LS1TECH - Camaro and Firebird Forum Discussion

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-   -   4.8 swap (https://ls1tech.com/forums/new-ls1-owners-newbie-tech/1891711-4-8-swap.html)

Oconto 02-12-2018 02:47 PM

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

ss.slp.ls1 02-12-2018 04:51 PM

Usually the return is a slightly smaller diameter line. Does your fuel rail have the built in regulator?

Oconto 02-12-2018 07:54 PM

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.

Michael Yount 02-12-2018 10:10 PM

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.

Oconto 02-13-2018 07:26 AM


Originally Posted by Michael Yount (Post 19832790)
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.

JoeNova 02-13-2018 08:43 AM


Originally Posted by Oconto (Post 19832703)
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.

Oconto 02-13-2018 09:43 AM


Originally Posted by JoeNova (Post 19832967)
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?

Michael Yount 02-13-2018 12:06 PM

Perhaps, looks something like this?

http://i.imgur.com/nHM4Hgu.jpg

Michael Yount 02-13-2018 06:36 PM

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

http://i.imgur.com/fNSBEN7.jpg

ss.slp.ls1 02-13-2018 11:47 PM

In the last picture I only see a feed, no return.

Oconto 02-15-2018 05:12 PM

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.


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