The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain > LSx Swaps

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 10-19-2021, 10:55 AM   #1
chevyrides
Registered User
 
Join Date: Apr 2018
Location: Campbell River, BC
Posts: 7
1978 upper radiator hose 4.8 swap

I have read that people are using the stock 1999-2006 upper hose for their swap. The radiator side of this hose is 1.25" I.D. and my stock radiator is about 1.5". Are they using a 1.25" - 1.5" reducer or do some radiators have a 1.25" connector?
chevyrides is offline   Reply With Quote
Old 10-19-2021, 01:41 PM   #2
tinydb84
Registered User
 
tinydb84's Avatar
 
Join Date: Jul 2009
Location: San Jose Ca
Posts: 2,871
Re: 1978 upper radiator hose 4.8 swap

Quote:
Originally Posted by chevyrides View Post
I have read that people are using the stock 1999-2006 upper hose for their swap. The radiator side of this hose is 1.25" I.D. and my stock radiator is about 1.5". Are they using a 1.25" - 1.5" reducer or do some radiators have a 1.25" connector?
My upper and lower hoses matched my radiator but I am using a 75 C20 radiator.

ICT Billet makes an adapter: https://www.amazon.com/Splice-Couple...s%2C220&sr=8-4
__________________
David
Used parts build: http://67-72chevytrucks.com/vboard/s...d.php?t=638991
My brother's Nova: http://www.67-72chevytrucks.com/vboa...d.php?t=727985
Rear suspension rework: http://www.67-72chevytrucks.com/vboa...d.php?t=750557
Instagram: myfabguy
tinydb84 is offline   Reply With Quote
Old 10-23-2021, 11:14 AM   #3
chevyrides
Registered User
 
Join Date: Apr 2018
Location: Campbell River, BC
Posts: 7
Re: 1978 upper radiator hose 4.8 swap

I ended up buying a Spectra Premium CU161 radiator off Amazon and the 1999-2006 upper and lower radiator hoses worked perfect. The upper hose connection was stepped 1-1/4" - 1-1/2"
chevyrides is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 12:24 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com