Mustang V6 SOHC to DOHC Conversion?
- Thread starter bwalker25
- Start date
Setec Astronomy
Well-known member
You're talking about buying an '08 (new) Mustang and converting it from SOHC to DOHC?
imported_themightytimmah
New member
Heh, that's probably not a job you want to get involved in. If you want a power bump, switching to a more aggressive cam profile will give you all the power of a DOHC swap with a slightly lumpy idle and slightly worse gas mileage.
imported_weekendwarrior
New member
Why would you do all of this to a V6 (and void your warranty) when you could just buy a V8?
Oh I wouldn't I dont have deep pockets 
I was just wondering what was involved...I would just save up and get the GT model....I was asking because someone else asked here where I work, I told them the same thing, just get the V8......From what I have read already it WAY to much to do the dohc / turbo setup vs get the v8 and turbo that...
I was just wondering what was involved...I would just save up and get the GT model....I was asking because someone else asked here where I work, I told them the same thing, just get the V8......From what I have read already it WAY to much to do the dohc / turbo setup vs get the v8 and turbo that...Finaltheorem47
New member
Buddy, the 4.0's are pushrod engines, there is no 4v version!
The 4.6 is a modular over head cam engine. It comes 2v as a GT or 4v as seen in cobras and mach 1's If your planning on swapping a 2v for a 4v, you really need a 4v engine to pull the parts off of, even up to the wiring on the engine, you need to swap it with 4v stuff!
The 4.6 is a modular over head cam engine. It comes 2v as a GT or 4v as seen in cobras and mach 1's If your planning on swapping a 2v for a 4v, you really need a 4v engine to pull the parts off of, even up to the wiring on the engine, you need to swap it with 4v stuff!
Finaltheorem47 said:
You're almost correct. The 4.0's are indeed pushrod engines, however, mustang GT's since the most recent redesign have the 4.6L mod motor with 3 valve heads and variable valve timing (hence the bump from 260hp to 300hp in the 2005 model year.
Switching to a 4v would make no sense, since the 4.6L DOHC really didn't make any more power than the current 3v.
You want more power out of a 4.6? Supercharge or don't waste your money. You want more power out of a 4.0? Trade it for a GT or don't waste your money.
If the block is similiar enough, swapping from SOHC to DOHC would require a head change. This is done with many Hondas as well. It's not cheap considering you're pretty much replacing half the engine. SOHCs work great turbo, your power yield is a lot more significant going this route than most NA routes.
mysteryan said:
Despite the fact that ford calls them modular motors, they're not particularly "modular"
Top swap won't cut it, i'm afraid. And, as i mentioned before, the 4.6L 3v VVT in the 05+ GT's is as good as the 4v motors ever were. The way to go with these motors is a blower.
Try looking at 07 GTs? Modding a V6 Stang to make it faster is kind of a losing proposition (no offense), as others are saying here. The V6 is made for people who just want an all-show car and couldn't care less about performance.
The GT has modding potential. Or better yet, rewind a few more years and get a Cobra heh
The GT has modding potential. Or better yet, rewind a few more years and get a Cobra heh
imported_sal3291
New member
Im confused? You want to buy a 4.0L V6 and swap it for what DOHC motor? The current GT has a 3V.
Check out The Corral - Home and or Ford Mustang Forums News and Classifieds
Check out The Corral - Home and or Ford Mustang Forums News and Classifieds
David Fermani
Forza Auto Salon
The only 2 things you'll need to do to blow away a V8 = Big turbo & gut it.
David Fermani said:
yep, and it will still sound like a V6. It kills me with my buick. The supercharger whine sounds great, but the 3800 sounds crappy at revs...most V6's do, at least in comparison to V8's. My buddies GT with borlas...I can still give him a run for his money but he sounds totally sweet getting embarrassed by my grandpa car.
justinschmidt1
New member
Im a stang guy...ive got a 96 GT with a 4.6 v8.....but I honestly have no idea what your asking here.
There is no way to convert a 3.8 or the new 4.0 v6 mustangs becuase they are pushrod engines like people have said.
The 05+ 3v engines respond better to bolt ons than the 4v engines IMO.
If you want a fast v6 buy a 4.0 and turbo it.
They can be made fast but you might as well start off with the GT and put a blower on that.
The new GT's can run 12s with very little work.
Gears, intake, tune, exhaust with some sticky tires can get those cars into the 12s.
There is no way to convert a 3.8 or the new 4.0 v6 mustangs becuase they are pushrod engines like people have said.
The 05+ 3v engines respond better to bolt ons than the 4v engines IMO.
If you want a fast v6 buy a 4.0 and turbo it.
They can be made fast but you might as well start off with the GT and put a blower on that.
The new GT's can run 12s with very little work.
Gears, intake, tune, exhaust with some sticky tires can get those cars into the 12s.
brianshaeffer
Member
The 4.0 engine in the 2005+ Mustangs is not a pushrod engine. It is a SOHC, 2 valve engine, based on the old German pushrod V6. The SOHC version has been in production since 1997 in various Rangers and Explorers.