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

G

guimond47

New member
hey im gonna be buying a 1997 GTP tomarrow for 300$ and i wanted to throw the engine into my 2000 GT. . the tranny on the gt is mint. i wanna keep the gt tranny because the one on the GTP is slipping. i need to know if the 97 and 2000 wireing harnesses are the same and if i have to put the gtp computer into it. im technacly putting everything from the GTP into the GT. including the leather seat and all. anyone have a good simple write up on what to do exacly. because i need everything to work properly and wanted to know if its better to just to a top end swap but i still need to know what to do with the electrical and all. anyone kind enough to teach me would be nice. gtp engine has 275 000km and gt engine has like 140 000 km. whats my best options.

Thanks steph
 


either way you're going to need a custom PCM here.

top swap would make sure all of the gaskets were fresh and all of the parts you're putting on are in good shape.

Would also give you some opportunity to install an aftermarket cam and at the very least do a bowl polish and a good valve job.
 
Top swap gtp on gt . What about the pcm!? Wat do i doo

Hey guys gonna be doing a top swap soon on my gp gt 2000 with a gp gtp 1997 parts and wanted to know wat about the pcm? Im gonna be putting the digital dash gauge from the gtp in my gt included heated seats and all. Can i just use the pcm from the gtp and put it in my gt without getting it tunned for top swap . Im new at the top swap an just started to read up about it. Ive read the whole 10 pages of the top swap topic in the forum. I just need additional info. Thanks and wat about the wireing harness too. Does that gtp harness need to go into the gt in order to have the digital dash gauge? Help a guy out here thanks guys:)
 
Re: Top swap gtp on gt . What about the pcm!? Wat do i doo

You won't be able to use the GTP PCM....your gear ratio is different in the transmission and that one will be set to the GTP ones and it won't drive right....You will need a total custom tune because of the additional compression and such. I wouldn't recommend trying to tackle the topswap tune yourself if you have no tuning experience. There is probably someone in your area who can help you out with that.
 


Re: Top swap gtp on gt . What about the pcm!? Wat do i doo

Then would be better putting a whole gtp engine and tranny in my gt . Because i have a whole gtp parts car sooo i have all the parts . Im just looking at my options and no theres no one in sudbury, ontario, canada that can tune my computer.. Any jdeas of wat i should do?. Its just the guy that i bought the gtp off of said the tranny was sliping abit but not a whole lot. Give me ideas
 
Complete engine, trans swap help gtp in gt

Im putting a complete engine and tranny from a 97 gtp into a 2000 gt. I wanted to know if i have to change anywireing harneses or if there the same. Is there a two peice to the harness. Ill be putting the gtp pcm in aswell. My only concern is the wireing harness and the two stage fuel pump . Do i need a gtp fuel pump or is the gt good enough for the supercharged engine. Let me know if theres anything else i need to change in order for everything to work well thanks
 
Re: Complete engine, trans swap help gtp in gt

i dont think the PCM will work.

97 PCM's had a different pinout than the newer ones.
 
Re: Complete engine, trans swap help gtp in gt

Which means ill need to change the wireing harnesse? Wat about the fuel pump
 


Re: Top swap gtp on gt . What about the pcm!? Wat do i doo

Why not just change the trans fluid and filter in the gtp and drive it?
 
Stupid noob question here but, are the pinouts on the GT and GTP computers the same or maybe close enough that I could just swap and/or add a few wires and connectors to my GT harness and make it work. Sure would make the swap a lot easier if I could just swap in a GTP engine and computer and go.
 


OP just do a top swap and find someone near where you live who can tune, it will be much simpler than trying to change out wiring harnesses and pcm's.
 
My simple question here is can the gt fuel pump work with the gtp pcm since i heard the gtp has a dual stage fuel pump and if i can just throw the gtp wirein harness into my gt. Wat is the harness anyways and where is the pcm located . The harness is only from the pcm to engine sensors right? Or is there more that i need to change out . I need to know exacly whats the main harness in this car
 
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