NNBS intake swap on a return style fuel system pics and opinions
Dec 23, 2017 | 04:50 AM
#13
Maybe 15-20 over a older truck intake? Not really sure, My 02 im using this intake on is boosted and I got this intake in a swap for the stock little alternator that I swapped out with a 145 amp one so basically free. Heard they do offer gains so win win for me.
Dec 23, 2017 | 06:14 PM
#14
This is how I'm going to run it. I used return style flex-fuel rails with injector spacers and everything clears fine. Injectors are marine 8.1L (stock height). I made little adapters to bolt the rails to the intake but pretty straight forward.
Dec 23, 2017 | 07:21 PM
#15
Launching!
Joined: Oct 2013
Posts: 224
Likes: 3
From: Alabama
Heres my take on swapping a nnbs intake into a older return style truck. Granted not the cheapest route to take so most won't do it like this...
Used a set of the Holley rails, Magnafuel boost referenced regulator and -6 lines. This truck will be turbo but won't see but maybe 750 so -6 works fine for my setup. can always go bigger being the rails are -8. I ran my fuel lines to where they just plug right into the factory feed and return lines. Today the correct length spacers should come in and the last few pieces to the intake tomorrow so will hopefully have it installed soon.
Used a set of the Holley rails, Magnafuel boost referenced regulator and -6 lines. This truck will be turbo but won't see but maybe 750 so -6 works fine for my setup. can always go bigger being the rails are -8. I ran my fuel lines to where they just plug right into the factory feed and return lines. Today the correct length spacers should come in and the last few pieces to the intake tomorrow so will hopefully have it installed soon.
What's the part number on rails and spacers?
Dec 23, 2017 | 10:13 PM
#16
551371 Is the part number Summit Racing has for the spacers but that’s for factory length truck injectors, 551348 would be better for the shorter car injectors. The Holley rails part number is 534-209
Dec 24, 2017 | 06:44 PM
#17
I have a set of these in the shop. Are the 8.1 injectors the same height as the 5.3 injectors?
Dec 31, 2017 | 01:55 PM
#19
Staging Lane
Joined: Jan 2017
Posts: 91
Likes: 0
I hate to hyjack your thread, but this made me REALLY want to know something.
EDIT: QUESTION ANSWERED IN "NEW MEMBERS"
so new question
Can somebody identify these intakes for me and is one better than the others?
Looks like the second from the left is best to me!
EDIT: QUESTION ANSWERED IN "NEW MEMBERS"
so new question
Can somebody identify these intakes for me and is one better than the others?
Looks like the second from the left is best to me!
Last edited by ACAMS; Dec 31, 2017 at 04:25 PM.