bobbysgirl
Forum Newbie
Posts: 1
Reg: 07-08-12
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 07-08-12 03:19 PM - Post#2245799
I have a 72 nova with a 350 small block motor in it we rebuilt. put new main, rings on it we put different heads on it then what was on it before we tore it down now it is getting hot. when it is running it reaches temps of 230 and greater. when we cut it off we hear the water boiling in it. Can anyone tell me what may be the problem with it, its driving us crazy because it didnt run hot before we tore it down and reason why we tore it down is bc it had no oil pressure, now the oil pressure is at 75.
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 bowtieollie
ChevyTalk Subject Matter Expert
Posts: 20882
Loc: See the USA in your Chevr...
Reg: 12-06-99
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07-09-12 02:41 PM - Post#2246223
In response to bobbysgirl
Welcome to Chevytalk!
What thermostat are you running.
Is the radiator cap good?
What is the temperature of the lower radiator hose (if the thermostat is open)
You should have a 40 degree difference between the top and bottom hoses if EVERYTHING is working properly.
You have:
1 - a stuck closed thermostat
2 - a defective water pump
3 - a seriously clogged radiator
4 - a bad fan clutch
I put them in order of diagnosis and most likely cause.
Bowtieollie
Chevytalk.com Moderator |
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 WagonMan
"3rd Year" Silver Supporting Member
Posts: 1265
Age: 65
Loc: SW Kansas
Reg: 10-26-04
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07-11-12 06:24 PM - Post#2247197
In response to bowtieollie
Did you happen to put the intake gaskets on backwards and block the water passages?
Charles
57 210 4dr. Wagon(bought '82)
-350/700r4 Mild Custom
56 BA 4dr. ht.(bought '98)
-265/TH350 Mostly Stock
29 Ford Sedan(bought '75)
-4.3L/TH350(in progress)
53 Chevy 3100 (bought '96)
-250 I6/TH350 |
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71 malibu project
Forum Newbie
Posts: 3
Reg: 08-03-12
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08-03-12 11:46 AM - Post#2255369
In response to WagonMan
that's really all i can think of, i'd check the water pump or the fan clutch, it's gotta be one or the other
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drtyler (4)
