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Roush mustangs

Old 05-29-2014, 05:53 PM
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trelvis56
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I've got a 2003 Roush stage ! with stage 3 bodykit. The car is beautiful but it has a v6 and I desperately want a v8 in it. Anybody got any ideas about changing the motors out?
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Old 05-29-2014, 09:11 PM
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Ideas?.. Let's see some pictures for fun. How much are you thinking you'll want to spend? Wanting N/A or Power Adder?
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Old 05-30-2014, 12:33 AM
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427Roush
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Paxton S/C for your V6. That should give ya 370 HP.
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Old 05-30-2014, 09:29 AM
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Look in the v6 section for the eaton supercharger swap.
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Old 05-30-2014, 02:22 PM
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trelvis56
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Originally Posted by SonicBlue98GT
Ideas?.. Let's see some pictures for fun. How much are you thinking you'll want to spend? Wanting N/A or Power Adder?
I'll post some pictures as soon as I figure out how. lol As far as how much I would like to do it as economically as possible. Some have suggested superchargers but that's about 5k and still doesn't have the sound a v8 does.
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Old 05-30-2014, 02:44 PM
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https://mustangforums.com/forum/v6-1...tallation.html
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Old 05-31-2014, 06:33 AM
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I would just supercharge it with the eaton blower. It's too much work to swap a V8 into a V6 unless you don't have a time limit for your car to be on the road, and about $2500 for an engine/harness. Also, FYI you can buy an eaton pretty cheap, anywhere from $200-500.
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Old 05-31-2014, 07:04 AM
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LilRoush
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Couple of points for clarity, you have a Roush Stage 1 with a Roush Stage 1 body kit. There is no such thing as a Stage 3 body kit in 2003. 2001 was the only year that it was exclusive to the Stage 3. Starting in 2002, all Stage 1-3 cars got the same (full) front end. The Sport was the add on spitter all the way until 2004.

You don't want to waste time with the motor swap. It's way more hassle than it's worth.
If you want more power, I would suggest the Pro Charger set up or the Eaton. There is only one Eaton swap you can do. It's not the M90 from the SuperCoupe T Bird like many people assume. That M90 was on the earlier style heads and parts are set up for the older fuel system. It's not worth it either.

The M112 kit was developed and built by me to meet my needs on the track. People liked it so much that I started making kits. If you want a great power band, Eaton whine and low cost, it's the way to go. Sadly, many knock offs have been made and none make the same power as my design. Many also have heat issues. I stopped making them b/c I didn't have the time anymore as my career took off.

Due to the increased demand again, earlier this year I teamed up with Oritz Performance in Texas. Luis has my design now and is starting to make the 'good' boxed upper intake again.

My old V6 Roush (#5004) was the test car for the M112 about ten years ago.

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Old 05-31-2014, 07:10 AM
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This might answer a lot of your questions:

https://mustangforums.com/forum/v6-g...iscussion.html
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