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Re: Running hot and running out of ideas 67 Belvedere
[Re: feets]
#1226320
05/05/12 03:28 PM
05/05/12 03:28 PM
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Joined: Nov 2003
Posts: 3,426
Dandridge TN
Dabee
master
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master
Joined: Nov 2003
Posts: 3,426
Dandridge TN
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Quote:
He verified that his radiator is doing it's job. There's no need to look at replacing it.
He needs to find the source of the heat.
A loose converter dumping trans heat into the radiator or blown head gasket would easily cause that problem.
I wasn’t suggesting he replace his radiator. I know he said he had good a temperature drop cross the radiator. I was just relating a similar experience with my car hoping it would help him out. I also had a 30 degree plus drop across the radiator but it still wouldn’t cool. When I installed the new radiator and electric fan I left everything else the same. I am convinced even though the three core radiators fin design was inferior installing the electric fan is what cured my cooling problem.
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Re: Running hot and running out of ideas 67 Belvedere
[Re: Dabee]
#1226321
05/05/12 06:07 PM
05/05/12 06:07 PM
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Joined: Nov 2005
Posts: 210
mass,usa
sickhemi
enthusiast
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enthusiast
Joined: Nov 2005
Posts: 210
mass,usa
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did you paint the radiator?
1968 gts 355 r3 six speed efi with irs in progress and 1969 convt 440 stage 6 efi 5spd dana
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Re: Running hot and running out of ideas 67 Belvedere
[Re: Challenger 1]
#1226323
05/05/12 06:42 PM
05/05/12 06:42 PM
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Joined: Jan 2003
Posts: 2,111
Bowie, MD
Reggie
top fuel
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top fuel
Joined: Jan 2003
Posts: 2,111
Bowie, MD
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Quote:
Quote:
Can you turn the clutch fan by hand with the engine hot? There should be ALOT of resistance.
This is a very real possibilty, it happened to me. New fan clutch and it was back to normal.
Good luck with it.
I'm betting it a at least a couple factors, not just one.
I've seen a bad fan clutch cause overheating before too, so that's another possibility. A guy came into my Dad's gas station with a Chrysler that was overheating. The fan was barely turning while the engine was running.
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Re: Running hot and running out of ideas 67 Belvedere
[Re: Belvedere1]
#1226324
05/05/12 06:48 PM
05/05/12 06:48 PM
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Joined: Nov 2005
Posts: 210
mass,usa
sickhemi
enthusiast
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enthusiast
Joined: Nov 2005
Posts: 210
mass,usa
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do you have headers on the car and are they uncoated. if the car is running lean at idle it the headers will get real hot
1968 gts 355 r3 six speed efi with irs in progress and 1969 convt 440 stage 6 efi 5spd dana
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Re: Running hot and running out of ideas 67 Belvedere
[Re: 6PakBee]
#1226330
06/14/12 07:49 AM
06/14/12 07:49 AM
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Joined: Jul 2003
Posts: 1,212
Canton, Ohio
Crazy68Dart
pro stock
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pro stock
Joined: Jul 2003
Posts: 1,212
Canton, Ohio
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Hi, here is a write-up I did on my 383 cooling issues. You mentioned you are using the 6-vane pump, you might want to get the 8 vane version. The 6-van is used with an A/C car with a smaller pully, which spins the pump harder. The 8-vane pump is used with a slightly larger pulley on a non-A/C car. Which pulleys are you running? You problem to me sounds either coolant flow related or more likely airflow related (especially considering your clutch fan is not doing the job). This thread is now "archive status", which means no pics, which sucks... if you want the pics of the pump I can dig them up. http://www.bigblockdart.com/forum/archive/index.php/t-20229.html
383, Hemi 4-Speed, AlterKtion, D60
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