need a new radiator for my 67 - Team Camaro Tech
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post #1 of 13 (permalink) Old Aug 6th, 11, 02:54 PM Thread Starter
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Marc
 
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need a new radiator for my 67

I'm looking for a new radiator that will keep my 454 cool on these 85-95 degree days. My motor dyno'd at 575hp, i'm running a 3800-4000 stall converter, 411 gears and using a 2 core aluminum radiator with a 16" electric fan. It work fine most of the time unless I would get suck in slow traffic on a hot day. I'm hoping to avoid dumping big bucks to on a replacement. Suggestions?

Marc


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post #2 of 13 (permalink) Old Aug 6th, 11, 04:18 PM
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Re: need a new radiator for my 67

http://www.becool.com/

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post #3 of 13 (permalink) Old Aug 6th, 11, 06:18 PM
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Re: need a new radiator for my 67

I just put an Alumitech in mine.Great product.https://secure.wf-api.com/www.chevel...ng.com/46.html

67 Plum Mist Met. 408 TH350 3.08 posi
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post #4 of 13 (permalink) Old Aug 6th, 11, 10:37 PM
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Re: need a new radiator for my 67

A lot of good radiators out there, but I think one point that may set them apart that makes the biggest difference on a street car that sees stop and go is the radiator shrouds. Find one with a nice tight sealed shroud. I have both a Be Cool and a Ron Davis. Ron Davis makes the nicest sealed shrouds for their radiators and they suggest that you seal both sides of the radiator as air, like water, flows the path of least resistance. Be Cool makes a very nice radiator, but their shrouds are a bit simple/ crude to make the most of the radiator. Under 600hp, you shouldnt have too much problem cooling your motor with any decent dual 11-13" fan set up, though.

mike

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post #5 of 13 (permalink) Old Aug 7th, 11, 04:28 AM
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Re: need a new radiator for my 67

Your radiator may be fine....what's your fan set-up ?

If there is no shroud....there's your issue. (but yes, a 3 or 4 core would be better)

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1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #6 of 13 (permalink) Old Aug 7th, 11, 08:18 AM
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Re: need a new radiator for my 67

I agree with post #4. Air path should be sealed front and rear. Instead of throwing money at a new rad, check that out first.

What size core in your rad.

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post #7 of 13 (permalink) Old Aug 7th, 11, 08:58 AM
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Re: need a new radiator for my 67

Quote:
Originally Posted by camaro man View Post
It work fine most of the time unless I would get suck in slow traffic on a hot day.
This really sounds like an air flow problem and a larger core with your existing fan may just make the problem worse!

...Dennis

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post #8 of 13 (permalink) Old Aug 7th, 11, 09:09 AM Thread Starter
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Marc
 
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Re: need a new radiator for my 67

The radiator is has 1' cores. I started with a Perma Cool 16" fan, 2950 cfm with no shroud. Then went to a Flex-a-lite 16" Black Magic Extreme, 3300 cfm with a shroud and now back to the Perma Cool. I also have played around with water flow restrictors and thermostats. No real noticeable change. Temps stay around 195 when driving in cool/cold weather. When it's hot out and especially in heavy stop and go traffic the temps will creep up to 215-220. maybe I need a dual fan with shroud.

Marc


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post #9 of 13 (permalink) Old Aug 7th, 11, 09:55 AM
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Re: need a new radiator for my 67

Marc,

Radiator sounds fine. An external trans cooler would help if you don't already have one.

I have heard of mineral deposits inside the cooling passages of the head and block restricting coolant flow and causing the engine to run hot, something to check out next time the heads are off I guess.

67 Camaro 350
M20 4spd console,
8.5, 30 spline Eaton posi 373
Cowl Plenum
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post #10 of 13 (permalink) Old Aug 7th, 11, 12:43 PM Thread Starter
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Re: need a new radiator for my 67

I am running an external trans cooler. I'm guessing 600 miles on the motor, rebuilt acouple years ago.

Marc


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post #11 of 13 (permalink) Old Aug 7th, 11, 01:25 PM Thread Starter
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Marc
 
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Re: need a new radiator for my 67

Thanks for the help. I found some other posts and it looks like 210-215 on a hot day is unusual for a BB. I'll work on sealing things up around the radiator and maybe try a dual fan with a shroud.

Marc


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post #12 of 13 (permalink) Old Sep 1st, 11, 01:10 PM Thread Starter
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Marc
 
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Re: need a new radiator for my 67

I have some holes to seal in my radiator suppport that I made when I ran an intercooler with my procharger. Also thinking about a fornt spoiler. Do you guys think the Flex-a-lite 16" Black Magic Extreme, 3300 cfm with a shroud should be enough? I'm thinking about putting it back in.

Marc


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post #13 of 13 (permalink) Old Sep 1st, 11, 01:29 PM
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Re: need a new radiator for my 67

Just a few words on flex or pitch fans, I dont used them and I dont think they compare to a good shroud and fan clutch with a 17" 7 blade fan.
I run a 23 x 18" Entropy double row alum core radiator with a 170° stat. Normally this will allow my SBC with ac to run about 100° above ambient temps.

Might look at also the circulation of water from the back of the heads. Sometime intakes have these ports plugged and they can help. Keep hot spots out of the back part of the motor.

Don
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