Need to know

[jdoutlaw5150]

Can I replace a 3400 SFI with a 3.4l dohc in my 03 Alero or with a 3800 supercharged what all would I have to move or change thank u for time and consideration in this matter

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[Schurkey]

How well can you weld and fabricate?

Overall,not my first choice for engine swaps.

[jdoutlaw5150]

No welder but am ok at it

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[jdoutlaw5150]

What would you recommend

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[jdoutlaw5150]

How well can you weld and fabricate?

Overall,not my first choice for engine swaps.

I'm OK at it but don't have a welder on hand I already pulled 3800 supercharger on it and headers but what would you recommend

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[jdoutlaw5150]

How well can you weld and fabricate?

Overall,not my first choice for engine swaps.

Should I use the 3.4 liter DOHC I've built a lot of classic muscle but this is my first transverse motor don't know if I should go with a supercharger or turbo

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[thetruckster]

I agree about the 3.4 DOHC. I had one and wasn't impressed.

It's obviously a taller engine and hugely expensive! Every OHC engine I've owned are expensive!

Personally, I'd leave the 3400 in the Alero and just build it!

Ben Lujin

[jdoutlaw5150]

So half way there motor is in mounts made sensors wired adjusting header now to swap pcm and bum how can I get a pinnout for 03 alero bcm

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[Dave96z34]

I don't know if your engine cradle has all the proper mounts for a LQ1. Post a pic of one and all let you know if it will bolt up or not. But I'm betting the rear mount is missing in a 03.

[jdoutlaw5150]

I put in a l67 series 2 I've made new mounts have it in but need wire diagrams for the ecu plugs on the stock 03 alero 3400 sfi so I can wire it to a 97 or 98 grand prix 3800 sc ecu

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