427 swapping base model ls3!!








Any type of headers can be used although you do give up a little power if they're only from an LS2 or LS3. I ran 9s the first time I did it with LS2 headers still on the car.
You can also switch it over to a wet sump as well without changing the crank (the LS7 has a longer snout) in which case you'd need the oil pan from the LS3 and a few other parts.
Beyond that you'd also need to change the settings in the tune to just make it think it's a larger displacement LS3 but that's pretty simple to do.
If it's going into an automatic you'd need to keep the flywheel from the LS3 and switch that over.
I do all the work by myself at home in my garage on jackstands.
That kinda hits the highlights but feel free to ask as many other questions as you need to.




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Second, how long do you plan to keep this car? You most likely won’t make any money back when you go to resell it. If a Z06 is what you want, I’d hold out for the Z06 instead of having to rebuild a lesser vehicle.





