64-66 Radiator - The 1947 - Present Chevrolet & GMC Truck Message Board Network

65Custom · 06-12-2022, 10:09 PM

Hello all, wondering if anyone makes a cross flow radiator for the 64-66 trucks,
I'm planning to put a big block in my truck and a cross flow radiator is better cooling than a down flow radiator. So in my searches for a radiator I am not finding anything to convert a down flow to a cross flow for these trucks,

Has anyone done this conversion? What did you use? Or Am I just stuck with a down flow from one of the many suppliers?

Thanks in advance

**The Rocknrod** · 06-13-2022, 11:12 AM

I know US Radiator makes a triple flow for our trucks. Haven't eyed a cross flow myself. Someone else may have though.

vin63 · 06-13-2022, 12:17 PM

You can talk with Griffin Radiator about building one to fit the dimensions you want. I just had them build a radiator for an older AC Cobra replica kit car that I'm helping a customer get running again with an odd core size to fit that sloping nose and it was crossflow.

I run a downflow radiator (aluminum dual 1.25 tubes) in my C10 462 ci.

**Clyde65** · 06-15-2022, 08:00 PM

RnD fabrication is a vendor here

65Custom · 06-15-2022, 08:12 PM

Quote:

Originally Posted by The Rocknrod

I know US Radiator makes a triple flow for our trucks. Haven't eyed a cross flow myself. Someone else may have though.

That looks like a nice option but they are very proud of it

65Custom · 06-15-2022, 08:47 PM

found this vendor and looks like a good option but it is not a cross flow

https://www.coldcaseradiators.com/pr...mance-radiator

Too bad that is seems no one is making anything that is a cross flow drop in for our trucks

urmyboyblue · 06-16-2022, 09:07 AM

My 427 BBC runs cool with a standard design vertical flow radiator and an electric fan. Champion sells several different radiators for different power ratings.

65Custom · 06-16-2022, 08:42 PM

Quote:

Originally Posted by urmyboyblue

My 427 BBC runs cool with a standard design vertical flow radiator and an electric fan. Champion sells several different radiators for different power ratings.

Thanks for the response, guessing I will be going with a down flow which will be a more original looking under the hood and and less aggravation installing it as well.

verdell · 06-17-2022, 09:40 AM

My brother runs a Griffin cross flow (27.5" x 19") and dual fans with his built 468 Big block and it has been good. I, on the other hand, tried the Griffin and it came apart after 2 years so I went back with the Speedway 28" x 19" crossflow and a 18" T-bird/Cougar fan.

theastronaut · 06-17-2022, 11:57 AM

Quote:

Originally Posted by Clyde65

RnD fabrication is a vendor here

Check reviews before ordering...

65Custom · 06-17-2022, 05:15 PM

Quote:

Originally Posted by verdell

My brother runs a Griffin cross flow (27.5" x 19") and dual fans with his built 468 Big block and it has be good. I, on the other hand, tried the Griffin and it came apart after 2 years so I went back with the Speedway 28" x 19" crossflow and a 18" T-bird/Cougar fan.

Hey Thanks for posting this, I may check to see if that will fit in mine and what is required to mount this in place especially since the exact fit version is twice the price of the universal cross flow.

**cwcarpenter98** · 06-17-2022, 05:33 PM

You'll have to change the mounts for a cross flow, but if you can find one that fits in the available space, it would probably work

06-12-2022, 10:09 PM	#1
65Custom Registered User Join Date: Apr 2009 Location: Dawson, Ga Posts: 513	64-66 Radiator Hello all, wondering if anyone makes a cross flow radiator for the 64-66 trucks, I'm planning to put a big block in my truck and a cross flow radiator is better cooling than a down flow radiator. So in my searches for a radiator I am not finding anything to convert a down flow to a cross flow for these trucks, Has anyone done this conversion? What did you use? Or Am I just stuck with a down flow from one of the many suppliers? Thanks in advance __________________ My Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=366677 I must be

06-13-2022, 11:12 AM	#2
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: 64-66 Radiator I know US Radiator makes a triple flow for our trucks. Haven't eyed a cross flow myself. Someone else may have though. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

06-13-2022, 12:17 PM	#3
vin63 It's Better With Nitro Join Date: Apr 2008 Location: Chino Hills, CA Posts: 2,262	Re: 64-66 Radiator You can talk with Griffin Radiator about building one to fit the dimensions you want. I just had them build a radiator for an older AC Cobra replica kit car that I'm helping a customer get running again with an odd core size to fit that sloping nose and it was crossflow. I run a downflow radiator (aluminum dual 1.25 tubes) in my C10 462 ci. __________________ 1963 C-10: Deluxe-optioned cab, shortbed, fleetside Pontiac 462 ci, Kauffman D-Port alum. heads 4L80E, narrowed sheetmetal Ford 9-inch Tubular front and rear suspension Custom 6-piston front disc and 4-piston rear disc brakes

06-15-2022, 08:00 PM	#4
Clyde65 1965 Chevy C10, 2005 4.8L/4l60 Join Date: Aug 2004 Location: DFW Texas Posts: 8,546	Re: 64-66 Radiator RnD fabrication is a vendor here __________________ Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 *support our troops!*

06-15-2022, 08:47 PM	#6
65Custom Registered User Join Date: Apr 2009 Location: Dawson, Ga Posts: 513	Re: 64-66 Radiator found this vendor and looks like a good option but it is not a cross flow https://www.coldcaseradiators.com/pr...mance-radiator Too bad that is seems no one is making anything that is a cross flow drop in for our trucks __________________ My Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=366677 I must be Last edited by 65Custom; 06-15-2022 at 09:24 PM.

06-16-2022, 09:07 AM	#7
urmyboyblue Registered User Join Date: Feb 2015 Location: Montevallo, AL Posts: 272	Re: 64-66 Radiator My 427 BBC runs cool with a standard design vertical flow radiator and an electric fan. Champion sells several different radiators for different power ratings.

06-17-2022, 09:40 AM	#9
verdell Registered User Join Date: Feb 2013 Location: Columbus, MS Posts: 445	Re: 64-66 Radiator My brother runs a Griffin cross flow (27.5" x 19") and dual fans with his built 468 Big block and it has been good. I, on the other hand, tried the Griffin and it came apart after 2 years so I went back with the Speedway 28" x 19" crossflow and a 18" T-bird/Cougar fan. Last edited by verdell; 06-20-2022 at 11:46 AM.

06-17-2022, 05:33 PM	#12
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,488	Re: 64-66 Radiator You'll have to change the mounts for a cross flow, but if you can find one that fits in the available space, it would probably work __________________ Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson



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