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

10 Answers



1 of 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 of 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!

1 of 1 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 of 1 people found this helpful.

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

2 of 2 people found this helpful.

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

1 of 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?

Your Answer

Add photo

Related Questions

Monte Carlo

Looking for a Used Monte Carlo in your area?

CarGurus has 1,460 nationwide Monte Carlo listings starting at $1,650.


Search Chevrolet Monte Carlo Questions

Chevrolet Monte Carlo Experts

#1 Tom Demyan
Tom Demyan
Reputation 520
#2 Js08016
Reputation 460
#3 John Saffrahn
John Saffrahn
Reputation 410
View All

Related Models For Sale

Used Chevrolet Impala
613 Great Deals out of 35,412 listings starting at $899
Used Chevrolet Camaro
245 Great Deals out of 31,897 listings starting at $1,000
Used Ford Mustang
623 Great Deals out of 46,672 listings starting at $750
Used Chevrolet Corvette
165 Great Deals out of 21,302 listings starting at $2,500
Used Pontiac Grand Prix
40 Great Deals out of 2,910 listings starting at $1,995
Used Chevrolet Malibu
1,053 Great Deals out of 78,585 listings starting at $1,500
Used Chevrolet Silverado 1500
1,827 Great Deals out of 182,478 listings starting at $1,595
Used Chevrolet Tahoe
586 Great Deals out of 32,534 listings starting at $1,500
Used Buick Regal
145 Great Deals out of 11,112 listings starting at $2,499

Used Cars For Sale

2007 Chevrolet Monte Carlo SS For Sale
4 Great Deals out of 38 listings starting at $4,900
2006 Chevrolet Monte Carlo SS For Sale
61 listings starting at $5,450
2005 Chevrolet Monte Carlo SS For Sale
35 listings starting at $2,645

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.