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

Hose Recommendation For 5.0l With Big Block Radiator

  • Thread starter Thread starter NotMyStang
  • Start date Start date Jul 22, 2013
N

NotMyStang

20+ Year Stangneter
Oct 14, 2003
32
1
9
Jul 22, 2013
#1
  • Jul 22, 2013
  • #1
I have a Griffin big block radiator (Cu-00042) and a 5.0L block with the brackets from a 80's Mustang in my 1967 Mustang (in progress). I have searched the forum and see people recommending using flex lines, or the lower hoses from a Maverick or Bronco II, but they all seem to have a small block radiator.

With the BB Radiator the inlet is pretty close to the alternator. I know others have run into this problem, but I cannot seem to find them. Has anyone else run into this and how did you solve it? What upper and lower hoses did you use on your 5.0L engine with late '80's brackets and big block radiator?

Thanks
 

65fastbackresto

Active Member
Apr 13, 2007
1,229
7
39
AR
Jul 22, 2013
#2
  • Jul 22, 2013
  • #2
This is cheesy but it`ll work, go to a muffler shop, and have pipe sized for the small end, and stretched to the right size at the other end. A good shop can fab it all the way from one end to the other, but don`t get your hopes up, that would be pricey.

You just need the pipe to adapt one size to another, keep it simple.
 
N

NotMyStang

20+ Year Stangneter
Oct 14, 2003
32
1
9
Jul 31, 2013
#3
  • Jul 31, 2013
  • #3
I went to Advance Auto Parts and bought about 10 different hoses based on the results of some more aggressive online searching. I ended up using Dayco C71280 for the upper, and a Dayco C70438 for the lower
hoses. The upper hose only needed about 1 inch, max, removed from the thermostat housing end. The hose clears the alternator and serpentine setup very well. I originally thought I was going to need to couple two butchered hoses together to make this work. The lower hose needed some trimming as well, but I don't remember which end. Also be sure to use the anti-collapsing spring to ensure that the hose does not kink. To me the setup looks "OE" and only cost about $24 for the hoses I used. The other eight hoses did get returned.


Again this is the setup I'm using:
Griffin Radiator:

Part Number: CU-00042
Overall Height (in): 21
Overall Width (in): 22.56
Overall Thickness (in):
Core Height (in): 15.5
Core Width (in): 23
Core Thickness (in): 2.68
Row Quantity: 2
Radiator Style: Down Flow
Radiator Finish: Natural
Transmission Cooler: No
Inlet Location: Passenger Top
Outlet Location: Driver Bottom
Inlet Size: 1.5
Outlet Size: 1.75
Tube Size: 1.25 (in)
Fan Included: Yes, and the Shroud, Wiring, and Radiator Cap are included
Notes: V8 Ford "LATE MODEL" & OEM Big Block (EXC. MODULAR)

Being used with a 5.0L block with the serpentine setup from a 87-93 Mustang. The Waterpump is on the driver side, and the inlet for the radiator is on the passenger side. I believe the Griffin Radiator is pretty close to a Big Block Radiator for 1967 and 68 Mustangs.









 
Reactions: Foot Hill

Foot Hill

Active Member
Dec 9, 2014
82
55
28
Mar 9, 2019
#4
  • Mar 9, 2019
  • #4
NotMyStang said:
I went to Advance Auto Parts and bought about 10 different hoses based on the results of some more aggressive online searching. I ended up using Dayco C71280 for the upper, and a Dayco C70438 for the lower
hoses. The upper hose only needed about 1 inch, max, removed from the thermostat housing end. The hose clears the alternator and serpentine setup very well. I originally thought I was going to need to couple two butchered hoses together to make this work. The lower hose needed some trimming as well, but I don't remember which end. Also be sure to use the anti-collapsing spring to ensure that the hose does not kink. To me the setup looks "OE" and only cost about $24 for the hoses I used. The other eight hoses did get returned.


Again this is the setup I'm using:
Griffin Radiator:

Part Number: CU-00042
Overall Height (in):
21
Overall Width (in):
22.56
Overall Thickness (in):
Core Height (in):
15.5
Core Width (in):
23
Core Thickness (in):
2.68
Row Quantity:
2
Radiator Style:
Down Flow
Radiator Finish:
Natural
Transmission Cooler:
No
Inlet Location:
Passenger Top
Outlet Location:
Driver Bottom
Inlet Size:
1.5
Outlet Size:
1.75
Tube Size:
1.25 (in)
Fan Included:
Yes, and the Shroud, Wiring, and Radiator Cap are included
Notes:
V8 Ford "LATE MODEL" & OEM Big Block (EXC. MODULAR)

Being used with a 5.0L block with the serpentine setup from a 87-93 Mustang. The Waterpump is on the driver side, and the inlet for the radiator is on the passenger side. I believe the Griffin Radiator is pretty close to a Big Block Radiator for 1967 and 68 Mustangs.






Click to expand...
WOW!
Now that’s what I call a helpful post!
thank you for taking your time to do that, you just helped me out too as I am in the same exact situation
this is what forums are all about
Thank you sir !
 
You must log in or register to reply here.

Similar threads

C
SN95 Another Coyote swap list
  • catkiller
  • May 10, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
0
Views
131
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 10, 2026
catkiller
C
6
Hey all,I’m putting together a 302 for my 1968 Mustang and wanted to post the combo + some questions to make sure I’m not missing crucial
  • 68_Disgustang
  • Feb 22, 2026
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
4
Views
907
1965 - 1973 Classic Mustangs -General/Talk- Jun 20, 2026
gray owl
G
M
Progress Thread mnky99 2001 V6 evap core, ac compressor, heater core replacement
  • mnky99
  • Sep 5, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
1
Views
516
1996 - 2004 SN95 Mustang -General/Talk- Sep 5, 2025
mnky99
M
E
Finished my Fox Hydroboost Install - Tips
  • Engineer Duane
  • Apr 9, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
4
Views
1K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 5, 2025
Engineer Duane
E
0
V6 to V8 Swap info
  • 02_2v_Curtis
  • Jan 11, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
0
Views
733
1996 - 2004 SN95 Mustang -General/Talk- Jan 11, 2026
02_2v_Curtis
0
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?