don57

I would like to purchase a higher capacity radiator my my '66. I have installed a 347 and the original radiator doesn't seem to have the cooling capacity to keep the coolant temp. down. Any ideas where to buy one?

Rat fink

What you want is a 4 row unit, most stock radiators are 2 row. A 3 row would probably work but a 4 row is better.A good electric fan and a 180 thermostate should make your ride cool.

http://motors.shop.ebay.com/i.html?_...506.m270.l1313

Iskwezm

dont waste the money on a 4 row, all they do is transfer heat to the 4th row. I used a bigger aluminum Summit brand that goes frame rail to frame rail.I had to do some mods to make it work though.

Rat fink

Just use a 1 row then, There is a reason they make 3-4 row radiators, They transfer heat better than 2 row radiators. It doesn't take a rocket scientist to figure out that 1,000 radiator fins transfer heat better than 500 radiator fins, even if someone says that 1,000 fins is a waste of money.

ozarks06

Here's what I used: http://www.summitracing.com/parts/GRI-1-26202-X/

I bought Summit's generic radiator mounts (cradles) and cut out the radiator support to get more surface area. Cools great (with Taurus fan). Normally runs 180-190 deg. Got to 200 once or twice in crawling traffic in 95 deg weather with A/C on.

You didn't say whether you have a manual or auto. This radiator is for manual transmissions.

Iskwezm

It also doesnt take rocket science to figure out a 4 row radiator is a 45+ year old design.A 2 row aluminum will dissipate heat better/faster and flow better then 4 3/8" rows that transfer heat to each row as the air passes through.

racer_dave

A good 3 row will be more than enough. I don't even need 4 rows on the race cars. The key is to duct and shroud them well and use fans with enough capacity to do the job. Also pay attention to your t-stat and water restrictors. To little restriction is almost as bad as too much.

Split row radiators are very efficient, but you have to see if there is one with outlets to fit the car. Also make sure the water pump pulley is the right size to drive it at the right speed.

JMD

That Summit radiator is a pretty good one, it is an American made Northern brand radiator, Jim is running one with his 408, it does a good job and the price was reasonable.

Rat fink

Iskwezm
A 4 row is 45 year old design. That is just a statement, I'm not sure what the point to saying this is. A Detroit locker is 46 years old, not that it matters. A 9 inch rear end came out in 1957, that’s 54 years old. The 9 in must not be any good.

You said
"A 2 row aluminum will dissipate heat better/faster and flow better then 4 3/8 rows that transfer heat to each row as the air passes through."

So if you have less surface area the heat will transfer better/faster?


Ahhhh, OK. I think I'm done.

JMD

I have used 2, 3, and 4 row brass/copper radiators at one time or another, and for their given purpose they worked fine, at this point, I simply prefer the economy of a "well bought" aluminum radiator.

I have no use for a $700+ radiator....