05 grand prix engine into 04?

Asked by Apr 05, 2013 at 02:10 PM about the 2004 Pontiac Grand Prix

Question type: Maintenance & Repair

have an 04 with blown motor, have an 05 wrecked grand prix was going to swap motor into 04 but salvage yards says they don't interchange, they look the same looking at them from the top but scared to do the work if something is different I cant see

4 Answers

100,705

The 2004 and the 2005 are both seventh generation (2004–2008). The engine should drop in. Check with other owners on the forums to see if there are any details that might be a problem. -- http://www.grandprixforums.net/ --- http://www.clubgp.com/newforum/default.asp? cookieCheck=840780044 --

2 of 2 people found this helpful.
70,295

You may need to have your computer reprogrammed (flashed) using the doner car's vehicle identification number. HTH. -Jim

1 of 1 people found this helpful.
215

it depends on if its gt, gtp, gxp, all have different sized motors and gtp and gxp have superchargers. same size motor AKA 3.8L will swap out. u will have to reprogram the censors as well. but you can do that pretty easy

1 of 1 people found this helpful.
365

If its an SE, GT1, or GT2 the engine will be a standard 3.8 and should drop in no issues. Theres a small chance youd have to program the pcm but just use the one from the donor car. The GTP is obviously the supercharged one, it will take a few here and there parts but nothing all too extensive. Then you have the GXP which is NOT supercharged. its a 5.3L V-8 that i wouldnt waste any time on.

1 of 1 people found this helpful.

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