I have an 3.8 in my grand prix can I swap it with a 5.3

Asked by Jun 12, 2017 at 04:01 AM about the 2004 Pontiac Grand Prix GT1

Question type: Car Customization

I have an 04 grand prix gt1  with an 3.8 in it and I
am trying to swap it with an 5.3 enging and trann
will it fit with no problems

3 Answers


Nope, you will be in for quite a job trying to do something like this. Almost everything will have the be custom manufactured. In my opinion don't even start.

1 of 1 people found this helpful.

In 2005 Pontiac Released the GXP With the 5.3 LS4 V8. But it was heavily modified. The crankshaft in these engines were actually shorter than the RWD/AWD. 5.3's You can make a GXP clone of your GT1 But you will need everything from a GXP Or a GXP enfine management system, engine trans and cradle. Plus aftermarket brakes, suspension, etc...

1 of 1 people found this helpful.

Save yourself!! Sell your GP and buy a factory performance car. Modify it if you want still more. Building your own is not a practical option for you.

Your Answer

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 58 nationwide Grand Prix listings starting at $8,950.

Postal Code:

Pontiac Grand Prix Experts

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

Related Models For Sale

Used Chevrolet Impala
151 Great Deals out of 1,105 listings starting at $2,488
Used Chevrolet Monte Carlo
15 listings starting at $4,995
Used Pontiac G6
122 listings starting at $2,500
Used Chevrolet Malibu
72 Great Deals out of 1,820 listings starting at $2,900
Used Pontiac Grand Am
27 listings
Used Pontiac GTO
5 listings starting at $13,900
Used Ford Mustang
1,037 listings starting at $3,900
Used Nissan Maxima
16 Great Deals out of 405 listings starting at $3,795
Used Chrysler 300
79 Great Deals out of 836 listings starting at $3,295
Used Honda Accord
59 Great Deals out of 1,237 listings starting at $1,350

Used Cars For Sale

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.