three cores in an aluminum radiator?

Two, one inch or one and a quarter-inch cores is all it takes.

 

[PlayingWithTBI]

At the time I was overheating (turns out to be due to a blown head gasket), and it's rated for 800HP so I figured it should work. Anyway it didn't but now with my new build I can sit at a light with the A/C blasting in 115* ambient temp and keep cool. This is including a Tuff Stuff high volume aluminum water pump, high volume Flow Cooler T-Stat, and an AVCO high volume T-Stat housing. Go big or go home!

 

[Tim W]

Your either gona have a 28" or a 34. I dont think there is an in between size. Measure between the tanks to see what size you have. Also Check to see if you have an oil cooler and or a trans cooler

 

[L31MaxExpress]

Your either gona have a 28" or a 34. I dont think there is an in between size. Measure between the tanks to see what size you have. Also Check to see if you have an oil cooler and or a trans cooler

There is a 30.5" GM radiator as well. It was used in the G-vans and Express vans. Would be willing to bet it found its way into some trucks as well.