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Over heating .!
#1007069
06/05/11 11:03 AM
06/05/11 11:03 AM
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Joined: Jun 2008
Posts: 768
Maryville tn
67coronetman
OP
super stock
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OP
super stock
Joined: Jun 2008
Posts: 768
Maryville tn
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I have a fairly good built 440 bored .040 over Indy heads mild port work oil mods done and a solid lift cam & 1.6 roller rockers TTI step headers and a 727 trans with a boss hog 3200-3600 stall & 391 gears i have a big rad & fan shroud as seen in the picture but i don't have a clutch fan on it and running a 160 stat what could it be.???
Maybe timing. Or what can anyone offer some simple ideas.!
I ask these things cause i have a friend in NY that has a 500ci big block motor in a 69 dart that is a true 9 sec street driven car and he is running a slant six rad with a 160 stat & factory shroud & clutch fan and even on the hottest days it only get to 200 period.!
Last edited by 67coronetman; 06/05/11 10:29 PM.
Old car are me......
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Re: Over heating .!
[Re: 67coronetman]
#1007070
06/05/11 11:58 AM
06/05/11 11:58 AM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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#1 is what speed does it overheat. What temp is it reaching? Overheating since built? timing/mixture in ballpark? I'd remove/check the stat for a quick/easy test & when you solve it I'd go to at least a 180 but that's a sep issue.
live every 24 hour block of time like it's your last day on earth
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Re: Over heating .!
[Re: ademon]
#1007072
06/05/11 12:11 PM
06/05/11 12:11 PM
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Joined: Nov 2004
Posts: 843
Suffolk,VA
ireland383
super stock
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super stock
Joined: Nov 2004
Posts: 843
Suffolk,VA
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Quote:
that shroud looks like it would impede air flow at highway speed
 What temp is it running to? I would think a clutch fan with a factory shroud will work better. 
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Re: Over heating .!
[Re: ademon]
#1007075
06/05/11 10:19 PM
06/05/11 10:19 PM
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Joined: Jun 2008
Posts: 768
Maryville tn
67coronetman
OP
super stock
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OP
super stock
Joined: Jun 2008
Posts: 768
Maryville tn
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I will check that but it will pull lots of air flow thru the radiator alot very good.! Quote:
that shroud looks like it would impede air flow at highway speed
Old car are me......
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Re: Over heating .!
[Re: feets]
#1007076
06/05/11 10:21 PM
06/05/11 10:21 PM
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Joined: Jun 2008
Posts: 768
Maryville tn
67coronetman
OP
super stock
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OP
super stock
Joined: Jun 2008
Posts: 768
Maryville tn
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To tight as how.? it has room around the fan and pulls air thru very hard so i am just frustarated.! Quote:
Quote:
that shroud looks like it would impede air flow at highway speed
BINGO! That shroud is too tight.
Old car are me......
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Re: Over heating .!
[Re: 67coronetman]
#1007077
06/05/11 10:26 PM
06/05/11 10:26 PM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
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When you're driving at highway speed lots of air passes through the radiator. If the shroud is too tight the air can't get through. That means air can't pick up heat from the radiator. The radiator gets hot and you overheat.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: Over heating .!
[Re: feets]
#1007079
06/05/11 10:32 PM
06/05/11 10:32 PM
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Joined: Jun 2008
Posts: 768
Maryville tn
67coronetman
OP
super stock
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OP
super stock
Joined: Jun 2008
Posts: 768
Maryville tn
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Ok how much room should be from the fan blades to the edge of the shroud.? This is my worst problem i have had with any car ever.
Old car are me......
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Re: Over heating .!
[Re: 67coronetman]
#1007080
06/05/11 11:15 PM
06/05/11 11:15 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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Want the blades (not the tip to shroud clearance but front to rear depth) ~1/2-2/3 into the shroud but I say that's not it . what speed is it overheating (& how hot)
live every 24 hour block of time like it's your last day on earth
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Re: Over heating .!
[Re: 67coronetman]
#1007083
06/06/11 01:00 AM
06/06/11 01:00 AM
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Joined: Jul 2006
Posts: 4,319
Puyallup, WA
StealthWedge67
master
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master
Joined: Jul 2006
Posts: 4,319
Puyallup, WA
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1st thing to check is the thermostat. Especially this time of year if the car has sat a lot over the winter. I just got done replacing a Mr. Gasket high flow that was stuck closed in my 451.
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
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