4.8 swap - LS1TECH - Camaro and Firebird Forum Discussion



New LS1 Owners - Newbie Tech Basic Technical Questions & Advice
Sponsored by:
Sponsored by:

4.8 swap

Reply
 
Thread Tools Search this Thread
Old 02-12-2018, 03:47 PM   #1
Registered User
Thread Starter
 
Join Date: Feb 2018
Posts: 5
Default 4.8 swap

Have a 2010 4.8 from a truck. My question is the fuel rail being stock intake. What line is the supply and what one is the return line or how do you tell them apart. Thanks Nate
Oconto is offline   Reply With Quote
Old 02-12-2018, 05:51 PM   #2
TECH Senior Member
iTrader: (36)
 
ss.slp.ls1's Avatar
 
Join Date: Jan 2008
Location: Orange County, CA
Posts: 7,824
Default

Usually the return is a slightly smaller diameter line. Does your fuel rail have the built in regulator?
ss.slp.ls1 is offline   Reply With Quote
Old 02-12-2018, 08:54 PM   #3
Registered User
Thread Starter
 
Join Date: Feb 2018
Posts: 5
Default

No it does not have a regulator. I purchased the LS kit from speedway with regulator. Was going to tie the return from the intake and the return from the regulator together back to fuel cell.
Oconto is offline   Reply With Quote
Old 02-12-2018, 11:10 PM   #4
TECH Fanatic
 
Michael Yount's Avatar
 
Join Date: Jun 2015
Posts: 1,013
Default

If you're going to use the LS style (Corvette) reg -- just tie the supply from the reg into the fuel rail. Block off the manifold return -- the return will be from the REG.
Michael Yount is offline   Reply With Quote
Old 02-13-2018, 08:26 AM   #5
Registered User
Thread Starter
 
Join Date: Feb 2018
Posts: 5
Default

Quote:
Originally Posted by Michael Yount View Post
If you're going to use the LS style (Corvette) reg -- just tie the supply from the reg into the fuel rail. Block off the manifold return -- the return will be from the REG.
Thank you.
Oconto is offline   Reply With Quote
Old 02-13-2018, 09:43 AM   #6
Restricted User
 
Join Date: Mar 2014
Location: Ohio
Posts: 5,370
Default

Quote:
Originally Posted by Oconto View Post
No it does not have a regulator. I purchased the LS kit from speedway with regulator. Was going to tie the return from the intake and the return from the regulator together back to fuel cell.
If your fuel rail has a return line on it, then it has a regulator on it.
JoeNova is online now   Reply With Quote
Old 02-13-2018, 10:43 AM   #7
Registered User
Thread Starter
 
Join Date: Feb 2018
Posts: 5
Default

Quote:
Originally Posted by JoeNova View Post
If your fuel rail has a return line on it, then it has a regulator on it.
How would I tell if it does or not? I was told being a 2010 they didn't have a regulator on them. If so then would I not need to run a regulator and just go from pump to intake?
Oconto is offline   Reply With Quote
Old 02-13-2018, 01:06 PM   #8
TECH Fanatic
 
Michael Yount's Avatar
 
Join Date: Jun 2015
Posts: 1,013
Default

Perhaps, looks something like this?

Michael Yount is offline   Reply With Quote
Old 02-13-2018, 07:36 PM   #9
TECH Fanatic
 
Michael Yount's Avatar
 
Join Date: Jun 2015
Posts: 1,013
Default

Pic of the OP's fuel rail -- driver's side....

Michael Yount is offline   Reply With Quote
Old 02-14-2018, 12:47 AM   #10
TECH Senior Member
iTrader: (36)
 
ss.slp.ls1's Avatar
 
Join Date: Jan 2008
Location: Orange County, CA
Posts: 7,824
Default

In the last picture I only see a feed, no return.
ss.slp.ls1 is offline   Reply With Quote
Old 02-15-2018, 06:12 PM   #11
Registered User
Thread Starter
 
Join Date: Feb 2018
Posts: 5
Default

Thanks to the help from members. We figured out there is no return on this motor. The line in question with the green can is a emission line and not connected at all to the fuel rail. I will be plugging it off and using the corvette style regulator running the return on it to my fuel cell and the feed line to the intake. Thanks Again for all the help. It is awesome to have good resources when unsure.
Oconto is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Running fuel lines to gas tank in truck bed Question again! Chevymanty New LS1 Owners - Newbie Tech 2 01-12-2018 11:32 AM
Ideas of running fuel lines to tank? Chevymanty New LS1 Owners - Newbie Tech 0 12-27-2017 02:11 PM
4.8 crankshaft Rebelfromva Parts Wanted 6 12-05-2017 08:02 PM
Microsquirt people needs some help BTLFEDSS Forced Induction 2 03-22-2017 06:52 PM
Hp 48rat Forced Induction 4 07-23-2016 02:34 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 04:50 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: