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Username Post: Dual Pass Radiator 55 Chevy        (Topic#357112)
Mikei16 
Member
Posts: 2
Mikei16
Loc: New York
Reg: 04-17-03
07-04-19 01:57 PM - Post#2769934    

Has anyone installed a dual pass radiator? I have a 55 chevy with 406 SBC and I would like it to run cooler, its not to bad running down the road, but it starts the climb when you are stopped. Would like to know pros and cons on the dual pass and where to get one that will fit.

Thanks



 
Ecklers AutoMotive
Rick_L 
Honored Member
Posts: 27651
Rick_L
Loc: Katy, Tx, USA
Reg: 07-06-00
07-04-19 02:32 PM - Post#2769937    
    In response to Mikei16

A dual pass crossflow radiator might theoretically be an advantage at speed, but it's not going to help you when you are stopped or going slow. There it will act the same as a single pass crossflow radiator.

Consider this, a single pass crossflow radiator has a bigger core than the stock radiator. That's a big plus, so it would be a big leap over a stocker.

Stopped or going slow, you need airflow. So, that means better a better fan, maybe a shroud - and an electric fan run full blast when it's on no matter what the engine speed is.

You also need to think of installation. A dual pass radiator will have the inlet and outlet on the same side - while a single pass will have them on opposite sides. A downflow (like stock) can have them anywhere on the tank, but of course the tank is narrower too.



 
Lead sled 
Frequent Contributor
Posts: 1948
Lead sled
Age: 59
Loc: Walton,NY.
Reg: 11-04-09
07-05-19 09:58 AM - Post#2769983    
    In response to Rick_L

I agree. electric fan should do the trick

Late yr model (Dec. 51 BelAir/ 52 trim), with a basically stock 67 Camaro SS350/295hp Turbo Fire Edelbrock 1405, Saginaw 4spd/355 geared 55/6 Chevy rear.2,1st place,and 1 top five award trophies so far
http://www.picturetrail.com/bris51deluxe


 
Bruces 57 
Frequent Contributor
Posts: 2419

Reg: 01-03-07
07-05-19 02:38 PM - Post#2769999    
    In response to Lead sled

Hello;
Not Just any electric fan, a Cooling Components electric fan that comes mounted with a shroud!

Bruce



 
Mikei16 
Member
Posts: 2
Mikei16
Loc: New York
Reg: 04-17-03
07-06-19 06:03 AM - Post#2770029    
    In response to Bruces 57

This is what I have, also I ran coolant hoses to both heads right from the water pump.



 
5/7HEAVEN 
Old as Dirt Member
Posts: 5661
5/7HEAVEN
Loc: In a quandry
Reg: 05-27-01
08-09-19 06:14 PM - Post#2772839    
    In response to Mikei16

When my '57 had a short water pump, absolutely no cooling issues with a mild 327. As soon as I moved the OEM radiator forward and installed a long water pump, all hell's gremlins appeared and remained for years. I tried everything except the mega-dollar radiators and dual-electric fans. Then I went back to basics with an OEM/6-cylinder-style aluminum radiator, an OEM-style Camaro clutch fan and a shroud!
Temps now hover around 180*+ with a 400hp 383. Cooling issues gone.

'57 BELAIR sport coupe/383/4-speed


 
Mel Foye 
*VIP* Founding Member
Posts: 4885
Mel Foye
Reg: 09-29-00
08-09-19 11:45 PM - Post#2772859    
    In response to 5/7HEAVEN

What were the crank pulley to WP pulley relationships on both setups?



 
5/7HEAVEN 
Old as Dirt Member
Posts: 5661
5/7HEAVEN
Loc: In a quandry
Reg: 05-27-01
08-10-19 07:56 AM - Post#2772877    
    In response to Mel Foye

The SWP was the standard fraction of an inch away from the radiator. I installed a power steering pump, so I needed a LWP for clearance. I can measure the clutch fan's relationship to the core in a few days.

'57 BELAIR sport coupe/383/4-speed


 
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