Aluminum Rad, Preference????
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Joined: Aug 2001
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From: Ansonia CT
Aluminum Rad, Preference????
Hey guys, I have a new stock brass & copper radiator that isn't doing the job for my 300 Hp. 350. It has 2 10" electric fans. I'm thinking I need to do an Aluminum upgrade, there are a lot of choices out there. Any suggestions??? I'm open to all ideas, I just don't want to spent my ride time watching the temp gauge... Thanks 
Race Director
Joined: Feb 1999
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From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
After I rebuilt my motor, the temp would keep climbing the longer I drove. I was like you and did not want to watch the temp gauge the whole time I was driving. The rad that was in the car had been boiled out and flow check and had a clean bill of health. It still did not cut the mustard. I called DeWitts and he suggested an aluminum reproduction radiator. After installation, the hottest the car gets is 200 and when moving it stays on 180. 
Very happy and it was a direct drop in installation.
Very happy and it was a direct drop in installation.
Melting Slicks
Joined: Jul 2004
Posts: 3,248
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From: westland mi
Originally Posted by Eddie 70
After I rebuilt my motor, the temp would keep climbing the longer I drove. I was like you and did not want to watch the temp gauge the whole time I was driving. The rad that was in the car had been boiled out and flow check and had a clean bill of health. It still did not cut the mustard. I called DeWitts and he suggested an aluminum reproduction radiator. After installation, the hottest the car gets is 200 and when moving it stays on 180. Very happy and it was a direct drop in installation.
Very happy and it was a direct drop in installation.
Race Director
Joined: Nov 2000
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From: Waterloo ontario Canada
I feel any of the 2 core 3 inch aluminum rads will do the job. I bought the universal one and other then the angle of the lower output it is identical to the dedicated corvette on and hundreds of dollars cheaper. Be creative on the lower rad hose and save.
I went with 2 16 inch fans. One in front and one behind. NO matter what the temp stays below 200 but it did require both fans running
I went with 2 16 inch fans. One in front and one behind. NO matter what the temp stays below 200 but it did require both fans running
Melting Slicks
Joined: Feb 2003
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St. Jude Donor '03,'11
Originally Posted by norvalwilhelm
I feel any of the 2 core 3 inch aluminum rads will do the job. I bought the universal one and other then the angle of the lower output it is identical to the dedicated corvette on and hundreds of dollars cheaper. Be creative on the lower rad hose and save.
I went with 2 16 inch fans. One in front and one behind. NO matter what the temp stays below 200 but it did require both fans running
I went with 2 16 inch fans. One in front and one behind. NO matter what the temp stays below 200 but it did require both fans running
I'm keeping the stock shroud and mech. fan.
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Melting Slicks
Joined: Feb 2003
Posts: 3,053
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St. Jude Donor '03,'11
Originally Posted by norvalwilhelm
Be creative on the lower rad hose and save.
]
]
i have the griffin 1.25 2 core that has a slightly bent lower neck but not enough. What did you do for a lower hose?
I'm going to finish mine later this week. I plan to keep the stock shroud.
Burning Brakes
Joined: Sep 2004
Posts: 1,167
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From: Ft.Worth Texas
I do. I just got the bCool with duel fans but haven't installed it yet. I think everything needed is there except fittings for AT cooler. BTW, they use spall fans and include mounting brackets.
Only thing I am changing is adding a 2 1/2 x 3 1/2 x 3/32 thick rubber under each bracket that goes over the top and bottom of radiator so there won't be metal to metal contact. I may also add a second thermo switch to stagger the fans. They sent one 180 degree switch only.
Only thing I am changing is adding a 2 1/2 x 3 1/2 x 3/32 thick rubber under each bracket that goes over the top and bottom of radiator so there won't be metal to metal contact. I may also add a second thermo switch to stagger the fans. They sent one 180 degree switch only.
Le Mans Master
Joined: Nov 2000
Posts: 8,220
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Originally Posted by vettenut2
Hey guys, I have a new stock brass & copper radiator that isn't doing the job for my 300 Hp. 350. It has 2 10" electric fans. I'm thinking I need to do an Aluminum upgrade, there are a lot of choices out there. Any suggestions??? I'm open to all ideas, I just don't want to spent my ride time watching the temp gauge... Thanks
There's soething wrong with your electric fan set up. Do you have any pics of the system you are using? Stock radiator should easily keep 300hp small blocks cool enough. What kinda fans are your twin 10"s? Where did you get them from? Are the pullers or pushers? Alu rad is better solution for sure, but stock rad. should work with 300hp small block...
Safety Car
Joined: Aug 2000
Posts: 3,711
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From: San Antonio TX
I pitty the foo who doesn't go with DeWitts.
Though I do think you got something else going on if a new copper/brass radiator for your app and properly sized electric fans aren't doing the job.
Though I do think you got something else going on if a new copper/brass radiator for your app and properly sized electric fans aren't doing the job.
Race Director
Joined: Mar 2001
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From: Living in the Hartland
Went with a Summit 2 row and dual Flex-a-lite elec fans, works just fine for me. I use a universal ribbed lower hose, it rests on the front crossmember but shows no signs of any real wear after 3 years, it is very thick.
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From: Ansonia CT
Originally Posted by groovyjay
There's soething wrong with your electric fan set up. Do you have any pics of the system you are using? Stock radiator should easily keep 300hp small blocks cool enough. What kinda fans are your twin 10"s? Where did you get them from? Are the pullers or pushers? Alu rad is better solution for sure, but stock rad. should work with 300hp small block...
I just don't want to be having to worry about it, especially if I put the air on.
Le Mans Master
Joined: Nov 2000
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Originally Posted by vettenut2
Sorry no pics, but they are Flex lite twin 10" fans, I got them from Jegs. Don't get me wrong, the car doesn't run that hot, It's just in traffic on a warm day it heads over 220. On the hwg. it stays under 200.
I just don't want to be having to worry about it, especially if I put the air on.
I just don't want to be having to worry about it, especially if I put the air on.
Are they pullers or pushers? Are they mounted on engine side of the radiator or on the other side? Are you using any kind of shroud? Front spoiler? Just trying to get an idea why it runs so hot...
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Joined: Aug 2001
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From: Ansonia CT
Originally Posted by groovyjay
Are they pullers or pushers? Are they mounted on engine side of the radiator or on the other side? Are you using any kind of shroud? Front spoiler? Just trying to get an idea why it runs so hot...
