Engine Swap. GTP into GT , Help im a noob. help Please:)

**guimond47** · 05-15-2011

this is what i have to mess with . i have a 2000 gt and i wanna put a 97 gtp supercharge on it (top swap). Questions!!! people tell me to do a top swap and slap a gtp pcm in it with an 97 gtp front harness because the 2000 GT harness isent the same. but wat about the tranny gearing ratio. isent the gt pcm tunned for a gt tranny and a gtp pcm tunned for a gtp tranny. people tell me that the gtp pcm will work with a GT tranny.... is this true? i was gonna throw the whole 1997 GTP motor and tranny in the 2000 gt with the gtp wireing and pcm, thats alot of work. but then i heard that the fuel pump needs to be a 2 stage for a superchager (gtp) if i swap the whole engine, which means i have to run a whole nother gas line from back to front... and with a top swap i dont need to do that sapossably.... im totally confused on what to do now...

All i know is i have a complete 2000 Grand prix GT that runs mint ( my car)
and that i have a complete 1997 Grand prix GTP car ( rotten Frame) for parts. soo i have all wires fuel pumps engine, tranny, and all . i need to know exacly the best situation to do.

I have NO WAY to tune my PCM where im located... soo thats out of the question. anyone have pointers. no one wants to help my situation and i posted quite a few topics. let me know guys... thanks

**guimond47** · 05-16-2011

this is what i have to mess with . i have a 2000 gt and i wanna put a 97 gtp supercharge on it (top swap). Questions!!! people tell me to do a top swap and slap a gtp pcm in it with an 97 gtp front harness because the 2000 GT harness isent the same. but wat about the tranny gearing ratio. isent the gt pcm tunned for a gt tranny and a gtp pcm tunned for a gtp tranny. people tell me that the gtp pcm will work with a GT tranny.... is this true? i was gonna throw the whole 1997 GTP motor and tranny in the 2000 gt with the gtp wireing and pcm, thats alot of work. but then i heard that the fuel pump needs to be a 2 stage for a superchager (gtp) if i swap the whole engine, which means i have to run a whole nother gas line from back to front... and with a top swap i dont need to do that sapossably.... im totally confused on what to do now...

All i know is i have a complete 2000 Grand prix GT that runs mint ( my car)
and that i have a complete 1997 [COLOR=blue !important][COLOR=blue !important]Grand [COLOR=blue !important]prix [/COLOR][COLOR=blue !important]GTP[/COLOR][/COLOR][/COLOR] car ( rotten Frame) for parts. soo i have all wires fuel pumps engine, tranny, and all . i need to know exacly the best situation to do.

I have NO WAY to tune my PCM where im located... soo thats out of the question. anyone have pointers. no one wants to help my situation and i posted quite a few topics. let me know guys... thanks

i was thinking a complete engine swap but then i heard about the dual fuel line and the multi-stage pump.....

If i do a top swap do i need a mutistage fuel pump as well as running a new gas line?

help me out wat would u do to get a 97 gtp supercharger in a 2000 gt. i have no way to tune a pcm btw...

**BillBoost37** · 05-16-2011

Being is Sudland..you aren't that far from a couple of tuners.

As for the parts fitting, they would. And you could easily add the wires to your 2000 harness, there is very little when you look at it.

**Dtrick22** · 05-16-2011

You can't topswap without a tune, so just forget that. It's not even an option for you.
You can't swap in the GTP motor without a tune, you can't use the GTP's PCM because it is set for the 2.93's, and you can't use the GT's PCM because it is set for the 3.29's, so forget that as well. As far as your fuel pump questions go, the pump itself will work. It's the fuel rail and injectors that are different. The pump will work until a point where you are making crazy power, which I doubt you will reach so you should be fine with the GT pump for now.
What you probably could do, is take the motor AND transmission out of the GTP and put it in. You will also have to take the fuel rail&injectors like I mentioned and swap those out as well...there will be some more little things that you need to do but I can't think of it off the top of my head....And I doubt you're going to get many responses by making several threads about the same thing, just give it time