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Rob95CS

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I have the chance to get a screaming deal on the engine, trans, and computer from a 1997 Lumina with a 3400 (not DOHC). My question is, will it fit in the engine bay of my 95 Cutlass, and how tough of a swap is it to do?

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Lumina LTZ ... a '97 I believe. They had the 3400s for a year or two. Not long, though. So from what I understand from searching around is that the 3400 is a 100% direct replacement for the 3100, it will use the same trans and computer, and all that needs to be done is to use the sensors from the 3100?

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Lumina LTZ ... a '97 I believe. They had the 3400s for a year or two. Not long, though. So from what I understand from searching around is that the 3400 is a 100% direct replacement for the 3100, it will use the same trans and computer, and all that needs to be done is to use the sensors from the 3100?
The 97 LTZ's never had the 3400 available, they had the LQ1 (3.4 Twin Dual Cam.) In 98, the optional engine was the L36 (3800 Series II n/a) The base motor in the LTZ's was the 3100. There was a debate about this very subject a few months ago. But like it was mentioned, no Lumina CAR ever had a 3400 available (it was available in the 96 Lumina MINIVAN, though...)

 

This is an early 3100:

58_1.JPG

 

If the motor you want to swap in looks like this... :

14.jpg

...the swap will be a direct bolt-in and you'll be able to use the stock PCM and trans.

 

If the motor you speak of looks like this... :

2d_1.JPG

... it won't be that easy to swap in...

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okay i am wonderin how hard would it be to put that newer 3400 non dohc in a 89 cutty that has a 2.8 , automatic

 

 

and also if there is a website out there for this please put a link up

 

 

thanks

Jeremy

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Alrighty how hard would it be to swap a 3800 supercharged from a grand prix into a 93 cutty with a 3.1? or would it be easier to do a top end swap

 

 

Have fun doing that swap. http://www.l67swap.com should answer your questions on that.

 

 

Yes, a 3100/3400 top end swap, hell, whole engine swap would be much easier than a L67 swap.

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Swapping any GM 60v6 with another is easy, the 3400 swap can be done in a day and no it will not run lean on a comp for a 3100 however to truly take advatange of the engine one should get a PCM tuned for the engine/trans combo.

 

DHP can hook you up with the right PCM

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