well i took my 72 2wd blazer to the scrap yard today

[meathead95]

gotcha! well after i got home from the scrap yard i was adding some antifreeze to it and the radiator blew a couple tubes in the middle while i was standing in front of it and blew hot antifreeze all over me. anyway i am going to add a 540ci bbc this winter to it. so i was wondering if anyone had a part number for a good 3 or 4 row alluminum radiator for it. and where to get it.
thanks
keith

[meathead95]

i found a griffin at summit made for a 67-72 part number gri6567arbax for 469.00 does anyone know of any others?

[hoser]

Most of the aluminum after market radiators I have seen come with the NASCAR 4 fins per inch meaning they leave a BIG air gap between fins so when your going 220 MPH the air dont blow the core out, myself I use the high efficiency brass core radiators that have about 15 fins per inch and transfer MORE heat at 0 to 70 MPH than the fancy smancy "aluminum racing radiators" do, a good friend of mine spent about 1000 BUX trying to cool his blown BB 57 Chevy but once he went to the 4 core brass radiator all his cooling problems went away, think he got 200 bux for his $750.00 aluminum radiator, the aluminum radiator would have probably been ok for a normally aspirated SB engine.

[lolife99]

I would run a "nice" copper/brass radiator if I could find a supplier that handled a "USA made" radiator. I think I'm going to run an aluminum Griffin or BeCool brand in my '71 project truck. I was pretty disappointed in the 4-core I put in my blazer. It was "suppose" to be a Modine from www.radiators.com,... BUT came in as a import look a like. Poor fit and finish. I installed it because I was in a jam. But that won't happen again.

[QKENUF4U]

my bud runs nothing but GRIFFINS in his BB novas (500cid+) never had a problem cruising town etc. (slow speeds)

[FRENCHBLUE72]

I ran a be cool in my v-8 powered yota loved that thing damn truck was alwasy cool...

[BubbaGreen]

check out www.usradiator.com, you might be surprised what you can find.
Aluminum rads are excellent for racers, but you may only get a couple of years out of them in a driver (due to the expansion/contraction and stress between the fins and the tanks).

[hoser]

Originally Posted by BubbaGreen

check out www.usradiator.com, you might be surprised what you can find.
Aluminum rads are excellent for racers, but you may only get a couple of years out of them in a driver (due to the expansion/contraction and stress between the fins and the tanks).

Cool thanks for the link, its nice to see a vendor that shows their math and does not rely on customer hype to prove a point.

"We've learned, for example, that core design has more bearing on temperature drop than material (copper- brass verses aluminum). We've also learned that 2 rows of 1-1/4" aluminum tubes had only a 3-degree advantage over 4-rows of 1/2" brass tubes at 65 m.p.h and a 2-degree disadvantage at idle. Given the added core thickness of the aluminum radiator we had expected a greater temperature drop...but, it wasn't there."


"Our test of similar core designs proves conclusively that aluminum radiators offer no real temperature drop advantage over copper and brass. On the other hand, aluminum radiators weigh about 2/3rds as much as copper and brass units and if your racing, that 9 to 12 pound difference could be real important."

Thanks again.

[kyle4381]

Ron Davis makes sweet radiators he is here in AZhttp://www.rondavisradiators.com

[Blue Beard]

Maybe we could get a scrap yard to come and get the blazer.

That should be considered a disgrace to even joke about....

[meathead95]

he he he i figured someone would jump on that. as for brass to aluminum i think ther is a major difference as i had a 3row brass radiator in my v8 s10 and it always ran hot so i went to a 2 row alluminum and it never got over 190 ever so im deffinately going alluminum i just dont know which one yet.