LS3 & LS7 Intake/Fuel Rails

[MillerBuilt]

Originally Posted by NvrDun71

Yes they are different

Thanks!

Originally Posted by gnx7

The port size is massively different. What heads do you have?
Make sure you get all the O-rings with the intake... those are pricey little suckers.

That makes sense. I don't have the engine yet, but will just be a simple LS3 crate engine. I have/use a plastic mock up block that I was thinking of picking up a intake for so that I could continue to build around without having the actual engine. Saw a LS7 for sale and figured I might pick it up,,,, even though just for mock-up, I think I will pass since it will be a harder sale when I am done with it for mock up and want to off it. Thank you for time. Jay