*Factory* replacement radiators - Team Camaro Tech
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post #1 of 27 (permalink) Old Dec 16th, 17, 11:09 AM Thread Starter
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*Factory* replacement radiators

I'm am looking to replace the radiator in my 67 Camaro (manual transmission).

Currently it has an aluminum aftermarket radiator that I bought largely because it was fairly inexpensive at the time (20 years ago). It works fine but has some issues I'm not fond of.

First off it has no petcock to drain the system ... have to pull the lower radiator hose to drain. Then it does not appear at all like a factory radiator. I also don't like how it is mounted on the core support either, a bit of a hack job. I don't think the connector nipples are the correct size.

I think I'd like to simply go back to a factory style radiator and resolve all of this clutter.

I see there are 20.75" wide radiators and 26.25" wide radiators (looking at Classic Industries catalog). I assume these widths are the core size, not overall radiator width. The opening in my core support is 22" wide. My current fan shroud is 21" wide at the front (radiator contact/seal point). Width of current radiator core is 22"

Living in the Mojave Desert where summer temps regularly range between 105 and 115 in the daytime I want to have the cooling system capable of handling about anything in that regard. The engine is a rather mild to moderate build. Aluminum heads, hydraulic roller cam, full length headers, 2.5" Flowmaster factory style exhaust kit (meaning transverse muffler) etc. ... but not *Hot Rod* by any serious means.

I figure I'll go with a 4 row radiator no matter what just to maximize the benefit on that count.

Here are my questions ... Do I gain much by going to the 26" wide version considering my core support opening is only 22"?

I see some 1/2" holes in the core support that I presume are the factory radiator mount points?

I understand the aluminum radiator scenario with the larger tubes and all that, but if a factory copper/brass radiator will serve my purpose, I'm ok with that. I actually have a big Griffin aluminum (factory fit) on my Mach1 with the 1.25" two row core.

What is there here that I ought to know before I go out spending money on parts?

Any input appreciated. You guys always seem to toss something out at me that I had not thought about and usually it is helpful ... so toss me what you have to offer.

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post #2 of 27 (permalink) Old Dec 16th, 17, 11:55 AM
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Re: *Factory* replacement radiators

I believe that the larger width radiator was meant to be for a Big Block engine. I'm not sure if a Small Block shroud will fit properly with a BB radiator. I'm sure others will know more about it. I have a 69 and I bought a 4 row OE style from TamRaz a few years ago and I am happy with it. By the way, it is not OE correct. Those cost $$$.
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post #3 of 27 (permalink) Old Dec 16th, 17, 12:01 PM
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Re: *Factory* replacement radiators

It is my opinion that a 1967 era design will not be near as efficient in 100+ heat as a current technology design two row aluminum radiator. I have a Griffin two row and I'm pretty sure it bolted up to the stock mounting holes on the core support. I have a 396 with Vintage Air in Texas and my cooling is very efficient. But, I'm not a radiator expert. It's just been my experience....


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post #4 of 27 (permalink) Old Dec 16th, 17, 12:44 PM
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Re: *Factory* replacement radiators

Quote:
Originally Posted by BRICO69 View Post
I believe that the larger width radiator was meant to be for a Big Block engine. I'm not sure if a Small Block shroud will fit properly with a BB radiator. I'm sure others will know more about it. I have a 69 and I bought a 4 row OE style from TamRaz a few years ago and I am happy with it. By the way, it is not OE correct. Those cost $$$.
I also got one from Tamraz last year. It looks very close to OE once I installed it. Hard to notice unless you know what to look for. Also relatively inexpensive. I believe itís identical to the ones from D&R Classics. Seems to function just fine until or if I get the leaky original recored.

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post #5 of 27 (permalink) Old Dec 16th, 17, 01:21 PM
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Re: *Factory* replacement radiators

Someone is making an aluminum reproduction likenesses of the Harrison style radiators but not sure who.
I noticed a dew this past season at a couple GM shows I went to.
They are good looking facsimiles and you do need to really look close once it is painted black and the shroud is installed.
Tamraz may also be reselling theses.

You should pull your AIM out and look at the factory mounting points.
The drivers side was factory done with a rubber well nut arrangement to give the unit a little flex.
Two mounts on the passenger side if I remember right.

Even in hot areas the original small block width size is going to have you covered as long as the core has the same or higher efficiency rating of the original Harrison's and you use the factory fan (clutch or not) and shroud. Almost guaranteed to be higher efficiency these days considering most new cars these days have plastic radiators and do the job just fine. But consult the manufacturers standards and compare to the design specs in the 67 documentation available from the GM Heritage Center web site.

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post #6 of 27 (permalink) Old Dec 16th, 17, 02:05 PM
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Re: *Factory* replacement radiators

Radiator-to-sypport on pass side is bolted.
Drvr side of rad is bolted to 'well-nuts' a rubber riv-nut, for radiator expansion.
Outer holes on drvr side is for heavy duty rad RPO V01
V8 shroud is bolted at top to bracket and bottom each side is held in place by a clip per soide and clip P/N has been superseded, a 10XXXXXXX number, I think.
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post #7 of 27 (permalink) Old Dec 16th, 17, 02:08 PM Thread Starter
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Re: *Factory* replacement radiators

Thanks for the responses so far guys.

Two things: I'm not concerned that the new radiator be a perfect concourse correct spitting image of the original. It would be nice for it to install as the original did though. My concern is the one I now have is just not even close in appearance and looks like a cheap add-on replacement. So I'd like to do a little better on that count with the swap.

As for the Griffin: The one in my Mach1 is a super radiator and a good replica of the factory Ford radiator for the car, I like it ... but per the Griffin web site it's SRP $744.53. Does anyone know of a source that might be selling these for less than SRP?

I can get a standard 4 row copper/brass for less than half that.

I'll have to do some looking at this *Tamraz*. It's new to me.

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post #8 of 27 (permalink) Old Dec 16th, 17, 02:54 PM
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Re: *Factory* replacement radiators

No one has commented on my post about the shroud for a SB (narrower width) fitting the larger width (BB) radiator. I think it will be an issue if you use an OE shroud for a SB on a BB radiator. Anybody?

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post #9 of 27 (permalink) Old Dec 16th, 17, 03:15 PM
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Re: *Factory* replacement radiators

Here's info on some factory looking rad's:
Chevrolet - Radiators

I believe Camaro Central carries some of them, 10% sale on now.
https://www.camarocentral.com/category_s/303.htm
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post #10 of 27 (permalink) Old Dec 16th, 17, 03:25 PM Thread Starter
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Re: *Factory* replacement radiators

Quote:
Originally Posted by BRICO69 View Post
No one has commented on my post about the shroud for a SB (narrower width) fitting the larger width (BB) radiator. I think it will be an issue if you use an OE shroud for a SB on a BB radiator. Anybody?
The shroud is mounted via the center mounting bracket off the core support. As far as getting it to mount up, probably not a problem.

As far as forced air flow you would still only get the fan pulling though that same amount of space inside the shroud no matter the extra width of the radiator core.

Or so it seems to me.

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post #11 of 27 (permalink) Old Dec 16th, 17, 03:29 PM Thread Starter
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Re: *Factory* replacement radiators

Quote:
Originally Posted by slazisme View Post
Here's info on some factory looking rad's:
Chevrolet - Radiators

I believe Camaro Central carries some of them, 10% sale on now.
https://www.camarocentral.com/category_s/303.htm
This one would just about be the ticket.
https://www.camarocentral.com/1967_1...21_p/rad-6.htm

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post #12 of 27 (permalink) Old Dec 16th, 17, 05:05 PM
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Re: *Factory* replacement radiators

As far as forced air flow you would still only get the fan pulling though that same amount of space inside the shroud no matter the extra width of the radiator core.

I was thinking that the offset of a BB shroud ( compared to a SB) and the fact that the radiator is wider, using a SB shroud on a BB radiator would leave a gap between the radiator and shroud as far as width is concerend.

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post #13 of 27 (permalink) Old Dec 17th, 17, 05:05 AM
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Re: *Factory* replacement radiators

Nice choice.
Get the shroud matching your configuration, i.e., SBC
Fifty years ago, we did not have the traffic volume and air was always moving through the engine compartment on its own.
Now with heavier volume, more slow if not stopped traffic, you may need to panel off the from the bottom of valance to support and header to support at the top, preventing air recirculation about radiator.
Heavy cardboard and duct tape are good troubleshooting tools,

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post #14 of 27 (permalink) Old Dec 17th, 17, 06:42 AM
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Re: *Factory* replacement radiators

DeWitts offers some nice options, they are high quality and decent fit.
They make some "factory appearing" ones or real close anyways.
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post #15 of 27 (permalink) Old Jan 2nd, 18, 11:07 AM Thread Starter
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Re: *Factory* replacement radiators

Well, It's ordered ... https://www.camarocentral.com/1967_1...21_p/rad-6.htm

It's the 4 row 21" for manual trans I noted in the previous post. Still discounted.

Ordered all the stuff to install it.

Mounting bushings and hardware, petcock, cap. I'll find out if my existing hoses are Ok with it when I get it installed.

I have a factory SB shroud in place now and am assuming it will be fine. Again, I'll find out for sure when I install it.

Side note: I'm about to pull the core support for sandblasting. I welded in about 20 unnecessary holes last night.

Just this core support and factory style radiator project will be a very nice upgrade to the car. It's going to clean up some things that were visually a bit *Icky*.

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