Jeff 98XJ WI
NAXJA Forum User
- Location
- Butternut, WI
This installment will deal with the LS1 intake manifold. First, lets look at injectors. I would like to use the Truck injectors because I have them and they were designed to work with the computer/engine. Here's a pic of one:
Here it is (from the bottom) installed in the truck manifold.
Here's a pic showing the thick plastic intake manifold used with the truck intake set off to the side.
The truck intake ports for the injectors are basically a cylindrical hole.
The car LS1 intake ports for the injectors have a stepped portion near the bottom.
The truck injectors won't fit all the way down into the car LS1 injector port holes. However, the truck injectors have a small plastic cap type thing on their ends that can be removed as shown on a different web site. So, I pried off one of the caps and tried the injector in the LS1 intake. It fit well. Here's a pic showing this injector installed in the LS1 intake on the left and an unmodified truck injector sitting in the port on the right.
Here's the same thing as viewed from the bottom.
Here's the injector with the cap removed.
So, I removed all the caps and installed the injectors in the LS1 intake with the truck 0-rings and then slipped the fuel rails over the injectors and installed the crossover tube.
The crossover tube may still be too high, but I'll have to work on that later. Jeff

Here it is (from the bottom) installed in the truck manifold.

Here's a pic showing the thick plastic intake manifold used with the truck intake set off to the side.

The truck intake ports for the injectors are basically a cylindrical hole.

The car LS1 intake ports for the injectors have a stepped portion near the bottom.


The truck injectors won't fit all the way down into the car LS1 injector port holes. However, the truck injectors have a small plastic cap type thing on their ends that can be removed as shown on a different web site. So, I pried off one of the caps and tried the injector in the LS1 intake. It fit well. Here's a pic showing this injector installed in the LS1 intake on the left and an unmodified truck injector sitting in the port on the right.

Here's the same thing as viewed from the bottom.

Here's the injector with the cap removed.

So, I removed all the caps and installed the injectors in the LS1 intake with the truck 0-rings and then slipped the fuel rails over the injectors and installed the crossover tube.




The crossover tube may still be too high, but I'll have to work on that later. Jeff
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