big_block

tell me what you guys are running in 289 ,, we have a stock w/ stock shroud and still getting hot ,, thinking about going to alum.??

ravenblack67

I have a three row copper/brass 20" rad in my 289 without a shroud and I never have overheating problems. I have Auto, AC, PS. and live in the south.

john68fasbk

I'm running a 20" Howe Aluminum Radiator with an electric fan, Runs all day long at 190 degrees.

big_block

hey john
we just installed a northern alumunum radiator made for a 65 coupe with a elect fan a shroud ,, we had to some mods to front end suppots to make it work ,, amd now it runs 190 with a 170 or 180 stat ,, is that right ?? it was hot here that day i say 91 maybe ,, you think it should run at stat temp ???

Cheese302

my fathers convertible is almost bone stock, and actually still has the original radiator in it. his boss 302 has a stock re-core. Both run fine. I know the convertible could use a re-core and flush. I think a cheaper aluminum rad would be more than enough to cool a street car.

big_block

well us too,, but maybe 190 is fine ??

codeman94

stock.....everything cooling wise....runs great....may be have thermostat problems?

john68fasbk

190 in 91 degree weather is great, I wouldn't worry about it at all. Ford Racing told me I should run my new motor at 220, Thats just to high makes me a bit
uncomfortable.

Cheese302

i have never heard of 190 being too high. And at 220ish your not going to hurt anything. i would say if your scraping 200 while idling a while, i wouldnt worry about it.

shatter

I run the stock radiator and have A/C. Only time it gets hot is if I sit in stop and go traffic for a while, otherwise it runs at normal operating condition all the time. I have a friend with a hopped up 67 Chevelle that runs a Griffin aluminum radiator, seems pleased enough with it.

big_block

i guess the main problem is the gauge is there a way to check it and see what is ??? ,, man if we stayed with the light we would have this problem lol you think

harleybill

I think that your temp is ok as well. You might try some Royal Purple Ice which helps the radiator heat.. (see ebay add below).


Purple Ice is a high performance, synthetic, radiator coolant additive for both gasoline and diesel engines. It is formulated to reduce the surface tension of the coolant, which improves heat transfer through the cooling system while providing additional protection against rust, corrosion and erosion.
Purple Ice prevents the formation of scale deposits in the radiator for optimum coolant flow and lubricates the seals of the water pump. It is ideal for use in straight water racing applications or in antifreeze / water mixtures.
Purple Ice is compatible with traditional ethylene glycol antifreeze (green) and GM Dex-Cool® antifreeze coolants.
http://www.royalpurple.com/images/techtip.gifPurple Ice should not be used in new radiators until anti-freeze has been cycled through the system. Contact Royal Purple’s Technical Support department for more information at 888-382-6300

Reduces Coolant Temperatures
Extensive testing confirms Purple Ice reduces coolant temperatures better than comparable products while providing extra corrosion protection. For example, the average operating temperature of a 350 c.i.d. V8 engine (equipped with 160° thermostat) when dyno-tested with different coolants are:
A.
Standard mix of water and glycol (antifreeze)
228° F
B.
50 / 50 water / glycol mix with Purple Ice™ added
222° F
C.
Straight water (no corrosion protection)
220° F
D.
Water with Purple Ice™ added
200° F