LSX swap...questions

1SMKN99 · 12-21-2012, 08:59 AM

so i am starting to entertain the idea of swapping an ls into my 99 gt since my mota is fawked. and i know there are alot of guys on here that have done the swaps in fox's and what not and im just wondering what all i am going to need? will i need to have a custom harness made to use my factory gauges? what transmission should i use?

outlawts · 12-21-2012, 09:20 AM

Want fit

BAD BOB · 12-21-2012, 09:22 AM

you can buy a standalone harness for like 500 and that will run the motor and trans (if needed). the only way to use your factory gauges for like oil pressure and water temp is to make you factory sensors fit in the LS motor. the easiest way to do the swap is to get a kmember or swap mounts for the swap into you car. and you will need a set of headers for the swap too.

1SMKN99 · 12-21-2012, 09:28 AM

Quote:

Originally Posted by BAD BOB

you can buy a standalone harness for like 500 and that will run the motor and trans (if needed). the only way to use your factory gauges for like oil pressure and water temp is to make you factory sensors fit in the LS motor. the easiest way to do the swap is to get a kmember or swap mounts for the swap into you car. and you will need a set of headers for the swap too.

i guess i could buy aftermarket gauges for that stuff, but as far as my speedo and tach? will it just be something i have to mock up?

BAD BOB · 12-21-2012, 09:36 AM

im sure your factory tach wont work off the GM tach signal, and the speedo as well

LXtasy · 12-21-2012, 10:18 AM

I believe dad has a tach signal inverter piece that he is not using that you can exchange some money for. I say go for it. I have entertained the idea of a mustang in your bodystyle and doing the swap.

1SMKN99 · 12-21-2012, 10:20 AM

i figure either ls with ported heads and a cam or build the 2v back and turbo it.

LXtasy · 12-21-2012, 10:21 AM

Ls, cam, and turbo. DONE!

ShawnBoyMoody · 12-21-2012, 10:25 AM

I believe the LS will bolt to the 2 valve K-member with a little egging of the bolt holes....

1SMKN99 · 12-21-2012, 10:28 AM

and as far as the trans goes?

ShawnBoyMoody · 12-21-2012, 10:37 AM

Not sure on a newer car except that I know AJE makes everything you need to do the swap. Im rear is probably gonna have to be custom made or come from AJE.

ForceFed4g63 · 12-21-2012, 10:41 AM

You need to get that 5.3 on CL.

jmd · 12-21-2012, 10:45 AM

what happened to the forged shortblock you had waiting to go in?

1SMKN99 · 12-21-2012, 10:45 AM

i found a ls1 with trans in bluffton for $1000

1SMKN99 · 12-21-2012, 10:47 AM

Quote:

Originally Posted by jmd

what happened to the forged shortblock you had waiting to go in?

i still have it, but for the price i could part out that, my cams, get the heads fixed and sell, and my intake and shit i could pay for a cammed, ported ls swap and make moar powa

however...my father bein a ford tech for 20 years...may disown me for putting a gm motor in a mustang lol

DolSVT00 · 12-21-2012, 10:50 AM

Find a 4v Navi motor in the junkyard....... Everything will bolt up

1SMKN99 · 12-21-2012, 11:03 AM

Quote:

Originally Posted by DolSVT00

Find a 4v Navi motor in the junkyard....... Everything will bolt up

thats what i was thinkin. lkq has one i saw that had low miles last week when i was there.

idk im gonna check out the heads a lil more tonight and see how bad they really are, last night i was tired and immediately passed out after i pulled my heads off lol

blubyu87gt · 12-21-2012, 11:26 AM

Quote:

Originally Posted by ShawnBoyMoody

I believe the LS will bolt to the 2 valve K-member with a little egging of the bolt holes....

A guy down here that has a pair of new edge GTs with LSX motors. One of them is running the stock k_member in it. I will try to get more info from him next time I see the guy.

I vote you keep it Ford though man.

1SMKN99 · 12-21-2012, 11:36 AM

Quote:

Originally Posted by blubyu87gt

A guy down here that has a pair of new edge GTs with LSX motors. One of them is running the stock k_member in it. I will try to get more info from him next time I see the guy.

I vote you keep it Ford though man.

i did find a complete swap with 03 cobra heads that included a new lfp intercooler, lower intake, harness and all for $1800

Harry · 12-21-2012, 11:39 AM

Quote:

Originally Posted by 1SMKN99

so i am starting to entertain the idea of swapping an ls into my 99 gt since my mota is fawked. and i know there are alot of guys on here that have done the swaps in fox's and what not and im just wondering what all i am going to need? will i need to have a custom harness made to use my factory gauges? what transmission should i use?

No, not another one.

12-21-2012, 08:59 AM	#1
1SMKN99 Senior Member Join Date: May 2012 Posts: 1,239	LSX swap...questions so i am starting to entertain the idea of swapping an ls into my 99 gt since my mota is fawked. and i know there are alot of guys on here that have done the swaps in fox's and what not and im just wondering what all i am going to need? will i need to have a custom harness made to use my factory gauges? what transmission should i use? __________________ LSX Mustang in process.

12-21-2012, 09:22 AM	#3
BAD BOB Senior Member Join Date: Mar 2008 Location: SUMMERVILLE Posts: 3,681	you can buy a standalone harness for like 500 and that will run the motor and trans (if needed). the only way to use your factory gauges for like oil pressure and water temp is to make you factory sensors fit in the LS motor. the easiest way to do the swap is to get a kmember or swap mounts for the swap into you car. and you will need a set of headers for the swap too. __________________ IM BAD BOB

12-21-2012, 09:36 AM	#5
BAD BOB Senior Member Join Date: Mar 2008 Location: SUMMERVILLE Posts: 3,681	im sure your factory tach wont work off the GM tach signal, and the speedo as well __________________ IM BAD BOB

12-21-2012, 10:18 AM	#6
LXtasy Senior Member Join Date: Dec 2006 Location: Summerville, SC Posts: 9,564	I believe dad has a tach signal inverter piece that he is not using that you can exchange some money for. I say go for it. I have entertained the idea of a mustang in your bodystyle and doing the swap. __________________

12-21-2012, 10:20 AM	#7
1SMKN99 Senior Member Join Date: May 2012 Posts: 1,239	i figure either ls with ported heads and a cam or build the 2v back and turbo it. __________________ LSX Mustang in process.

12-21-2012, 09:20 AM	#2
outlawts Senior Member Join Date: Mar 2010 Posts: 402	Want fit

12-21-2012, 10:21 AM	#8
LXtasy Senior Member Join Date: Dec 2006 Location: Summerville, SC Posts: 9,564	Ls, cam, and turbo. DONE! __________________

12-21-2012, 10:25 AM	#9
ShawnBoyMoody Senior Member Join Date: Aug 2009 Location: In the lab.... Posts: 8,159	I believe the LS will bolt to the 2 valve K-member with a little egging of the bolt holes.... __________________ The Krusty Koupe "Luck favors the oblivious, and boy am I lucky!"

12-21-2012, 10:28 AM	#10
1SMKN99 Senior Member Join Date: May 2012 Posts: 1,239	and as far as the trans goes? __________________ LSX Mustang in process.

12-21-2012, 10:37 AM	#11
ShawnBoyMoody Senior Member Join Date: Aug 2009 Location: In the lab.... Posts: 8,159	Not sure on a newer car except that I know AJE makes everything you need to do the swap. Im rear is probably gonna have to be custom made or come from AJE. __________________ The Krusty Koupe "Luck favors the oblivious, and boy am I lucky!"

12-21-2012, 10:41 AM	#12
ForceFed4g63 Senior Member Join Date: Oct 2009 Location: Aiken Posts: 7,002	You need to get that 5.3 on CL. __________________ 2000 WS6 2005 CTS-V 2004 Titan QC 4x4

12-21-2012, 10:45 AM	#13
jmd Senior Member Join Date: May 2008 Posts: 3,177	what happened to the forged shortblock you had waiting to go in? __________________ Cadillac man

12-21-2012, 10:50 AM	#16
DolSVT00 Moderator Join Date: Jan 2007 Location: Goose Creek Posts: 3,913	Find a 4v Navi motor in the junkyard....... Everything will bolt up __________________