3.5 V6 twin turbo..... has it been done?

[scorp]

I'm only wondering cause i have been thinking about doing it. I know I will get a lot of people saying I should suck it up and just go into a 5.7 or a SRT8 but what's the point when the car scene is all about being unique and doing something different.

After some searching I see that the Hellion set up would be best, who cares if you don't see the turbos. Only real thing to change is the turbo size to a slightly smaller turbo set up and also use the Stage 2 SRT-4 injectors instead of the stock SRT-4 injectors that come in the kit. Another thing I would change would be a Stage 2 3bar SRT-4 MAP sensor.

The next minor issue would be the custom headers but thats nothing a little welding and fabing can't fix.

So in the end all that is needed is the turbo flanges and the hot side IC piping. Cold side will obviously have to be fabbed up as well but that will just be some mandrel bent 3" exhaust pipe.

Any input from the turbo gurus on here would be great.

[CT-MSRT]

how much power are you looking to go for here? you are looking at a sizable chunk of money in parts, not including finding someone to build a forged motor. you'll need an SRT transmission at least or more depending on power levels. you'll need a SRT or better rear end and axles to put it to the ground. Someone has to tune it for you as well. are you going over 400hp and upping the boost or are you just staying within stockish (or mildly modified) SRT power levels after it is all said and done anyway?

all it ever takes is money and some effort (or a lot of hard work if you don't throw money at it). being unique is certainly one thing, but there is a lot more to an SRT than just more power. I'd say do some more research before you start down a road you may not be happy with.

[gbneufeld]

Ya man, twin turbo is some serious power and those 3.5 internals do not have the gusto.

[ircp10]

there's at least 3 single turbo's that I've heard of that are in the 350 hp range on stock rears and nag1's the one guy who had a 4 sppeed nuked it the first week or so. the advantage of a twin turbo is gonna be getting the torque up there quicker, which then points to the 198mm rear end as a week link. As far as the 3.5 the forged/semi forged and I've been running 10.5-11.5 psi for a close to a year. One of the guys with the MM kit is running 13 PSI so far so good. I say do it and we'll see what breaks first

[eGo]

there's at least 3 single turbo's that I've heard of that are in the 350 hp range on stock rears and nag1's the one guy who had a 4 sppeed nuked it the first week or so. the advantage of a twin turbo is gonna be getting the torque up there quicker, which then points to the 198mm rear end as a week link. As far as the 3.5 the forged/semi forged and I've been running 10.5-11.5 psi for a close to a year. One of the guys with the MM kit is running 13 PSI so far so good. I say do it and we'll see what breaks first

Any new times vs. what's in your sig running at 13PSI? I think TT sounds awesome, but as others have mentioned, getting forged pistons and a better rear end are probably a neccessity.

eGo

[shok]

What hellion setup is he referring to?
I'm all for the idea, but the pistons do worry me a bit. Are we talking a twin setup but with maximum boost limited to what the single guys are running or will you go past that limit?

[scorp]

Well I was thinking of working off of the Hellion TT set up but after looking at it mire its nit even working off their set up. if I do go the TT route then I'm going from scratch. Smaller turbos for sure. More like 2 15g turbos from an srt-4. I know a lot of guys in the srt-4 scene so aquiring them used will be easy. Injectors, MAP and TIP sensors will be easy to get from them too. All of that will be under $800 and then maybe another $100-150 for an IC. At that point its just all fab work so under $2000 for the setup installed.

[formerice]

I respectfully disagree with CT-SRT8. I've seen the stock transmission and differential in a RT take quite a lot of power. I assume the 5 speed NAG 1 in the SXT is same as the RT and SRT8 and if the differential and axles are the same, no worries. I'll bet in a few years Chrysler will be twin turboing the Pentastars. A lower compression forged motor would be ideal, but if you keep the boost sane, a stock motor would work fine. I think your on the right track using the small turbos. Hell if you can do it all for 2 grand !

[PRPLHAZE]

V6 rear ends are 198mm. R/t is 210 srt 215 then there is the 226mm. Unfortunately the differential mounting points are different from sxt/se to r/t and srt. A rear cradle would be needed. I kicked around the idea if putting a v6 3.64 rear with axles in my r/t but after putting one in my dads se challenger, i saw that the differential mounting points at the cradle are different. Also there are a couple of supercharged v6 guys with the nag1 and stock rear end that haven't broken anything yet.

[furious70]

I had about $800 in pipe, fittings, and flanges in the TT383 build for my Fury, the metal adds up fast. I did all the fab and welding myself, that was just material costs. 3.5 is a small engine, should be significantly cheaper to do a single.

[5.7 hemipolara]

Arent the 3.5's forged crank, rods and pistons? Should hold up fine with a single.

[theereverand]

The 3.5 has forged crank and rods. I am running 13lb of boost with a vortech v3 setup and have put a little over 8500 miles on the setup. I am considering the turbo as well. Keep us posted on what you do. I like the torque a turbo setup gives, but I may add some NOS to the game and see what she does. The 3.5 v6 motor is only 1500-2000 versus the hemi. I am enjoying my car and have checked into a hemi conversion setup, but I like the idea of having something different. The hemi conversion is 7500-10500. I say go for it!