Help figuring out my intake swap from a truck 4.8
03-23-2018, 01:17 PM
#1
Help figuring out my intake swap from a truck 4.8 I'm trying to figure out what I need to get to do the intake swap on the 4.8 LR4 I'm putting in an 84 Camaro, since the truck intake won't clear. I have a complete engine with intake/injectors/rails/tb/harness and would like the easiest/cheapest setup to get it running.
If I get an LS1/6 intake, I can reuse my throttle body, and can use my injectors with a spacers to fit them properly, will truck fuel rails work as well or will I need those from an LS1? Or would I be best just getting a complete intake/rails/injectors and getting adapters for the plugs?
If I were to get an LS2 intake, I need throttle body and rails, but my truck injectors will work?
Is that correct? Is there an option I'm missing if I have all the truck parts and just need a shorter intake? I know I'll need to deal with water pump and idler pulley, that's not really my concern just yet. Just wanting to figure out what intake parts I need.
If I get an LS1/6 intake, I can reuse my throttle body, and can use my injectors with a spacers to fit them properly, will truck fuel rails work as well or will I need those from an LS1? Or would I be best just getting a complete intake/rails/injectors and getting adapters for the plugs?
If I were to get an LS2 intake, I need throttle body and rails, but my truck injectors will work?
Is that correct? Is there an option I'm missing if I have all the truck parts and just need a shorter intake? I know I'll need to deal with water pump and idler pulley, that's not really my concern just yet. Just wanting to figure out what intake parts I need.
03-23-2018, 03:24 PM
#2
you will also need a car style water pump.
i did the ls6 intake i had on the shelf from one of my gtos but i didnt have a fuel so a friend gave me a chinese setup he had. im using stock LS1 injectors from my GTO with adapters from amazon.
truck fuel rail would stick up several inches above the manifold.
i did the ls6 intake i had on the shelf from one of my gtos but i didnt have a fuel so a friend gave me a chinese setup he had. im using stock LS1 injectors from my GTO with adapters from amazon.
truck fuel rail would stick up several inches above the manifold.
03-24-2018, 07:29 AM
#3
If the truck intake don’t fit, I doubt the rails would fit either as they are just about as tall as the truck intake is.
What harness are you running? Then that helps what’s the cheaper way to go with your injectors wiring.
I’d just get a complete pull out ls1/6 intake if possible. Be patient on finding one
What harness are you running? Then that helps what’s the cheaper way to go with your injectors wiring.
I’d just get a complete pull out ls1/6 intake if possible. Be patient on finding one
03-24-2018, 07:45 AM
#4
If the truck intake don’t fit, I doubt the rails would fit either as they are just about as tall as the truck intake is.
What harness are you running? Then that helps what’s the cheaper way to go with your injectors wiring.
I’d just get a complete pull out ls1/6 intake if possible. Be patient on finding one
What harness are you running? Then that helps what’s the cheaper way to go with your injectors wiring.
I’d just get a complete pull out ls1/6 intake if possible. Be patient on finding one
03-24-2018, 08:32 AM
#5
Let’s say you find a complete car swap intake you just need to re wire the injectors or buy the harness adapters for them, sometimes this doesn’t loook as nice but it depends on the wiring adapter setup.
Or like you said, buy the adapters to make truck injectors work in a car intake setup and no wiring needs to be done.
I don’t know which way is cheaper route to go.
I sold a bunch of ls1 intakes cheap one time at $75, intake only.
Stock fuel Rails go for around $75
You’ll need car intake bolts also and gaskets as they are different.
Your truck tb will work on the car intakes.
Or like you said, buy the adapters to make truck injectors work in a car intake setup and no wiring needs to be done.
I don’t know which way is cheaper route to go.
I sold a bunch of ls1 intakes cheap one time at $75, intake only.
Stock fuel Rails go for around $75
You’ll need car intake bolts also and gaskets as they are different.
Your truck tb will work on the car intakes.
03-24-2018, 12:35 PM
#6
Have you checked on thirgen.org? There were several people who made the truck intake fit. I think that even a few people didn't even shave the truck intake. Otherwise buy a complete car intake and either adapters for plugs for injectors or put the car plugs on your harness.
03-24-2018, 12:52 PM
#7
Have you checked on thirgen.org? There were several people who made the truck intake fit. I think that even a few people didn't even shave the truck intake. Otherwise buy a complete car intake and either adapters for plugs for injectors or put the car plugs on your harness.
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03-24-2018, 01:22 PM
#8
I used an LS1 intake in my 68, you can get the truck water pump to work you just have to LIGHTLY tap the spout over with a rubber hammer. I used billet rails from Holley and some billet spacers for the truck injectors I found on eBay and I think they were $45.
03-24-2018, 01:37 PM
#9
is there any benefit to the fuel rails or is it just cosmetic?
03-24-2018, 01:44 PM
#10
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You'll probably have to relocate the alternator as well. I swapped to a complete corvette accessories and intake for my BMW swap.
I have an LS6 intake for sale, PM if you're interested.
I have an LS6 intake for sale, PM if you're interested.
03-24-2018, 07:07 PM
#12
Pm sent
04-04-2018, 01:49 PM
#15
TECH Regular
I have an LS2 intake that came with rails and injectors. I'm using decapped truck injectors with the ls2 rails and I had to buy adapters to space them up and they were a super PIA to get in and all lined up. I also bought new orings because from what I read the ls2 intake was a different diameter (14mm as opposed to 14.5 or something like that). I used the stock truck throttle body with an adapter 4 bolt to 3 bolt. Works great. Also used the truck water pump with a slight ding in the water pipe to clear where the throttle actuates from. Oh and that's after you cut the cruise part off. Also used a truck power steering/alternator bracket cut above the power steering unit to use just the alternator. Elongated the holes and rolled it sideways. I forget the belt length but I used the stock truck alternator and tensioners. Sorry for the long winded response but it was a budget build and it all worked great if your looking to save money.
