-8 AN Rails? Were?
The rails are for a Victor E
Tony.
All I can find on Summit is 3/8s and thats -6 right?
Tony.
Do you feel that the 3/8" pipe thread will limit you for 4 cylinders?
If you get a chance look inside the injector opening of a stock rail sometime. Factory rails will support over 700hp without modification. If you look inside the injector opening you will see what point I'm making.
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The rails are for a Victor E
Tony.
Just get a new set of Vic E rails. They're set up to fit exactly and the injector spacing is correct for your already set up manifold.
Those rails have a 9/16" i.d.... More than plenty to feed whatever your building.
If you're running -8an from the tank to the rails, you should have the rails plumbed in parallel with y-blocks. You can feed each rail with either -8an or -6an adapters from summit.
I personally fed each of my rails with -8an and plumbed -6an from the outlet of each rail to the pressure regulator.
Like Nate said, a -6an feed into each rail (coming from Y-block) will support 800rwhp forced induction style. So if your N/A or N20, they will support even more.

