how hot is hot? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

hjalbert · 04-30-2002, 12:46 PM

ok, i have a 160 degree thermostat in my truck with a 350. just runinng around town and what not i run about 180-190, but when i am on the interstate, it will go all the way up to about 215 if i am not careful of my speed, unfortunately my speedometer is busted, so i dont know how fast is to fast, to the point where it is getting hot, so my question is, how hot should it go? i know the water pump works, the radiator could probalbly be replaced, since it is old and like ony a one core or something like that thanks

case_bt · 04-30-2002, 12:53 PM

sounds like your radiator because your truck should be running cooler on the interstate
I have a 160 stat and I run about 170 on the freeway and about 190 in the city and I'm in texas using a single 16" electric fan no a/c

see how hot it will get at idle if your radiator needs to be reworked you should see high temps at idle and always check out your fan. because that is when It has to work the hardest.

[This message has been edited by case_bt (edited April 30, 2002).]

Longhorn Man · 04-30-2002, 09:31 PM

I have a 160 in mine, and in town I MIGHT see 170.
I only have a 2 core rad, and no fan shroud.

------------------
'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
If you need a pic posted, E-mail me at longhornmail@yahoo.com
Andy, in Columbus Ohio

hjalbert · 04-30-2002, 10:11 PM

this is going to sound silly, but i have even taken of my inner fenders for better cooling ( and thwe fact they were rusted out any way)m man, i guess yall got it good, i am going to buy a 4 core radiator very soon (if my fiance will let me) so i am trying to figure out, how hot is too hot, still no answwert to that question, what tempature does the H on the factory guages represent???? thanks

Longhorn Man · 04-30-2002, 10:20 PM

While I can't tell you what H is on your guage...(I never trust stock ones) I can tell yopu to look at your oil guage. Ig the motor is about to melt down, the oil will respond first by getting as thin as W.D>40, and show ans a near zero reading on your guage.

------------------
'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
If you need a pic posted, E-mail me at longhornmail@yahoo.com
Andy, in Columbus Ohio

Johns70 · 04-30-2002, 10:29 PM

I think 220 is as high as you'd want to go before any serious damage occurs, i would change the oil more often if the truck sees regular use, heat breaks down oil so after little time the viscosity is no longer there in turn does not lubricate or cool, yes oil cools the motor as much as the coolant does. i'd replace that radiator with a least a 3 core, as soon as possible.

------------------
project 70 chev swb rebuilt 396bb{402}rebuilt th-400 3.73 limited slip 4/5 drop

04-30-2002, 12:46 PM	#1
hjalbert cracker Join Date: Sep 2001 Location: Wilmington, NC Posts: 1,021	how hot is hot? ok, i have a 160 degree thermostat in my truck with a 350. just runinng around town and what not i run about 180-190, but when i am on the interstate, it will go all the way up to about 215 if i am not careful of my speed, unfortunately my speedometer is busted, so i dont know how fast is to fast, to the point where it is getting hot, so my question is, how hot should it go? i know the water pump works, the radiator could probalbly be replaced, since it is old and like ony a one core or something like that thanks __________________ FOUNDING MEMBER OF THE DRUM BRAKE CLUB Harry John Albert III located in Phoenix, AZ 1972 GMC JIMMY, 1969 lwb Chevy Frame, 1999 bmw k1200 ltc 1992 Kawasaki concours 1991 bmw k75 1973 cortez motorhome

04-30-2002, 10:11 PM	#4
hjalbert cracker Join Date: Sep 2001 Location: Wilmington, NC Posts: 1,021	this is going to sound silly, but i have even taken of my inner fenders for better cooling ( and thwe fact they were rusted out any way)m man, i guess yall got it good, i am going to buy a 4 core radiator very soon (if my fiance will let me) so i am trying to figure out, how hot is too hot, still no answwert to that question, what tempature does the H on the factory guages represent???? thanks __________________ FOUNDING MEMBER OF THE DRUM BRAKE CLUB Harry John Albert III located in Phoenix, AZ 1972 GMC JIMMY, 1969 lwb Chevy Frame, 1999 bmw k1200 ltc 1992 Kawasaki concours 1991 bmw k75 1973 cortez motorhome

04-30-2002, 10:29 PM	#6
Johns70 Registered User Join Date: Dec 2001 Location: Spring Creek, nevada. U.S.A. Posts: 456	I think 220 is as high as you'd want to go before any serious damage occurs, i would change the oil more often if the truck sees regular use, heat breaks down oil so after little time the viscosity is no longer there in turn does not lubricate or cool, yes oil cools the motor as much as the coolant does. i'd replace that radiator with a least a 3 core, as soon as possible. ------------------ project 70 chev swb rebuilt 396bb{402}rebuilt th-400 3.73 limited slip 4/5 drop __________________ 69 chevy short wide box project 70 GMC jimmy project

04-30-2002, 12:53 PM	#2
case_bt Registered User Join Date: Jan 2002 Location: willis tx Posts: 374	sounds like your radiator because your truck should be running cooler on the interstate I have a 160 stat and I run about 170 on the freeway and about 190 in the city and I'm in texas using a single 16" electric fan no a/c see how hot it will get at idle if your radiator needs to be reworked you should see high temps at idle and always check out your fan. because that is when It has to work the hardest. [This message has been edited by case_bt (edited April 30, 2002).]

04-30-2002, 09:31 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	I have a 160 in mine, and in town I MIGHT see 170. I only have a 2 core rad, and no fan shroud. ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. If you need a pic posted, E-mail me at longhornmail@yahoo.com Andy, in Columbus Ohio

04-30-2002, 10:20 PM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	While I can't tell you what H is on your guage...(I never trust stock ones) I can tell yopu to look at your oil guage. Ig the motor is about to melt down, the oil will respond first by getting as thin as W.D>40, and show ans a near zero reading on your guage. ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. If you need a pic posted, E-mail me at longhornmail@yahoo.com Andy, in Columbus Ohio



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