• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

Heater Hoses

  • Thread starter Thread starter cougar_68
  • Start date Start date Aug 29, 2004

cougar_68

Founding Member
Jun 6, 2001
849
0
0
Garrett, IN
Aug 29, 2004
#1
  • Aug 29, 2004
  • #1
Hi, I'm doing a 5.0L EFI swap. Does it matter which heater hose goes where? I know one goes to the intake and one goes to the water pump, but I don't know which (upper/lower) goes to which place or if it matters.

P.S. Why can't I search???
 

crushnut

New Member
Apr 27, 2003
870
0
0
Oregon
Aug 29, 2004
#2
  • Aug 29, 2004
  • #2
cougar_68 said:
Why can't I search???
Click to expand...

I dont know either, i posted a thread in the talk section about it. Kinda pisses me off
 
O

Ozsum2

New Member
Jul 28, 2004
695
1
0
Aug 30, 2004
#3
  • Aug 30, 2004
  • #3
Well, the pictures in my Ford Shop Manual show the intake hose going to the bottom and the WP hose going to the top.
 

WORTH

20+ Year Stangneter
Nov 18, 2002
2,166
44
98
Cape Cod, Ma.
Aug 30, 2004
#4
  • Aug 30, 2004
  • #4
cougar_68 said:
Hi, I'm doing a 5.0L EFI swap. Does it matter which heater hose goes where? I know one goes to the intake and one goes to the water pump, but I don't know which (upper/lower) goes to which place or if it matters.

P.S. Why can't I search???
Click to expand...

It doesn't matter, it just goes in one end of the heater and out the other, you can put them on which ever way is the easiest route.
 
O

Ozsum2

New Member
Jul 28, 2004
695
1
0
Aug 30, 2004
#5
  • Aug 30, 2004
  • #5
WORTH said:
It doesn't matter, it just goes in one end of the heater and out the other, you can put them on which ever way is the easiest route.
Click to expand...



Well, it does a little bit but probably not enough to matter. My diagram shows the direction of circulation, and since the inlet and outlet on the heater core are upper and lower, crossing the hoses may mean the flow has to go uphill.
 

cougar_68

Founding Member
Jun 6, 2001
849
0
0
Garrett, IN
Aug 30, 2004
#6
  • Aug 30, 2004
  • #6
Thanks a bunch!! Maybe I will get to work on this tomorrow then. Will it hurt if I take out one of the intake bolts and then put it back in and torque it back down?

The five liter motor uses this "rail" thing and part of the bracket bolts down to the intake using an intake bolt.

Thanks again for your help!
 
D

D.Hearne

New Member
Sep 29, 2000
11,730
6
0
south louisiana
Aug 30, 2004
#7
  • Aug 30, 2004
  • #7
Ozsum2 said:
Well, it does a little bit but probably not enough to matter. My diagram shows the direction of circulation, and since the inlet and outlet on the heater core are upper and lower, crossing the hoses may mean the flow has to go uphill.
Click to expand...
Only someone who lives in Leadville Co. ( highest city in the USA) would worry about the coolant having to flow up hill Whatcha think it does going from the block UP to the heads and UP out of the intake into the heater hose Not to mention that initial steep pull up from the bottom of the radiator UP to the water pump.
 
O

Ozsum2

New Member
Jul 28, 2004
695
1
0
Aug 30, 2004
#8
  • Aug 30, 2004
  • #8
D.Hearne said:
Only someone who lives in Leadville Co. ( highest city in the USA) would worry about the coolant having to flow up hill Whatcha think it does going from the block UP to the heads and UP out of the intake into the heater hose Not to mention that initial steep pull up from the bottom of the radiator UP to the water pump.
Click to expand...


Hey, we need all the heat we can get. Already having to build a fire at nights.
 
D

D.Hearne

New Member
Sep 29, 2000
11,730
6
0
south louisiana
Aug 31, 2004
#9
  • Aug 31, 2004
  • #9
Yea, that's nice, fires at night. But then again that's normal for even the warmest summer days in Leadville. It got down to 68 degrees here last night, we've had a somewhat "cool" summer here this year. Two weeks ago a front came thru and it was down to 60 at night Stayed that way for almost a week.
 
O

Ozsum2

New Member
Jul 28, 2004
695
1
0
Aug 31, 2004
#10
  • Aug 31, 2004
  • #10
D.Hearne said:
Yea, that's nice, fires at night. But then again that's normal for even the warmest summer days in Leadville. It got down to 68 degrees here last night, we've had a somewhat "cool" summer here this year. Two weeks ago a front came thru and it was down to 60 at night Stayed that way for almost a week.
Click to expand...


We had snow about 200' above us 5 days ago. It took 2 days to melt off.
 

whwright

Member
Jun 3, 2003
150
0
16
Oklahoma City
Aug 31, 2004
#11
  • Aug 31, 2004
  • #11
It won't hurt a thing to take out an intake bolt and torque it back.
 

cougar_68

Founding Member
Jun 6, 2001
849
0
0
Garrett, IN
Aug 31, 2004
#12
  • Aug 31, 2004
  • #12
Thanks! For the reply.

It seems like I will never get this damn thing done. Hopefully by spring.
 
You must log in or register to reply here.

Similar threads

S
1965 Mustang with 80s 5.0 engine in it Power Steering hose or connection ID?
  • spearce
  • May 19, 2026
  • Classic Mustang Specific Tech
Replies
2
Views
116
Classic Mustang Specific Tech Jun 8, 2026
AeroCoupe
L
Engine New guy heater hose question. 85 gt 4bbl.
  • linemech31
  • Jan 17, 2026
  • Fox 5.0 Mustang Tech
Replies
7
Views
353
Fox 5.0 Mustang Tech Jan 20, 2026
General karthief
Engine Bleeding air in the heater core
  • keel
  • Apr 2, 2026
  • Fox 5.0 Mustang Tech
Replies
10
Views
246
Fox 5.0 Mustang Tech Apr 23, 2026
limp
M
2001 v6 heater hose quick connect question
  • mnky99
  • Sep 24, 2025
  • SN95 V6 Mustang Tech
Replies
8
Views
605
SN95 V6 Mustang Tech Sep 26, 2025
mnky99
M
B
Saying Hi
  • BriansNSane
  • Dec 20, 2025
  • The Welcome Wagon
Replies
5
Views
305
The Welcome Wagon Dec 21, 2025
BriansNSane
B
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?