I want to swap out the engine in my 2003 monte carlo ss to a LS7 V8. How much trouble will it be?


Asked by Apr 09, 2009 at 09:16 PM about the 2003 Chevrolet Monte Carlo SS

Question type: Car Customization

11 Answers



1 people found this helpful.

If you have the motor keep it for something else. it would be pretty silly to hook that much power to fwd. If you dont have the motor... save the money and put it towards the engine you have. those things are built like a shit house and you can get plenty of power without having to swap the engine.

2 people found this helpful.

Not only that...the engine is about 8 or more grand and the tranny and the this an that...go by rwd monte...easier to work with...or by soemthing like mine...LS4 BABY!

2 people found this helpful.

You can always buy a 04 or newer l32 top swap. If you have an L36 you'll be good since the L36 compression is the highest of all the 3800L. You might want to think about some headers, a downpipe with u-bend delete, a 2.5 cat back system, a 4" CAI, and a heavy duty tranny with a good shift kit. You can try Ed Morad, an Ohio based salvage yard which sells the kits. That's where I got mine. For a 05 L32 top swap kit, including the fuel rails and injectors/injector wiring, and the gasket needed I paid around $1200.


why waste the money on v6 GET MONTE WITH V8....HAS FROM FREAKIN BALLS!


not a good idea with FWD. you will need to redo that entire front end if you do the swap. do you have any idea how much the tranny, engine, and front end is going to cost?!?! not worth it


I'd get a v-8 MC but their performance isn't the greatest and, for the same money, I could get a mustang with a better performance package. Besides, the gen 7 MC's aren't as nice looking as the gen 6.

1 people found this helpful.

Can you put 2006-ss 5.3L, and a 2003 monte carlo ss 3.8L

3 people found this helpful.

so, back to the question,, LS into a 2003, no one knows how?

1 people found this helpful.

I want to change out a 3.4 L to the 3.8l with the super charger on my 2003 gen 6 Monte Carlo. Do I need to change the trans and wiring harness to?

2 people found this helpful.

What can i do to beef up my 2015 impala..not the newer style but the one cops drive.i want to go ls4 is it possible??

Your Answer:

Monte Carlo

Looking for a Used Monte Carlo in your area?

CarGurus has 940 nationwide Monte Carlo listings starting at $2,950.


Chevrolet Monte Carlo Experts

  • #1
  • #2
    Tom Demyan
  • #3
    John Saffrahn
View All

Related Models For Sale

Used Chevrolet Impala
375 Great Deals out of 25,638 listings starting at $950
Used Chevrolet Camaro
237 Great Deals out of 27,289 listings starting at $2,077
Used Ford Mustang
266 Great Deals out of 37,717 listings starting at $1,350
Used Pontiac Grand Prix
14 Great Deals out of 1,756 listings starting at $800
Used Chevrolet Corvette
96 Great Deals out of 15,045 listings starting at $3,620
Used Chevrolet Malibu
489 Great Deals out of 51,427 listings starting at $1,995
Used Buick Regal
85 Great Deals out of 3,942 listings starting at $5,300
Used Chevrolet Silverado 1500
1,764 Great Deals out of 153,598 listings starting at $1,000
Used Chevrolet Tahoe
522 Great Deals out of 37,993 listings starting at $1,243
Used Pontiac Firebird
6 Great Deals out of 682 listings starting at $4,700

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.