347 Cooling Issue

bgddy50 · December 24th, 2007, 02:08 PM

Im running a 347stroker, with stock fan setup with stroud and an aluminum 4 row rad. Drive thru's are the issue or at least long stoplights. Does a 347 realy run that hot that a stock set up cant keep it cool? I may have introduced the problem by raising the motor about 1/2 inch at the mounts which changed the angle of the fan. I had clearance problems with the canton oil pan and Hydraulic lines on top of the rack and pinion. anythoughts are welcome.

Goblin · December 24th, 2007, 02:10 PM

First thing i would check is the thermostat. Could be stuck shut. Always the first to check with overheating problems.

White Thunder · December 24th, 2007, 02:13 PM

can i have your car?.....

id say upgrading your cooling system should fix your problem...i take it you got the short block....did it come with a water pump or did you use a used one.....is a electric?

someone else should chime in that has a lil more experience

White Thunder · December 24th, 2007, 02:14 PM

Originally Posted by Goblin

First thing i would check is the thermostat. Could be stuck shut. Always the first to check with overheating problems.

+1

bgddy50 · December 24th, 2007, 02:19 PM

thormostat checks out its brand new, high flow mechanical water pump installed myself. The motor is a long block from CHP.

woody1 · December 24th, 2007, 02:23 PM

check to make sure the passenger side head gasket is on right, common mistake alot of people make

TurboLX · December 24th, 2007, 02:31 PM

do double fans and a fan switch

Goblin · December 24th, 2007, 02:32 PM

Originally Posted by bgddy50

thormostat checks out its brand new, high flow mechanical water pump installed myself. The motor is a long block from CHP.

Just because its brand new, doesnt mean its working right. Just an idea.

bgddy50 · December 24th, 2007, 02:39 PM

I tested it via the pan with water on the stove and a themostat. it popped at 195

1slo5.0 · December 24th, 2007, 03:55 PM

Driving down the road the car runs at normal temperature but idling or slow speeds it runs hot? If that is the case, your fan is not pulling enough air.

e3sean · December 24th, 2007, 04:23 PM

Originally Posted by bgddy50

thormostat checks out its brand new, high flow mechanical water pump installed myself. The motor is a long block from CHP.

is it faceing the right way

just thought i would ask not saying i have done it or anything...

Goblin · December 24th, 2007, 04:30 PM

Originally Posted by e3sean

is it faceing the right way just thought i would ask not saying i have done it or anything...

That was my next question.

This mistake, i HAVE made.

airforcesvt1 · December 24th, 2007, 08:19 PM

thermosstat would be my first choice!! id replace it anyways with another one.. there cheap enough and easy to swap out anyways!

second when its running, and you pull off the radiator cap, does it bubble up like there is air in the line?? if so its prob a headgasket!! like was said earlier ive seen this problem quite a few times!

and i bet ud be good with the fan and shroud, however i prefer dual electric fans and shroud!! there nice!! and you free up room!

airforcesvt1 · December 24th, 2007, 08:24 PM

ps i run a 347 aswell and ive never had my car go over 200 before! in the hot summer texas heat (where my wifes family is from) and i was supporting over 500horse at the wheels!!

nolife · December 24th, 2007, 11:46 PM

Since this thread has a thermostat question in it already...
Does anyone have a suggestion for a specific brand of thermostat? I have a 185 "hi flow" in my other Mustang but bought it so long ago I do not remember what brand or where I got it. Local Autozone only had "regular flow" 185 and 192/195. Another note, any opinions on 185 or 195 in a car running 10# boost?

78mach1 · December 25th, 2007, 12:06 AM

Originally Posted by airforcesvt1

thermosstat would be my first choice!! id replace it anyways with another one.. there cheap enough and easy to swap out anyways!

second when its running, and you pull off the radiator cap, does it bubble up like there is air in the line?? if so its prob a headgasket!! like was said earlier ive seen this problem quite a few times!

and i bet ud be good with the fan and shroud, however i prefer dual electric fans and shroud!! there nice!! and you free up room!

he wasnt saying that the head gasket was bad.................

he was saying maybe he put it on backwards so one of the water jackets were block by the head gasket, via doesnt cool right....

Tony_90fox · December 25th, 2007, 04:19 AM

Originally Posted by nolife

Since this thread has a thermostat question in it already...
Does anyone have a suggestion for a specific brand of thermostat? I have a 185 "hi flow" in my other Mustang but bought it so long ago I do not remember what brand or where I got it. Local Autozone only had "regular flow" 185 and 192/195. Another note, any opinions on 185 or 195 in a car running 10# boost?

No specific brand that i run, i just walk into the parts store and ask for a 180* t-stat. They have always worked for me.

e3sean · December 25th, 2007, 12:19 PM

is anyone running stock cooling system with a 347 out there?? i dont think i could get away with it here.

Stangzilla · December 25th, 2007, 12:35 PM

Originally Posted by 78mach1

he wasnt saying that the head gasket was bad.................

he was saying maybe he put it on backwards so one of the water jackets were block by the head gasket, via doesnt cool right....

Well he said he bought a long block so the heads came installed..

Stangzilla · December 25th, 2007, 12:37 PM

Originally Posted by nolife

Since this thread has a thermostat question in it already...
Does anyone have a suggestion for a specific brand of thermostat? I have a 185 "hi flow" in my other Mustang but bought it so long ago I do not remember what brand or where I got it. Local Autozone only had "regular flow" 185 and 192/195. Another note, any opinions on 185 or 195 in a car running 10# boost?

Moroso has a hi flow stat.. I have a 180 high-flow Moroso in mine..

December 24th, 2007, 02:08 PM	#1
bgddy50 Newbie 1991 LX Mustang Join Date: Aug 2006 Location: Yuba City CA Posts: 36 iTrader: 0 reviews	347 Cooling Issue Im running a 347stroker, with stock fan setup with stroud and an aluminum 4 row rad. Drive thru's are the issue or at least long stoplights. Does a 347 realy run that hot that a stock set up cant keep it cool? I may have introduced the problem by raising the motor about 1/2 inch at the mounts which changed the angle of the fan. I had clearance problems with the canton oil pan and Hydraulic lines on top of the rack and pinion. anythoughts are welcome. __________________ CHP 347, AFR 185's, T-56, Maximum motor sport complete suspension, 3. 55 gears

December 24th, 2007, 02:10 PM	#2
Goblin Hardcore Enthusiast 88mm Join Date: Apr 2007 Location: Tucson, AZ Posts: 2,111 iTrader: 0 reviews	First thing i would check is the thermostat. Could be stuck shut. Always the first to check with overheating problems. __________________

December 24th, 2007, 02:19 PM	#5
bgddy50 Newbie 1991 LX Mustang Join Date: Aug 2006 Location: Yuba City CA Posts: 36 iTrader: 0 reviews	thormostat checks out its brand new, high flow mechanical water pump installed myself. The motor is a long block from CHP. __________________ CHP 347, AFR 185's, T-56, Maximum motor sport complete suspension, 3. 55 gears

December 24th, 2007, 02:31 PM	#7
TurboLX I Post Entirely Way Too Much 1988 Mustang LX Turbo Join Date: Oct 2006 Location: NY Posts: 8,792 Blog Entries: 1 iTrader: 0 reviews	do double fans and a fan switch __________________ 1988 LX Coupe 2.5L, GT35R, 44mm WG, 32psi, C16.

December 24th, 2007, 02:39 PM	#9
bgddy50 Newbie 1991 LX Mustang Join Date: Aug 2006 Location: Yuba City CA Posts: 36 iTrader: 0 reviews	I tested it via the pan with water on the stove and a themostat. it popped at 195 __________________ CHP 347, AFR 185's, T-56, Maximum motor sport complete suspension, 3. 55 gears

December 24th, 2007, 02:23 PM	#6
woody1 Enthusiast Join Date: Nov 2006 Posts: 559 iTrader: 0 reviews	check to make sure the passenger side head gasket is on right, common mistake alot of people make

December 24th, 2007, 03:55 PM	#10
1slo5.0 MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: North Fond du Lac, Wisconsin Posts: 11,375 iTrader: 1 reviews	Driving down the road the car runs at normal temperature but idling or slow speeds it runs hot? If that is the case, your fan is not pulling enough air. __________________ My daily driver has 16 cylinders and 4400hp @ 1000 rpm.... ***1988 Mustang GT - Stock....almost

December 24th, 2007, 08:19 PM	#13
airforcesvt1 Newbie Join Date: Dec 2007 Posts: 49 iTrader: 0 reviews	thermosstat would be my first choice!! id replace it anyways with another one.. there cheap enough and easy to swap out anyways! second when its running, and you pull off the radiator cap, does it bubble up like there is air in the line?? if so its prob a headgasket!! like was said earlier ive seen this problem quite a few times! and i bet ud be good with the fan and shroud, however i prefer dual electric fans and shroud!! there nice!! and you free up room!

December 24th, 2007, 08:24 PM	#14
airforcesvt1 Newbie Join Date: Dec 2007 Posts: 49 iTrader: 0 reviews	ps i run a 347 aswell and ive never had my car go over 200 before! in the hot summer texas heat (where my wifes family is from) and i was supporting over 500horse at the wheels!!

December 24th, 2007, 11:46 PM	#15
nolife Hardcore Enthusiast 91GT, 88GT, 02GT Join Date: Dec 2006 Posts: 2,878 Blog Entries: 3 iTrader: 0 reviews	Since this thread has a thermostat question in it already... Does anyone have a suggestion for a specific brand of thermostat? I have a 185 "hi flow" in my other Mustang but bought it so long ago I do not remember what brand or where I got it. Local Autozone only had "regular flow" 185 and 192/195. Another note, any opinions on 185 or 195 in a car running 10# boost? __________________

December 25th, 2007, 12:19 PM	#18
e3sean I Post Entirely Way Too Much 1988 lx 9.68@142 Join Date: Nov 2007 Location: goldsboro NC Posts: 5,596 iTrader: 0 reviews	is anyone running stock cooling system with a 347 out there?? i dont think i could get away with it here.

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