Swap 98 Prix engine w/o supercharger with one with


Asked by Dec 27, 2011 at 11:43 PM about the 1998 Pontiac Grand Prix 2 Dr GT Coupe

Question type: Car Customization

I have a 98 Prix with out a supercharger and would like to switch it with an engine
with one. Is this possible? If so what extras will i need to purchase to make it work?

10 Answers


for all the work & money to switch everything it might be cheaper to just buy a car equipt with a super charger ! you would have to beef up suspension ,change the ECU ,exhaust pipes, wiring harness & radiator & air box..............

2 out of 2 people think this is helpful.

i agree, just the cost of the computer would be prohibitive, would be much cheaper just buying one with the 3.8 supercharged and enjoy!!!!!

1 out of 1 people think this is helpful.

thank you. Might anyone have a 3800 w/o supercharger for sale? My engine on my grand prix blew so i got a new car and then 6 months later the head gasket blew. Now im thinking about selling my current car and using the money to replace the engine in the grand prix since i liked it so much.

1 out of 1 people think this is helpful.

there are countless places online i'm sure you can find one at a decent price . ebay, yahoo, car buyers market.com, to name a few,or you can just replace the engine with an original 3.8 that was is there,you can buy those engines rebuilt at a good price or even from a junk yard ,but i rather have new at least it has a warranty.

1 out of 1 people think this is helpful.

horsepower is 180 for normally aspirated engines and 205 for the supercharged version. that also requires premium fuel. so not that much bang for a lot of buck


Daniel you're wrong, a naturally aspirated 3.8 is 200 HP a s/c 3.8 is 240, I have a naturally aspirated 3.8 with a custom high flow exhaust and a cold air intake that makes 220 hp

2 out of 2 people think this is helpful.

The bottom end of engines are the same. Buy a wrecked gtp, then pull the motor. The only thing that may be an issue is there is a gauge that shows boost. I don't know if that would be a problem.

And by the way, suspension, exhaust is the same. Computer and maybe upper wiring harness is different. Lower wiring harness is the same.

If you think different, go on advance auto's website and type in 2001 gtp and 2001 gt..... all parts are same. I own a 98 gt, 2000gt, and 2001 gtp. 3 very thing is the same, except motor and transmission. Gearing is better in the gt than gtp too. So keep your gt trans, and add it to the gtp engine.

The difference is not what any of you say. There both basic ls blocks, 3800 series. Motors are exact same, what's different is the heads, intake, fuel injectors, Pcm, wiring harness, transmissions are different, 60 in the gt, 65 in gtp. One axel might be shorter or longer on the gtp I can't remember. And they say they make 200hp and 240hp but these aren't at the wheel power. Daniel would be correct, at the wheel it's more like 180 for the gt and 200 for the gtp. Started a swap my self.

Your Answer

Add photo

Related Questions

  • Supercharger kit 4 answers

    How much is a supercharger kit for a 08 grandprix?

    2008 Pontiac Grand Prix Base


    Car Customization

  • supercharged grand prix 7 answers

    i have a 1999 grand prix with a non supercharged 3.8 v6. i thought that gm made a supercharged 3.8 for that model. i was just wondering if you could find a factory supercharger for that engine package...

    1999 Pontiac Grand Prix


    Car Customization

  • Can i swap gto engine and transmission to a grand prix 2000 gtp supercharged body? 1 answer

    I blew my motor to my Pontiac grandprix gtp supercharged 2000 so don't know if I should rebuild the motor with not knowing any performance parts I would need for it!!??

    2000 Pontiac Grand Prix GTP Coupe


    Car Customization

  • supercharger 1 answer

    will a supercharger from a 3.8 work for a 3.1 v6.

    2003 Pontiac Grand Prix SE


    Car Customization

  • I have a 98 grand Prix 3800 supercharged what cars have the same transmission 2 answers

    I have a 2000 impala with the 3800 in it can I put the transmission from it and put it in my 98 Pontiac grand Prix with the supercharger

    1998 Pontiac Grand Prix 4 Dr GTP Supercharged Sedan


    Maintenance & Repair

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 3,715 nationwide Grand Prix listings starting at $1,100.


Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Reputation 3,980
#2 Tom Demyan
Tom Demyan
Reputation 2,660
#3 munron
Reputation 2,070
View All

Related Models For Sale

Used Pontiac Bonneville
5 Great Deals out of 655 listings starting at $1,599
Used Chevrolet Monte Carlo
15 Great Deals out of 1,662 listings starting at $2,000
Used Pontiac Grand Am
1,649 listings starting at $1,995
Used Chevrolet Malibu
1,006 Great Deals out of 85,672 listings starting at $1,995
Used Ford Mustang
362 Great Deals out of 44,486 listings starting at $1,000
Used Chevrolet Camaro
282 Great Deals out of 38,299 listings starting at $1,250
Used Nissan Maxima
347 Great Deals out of 25,223 listings starting at $1,400
Used Honda Accord
811 Great Deals out of 81,613 listings starting at $899
Used Nissan Altima
1,087 Great Deals out of 82,558 listings starting at $670
Used Jeep Grand Cherokee
845 Great Deals out of 68,679 listings starting at $864

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
13 Great Deals out of 462 listings starting at $1,200
2007 Pontiac Grand Prix For Sale
5 Great Deals out of 542 listings starting at $3,250
2006 Pontiac Grand Prix For Sale
8 Great Deals out of 605 listings starting at $1,999
2005 Pontiac Grand Prix For Sale
451 listings starting at $5,900