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

Asked by Guru9Y85Q 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

4 Answers

234,665

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.

2 people found this helpful.
2,775

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...

2 people found this helpful.
12,445

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.

1 people found this helpful.

Take the computer, wires and engine out of an SS impala or a gxp Pontiac grand prix and it should work just remember that the transmission cases that were manufactured for the 5.3 fwd would usually strip out because of the torque.be sure to get a reinforced transmission case if you're considering running this car hard

Your Answer:

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 19 nationwide Grand Prix listings and the tools to find you a great deal.

Postal Code:

Pontiac Grand Prix Experts

  • #1
    Js08016
    Reputation
    6,670
  • #2
    munron
    Reputation
    5,870
  • #3
    Dorian Hendricks
    Reputation
    4,100
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Impala
11 Great Deals out of 597 listings starting at $2,295
Used Pontiac Grand Am
14 listings
Used Pontiac GTO
4 listings
Used Pontiac G6
53 listings starting at $4,500
Used Chevrolet Malibu
25 Great Deals out of 1,343 listings starting at $1,794
Used Buick Regal
5 Great Deals out of 90 listings starting at $2,500
Used Ford Mustang
24 Great Deals out of 1,266 listings starting at $6,898
Used Buick LaCrosse
10 Great Deals out of 133 listings starting at $4,495

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. Content will be removed if CarGurus becomes aware that it violates our policies.