4.6L DOHC Engine Swap into a 90 GT

00'BlackSteed · 07-27-2001, 01:33 PM

I'm a fan of the modular engines and I wanted to know what would I need to put a 96+Cobra motor into my 90 GT other than the Engine,trans and ECU/wiring. Would I also have to change the motor mounts or would they match up? Also, how much would a Cobra motor and trans cost me? Any input on this matter or past experiences on motor swaps would be greatly appreciated.

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00'GT,(S281 clone),3 chamber flows,K&N filter,BBK underdrive pulleys & 3.73 gears. No time slip as of yet(est.13.7-13.9)

96GTfanatic · 07-27-2001, 02:35 PM

I am actually planning on doing a swap also. At first I was going to do the same, but i relized how much it would cost. Wiring alone would be about $2,000. But that could be different for you, thats what my mechanic would charge. However, to put a 5.0 souped up beyond belief would give you more hp, and cost a hell of a lot less than the 4.6. I also love the modular engines, but if you dont have 3k to have the engine installed, i would go with the 5.0. Also, I don't think the old tranny will mount up to the 4.6, but I could be wrong. I know it will mount up to a 94 Gt however. Good luck.

blue00gt · 07-27-2001, 06:47 PM

Not only do you need new motor mounts, you need to change to a newer style K-member and get a new driveshaft also. Probably have to change some things on the exhaust too.

96SNAKE · 07-28-2001, 08:56 AM

You woudn't need a new driveshaft. You just have to switch the yoke from the 5.0 shaft to yoke from a Cobra shaft to mate with the T-45. Or you could just buy a new aluminum drvshaft for a Cobra and be done with it..

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formerly 96cobra89lx306

(96Cobra/softtop-3.73,almdrvsht,fancontrl,steeda sbfrmes+shifter,eibachspgs,KYB's,FR-upper arms,Saleen copy-polished 18's,pulleys,Bassani X pipe(off-road),C&L 80mm,Amsoil etc..

93 Ford Probe Gt(slower but turns)

[This message has been edited by 96SNAKE (edited 07-28-2001).]

00'BlackSteed · 07-29-2001, 01:28 AM

I think I am going to get a new 5.0 engine. I saw one place selling rebuilt 5.0 engines for 500.00. Instead of the engine transplant I'll just get a supercharger. Thanks for the input.

------------------
00'GT,(S281 clone),3 chamber flows,K&N filter,BBK underdrive pulleys & 3.73 gears. No time slip as of yet(est.13.7-13.9)

faststang90 · 08-02-2001, 12:24 AM

i have a 90 coupe and i have been thinking of do the 4.6 change over i priced the 4.6 4 cam motors and they start at 4500, the computers r 150 i have a tko so there all i have to do is buy a bellhousing but i need the k member and new exhaust and after all this money i have a stock 4.6 cobra motor that is y im staying with my pushrod 5.0 till the price comes down on them

96SNAKE · 08-02-2001, 07:08 AM

it is expensive and could be a pain in the *** but when i think of my 4.6 engine being in my old 2900lb LX, it makes me wonder how much faster that car would have been. my boat convt must weigh 600lbs more than that car..

i would do it all with used parts..

------------------
formerly 96cobra89lx306

(96Cobra/softtop-3.73,almdrvsht,fancontrl,steeda sbfrmes+shifter,eibachspgs,KYB's,FR-upper arms,Saleen copy-polished 18's,pulleys,Bassani X pipe(off-road),C&L 80mm,Amsoil etc..

93 Ford Probe Gt(slower but turns)

07-27-2001, 01:33 PM	#1
00'BlackSteed Registered Member Join Date: May 2001 Location: Ontario, CA., U.S.A. Posts: 30	4.6L DOHC Engine Swap into a 90 GT I'm a fan of the modular engines and I wanted to know what would I need to put a 96+Cobra motor into my 90 GT other than the Engine,trans and ECU/wiring. Would I also have to change the motor mounts or would they match up? Also, how much would a Cobra motor and trans cost me? Any input on this matter or past experiences on motor swaps would be greatly appreciated. ------------------ 00'GT,(S281 clone),3 chamber flows,K&N filter,BBK underdrive pulleys & 3.73 gears. No time slip as of yet(est.13.7-13.9)

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07-27-2001, 02:35 PM	#2
96GTfanatic Registered Member Join Date: Jul 2001 Location: Philadelphia Posts: 93	I am actually planning on doing a swap also. At first I was going to do the same, but i relized how much it would cost. Wiring alone would be about $2,000. But that could be different for you, thats what my mechanic would charge. However, to put a 5.0 souped up beyond belief would give you more hp, and cost a hell of a lot less than the 4.6. I also love the modular engines, but if you dont have 3k to have the engine installed, i would go with the 5.0. Also, I don't think the old tranny will mount up to the 4.6, but I could be wrong. I know it will mount up to a 94 Gt however. Good luck.

07-27-2001, 06:47 PM	#3
blue00gt Mustang Addict Join Date: Jan 2001 Location: McKinney, TX Posts: 1,294	Not only do you need new motor mounts, you need to change to a newer style K-member and get a new driveshaft also. Probably have to change some things on the exhaust too.

07-28-2001, 08:56 AM	#4
96SNAKE Registered Member Join Date: Jan 1999 Location: allentown,pa,u.s. Posts: 780	You woudn't need a new driveshaft. You just have to switch the yoke from the 5.0 shaft to yoke from a Cobra shaft to mate with the T-45. Or you could just buy a new aluminum drvshaft for a Cobra and be done with it.. ------------------ formerly 96cobra89lx306 (96Cobra/softtop-3.73,almdrvsht,fancontrl,steeda sbfrmes+shifter,eibachspgs,KYB's,FR-upper arms,Saleen copy-polished 18's,pulleys,Bassani X pipe(off-road),C&L 80mm,Amsoil etc.. 93 Ford Probe Gt(slower but turns) [This message has been edited by 96SNAKE (edited 07-28-2001).]

07-29-2001, 01:28 AM	#5
00'BlackSteed Registered Member Join Date: May 2001 Location: Ontario, CA., U.S.A. Posts: 30	I think I am going to get a new 5.0 engine. I saw one place selling rebuilt 5.0 engines for 500.00. Instead of the engine transplant I'll just get a supercharger. Thanks for the input. ------------------ 00'GT,(S281 clone),3 chamber flows,K&N filter,BBK underdrive pulleys & 3.73 gears. No time slip as of yet(est.13.7-13.9)

08-02-2001, 12:24 AM	#6
faststang90 Registered Member Join Date: May 2001 Location: baytown,tx,us Posts: 128	i have a 90 coupe and i have been thinking of do the 4.6 change over i priced the 4.6 4 cam motors and they start at 4500, the computers r 150 i have a tko so there all i have to do is buy a bellhousing but i need the k member and new exhaust and after all this money i have a stock 4.6 cobra motor that is y im staying with my pushrod 5.0 till the price comes down on them

08-02-2001, 07:08 AM	#7
96SNAKE Registered Member Join Date: Jan 1999 Location: allentown,pa,u.s. Posts: 780	it is expensive and could be a pain in the *** but when i think of my 4.6 engine being in my old 2900lb LX, it makes me wonder how much faster that car would have been. my boat convt must weigh 600lbs more than that car.. i would do it all with used parts.. ------------------ formerly 96cobra89lx306 (96Cobra/softtop-3.73,almdrvsht,fancontrl,steeda sbfrmes+shifter,eibachspgs,KYB's,FR-upper arms,Saleen copy-polished 18's,pulleys,Bassani X pipe(off-road),C&L 80mm,Amsoil etc.. 93 Ford Probe Gt(slower but turns)