How much boost?

[USMC Gypsy]

I know this has probably been posted before but I was wondering what is the max amount of boost you want to put on a 98 3.8 with stock internals? Any help would be appreciated.

[PureVenom]

A million bajillion.

Seriously though, you don't really want to go much over 8 with a good tune. You can go 10-11, but you need to make sure the tune is really good.

[USMC Gypsy]

If it was only that easy , I have been trying to decided if I should build the six or drop in a v8, I found a gt motor for 500 or a cobra motor for around 650 and both are in good running order just wondering how much it would cost to drop it in.

[PureVenom]

I haven't done the work to look into all that it takes, but, the cobra swap, depending on year, would get you to where you'll be with the super/turbo charger...but you would just be starting instead of being at the upper limit of the stock V6....but with the stock 6 and boost you will probably come out a little cheaper.

If you are going to build a V6 with all forged and what not, and do boost, the cost will probably come out about the same as will the power depending on how high you went with your boost....

[Herbstang]

the less painful solution in swapping a v6 car to a v8, would be to locate a donor car with the correct CPU, wiring harness, drivetrain and fuel componants Here'a a small article about a swap V6 to V8 Ford Engine

[Ken Cheema]

i say do the swap

[SpectorV]

9-11 but I would do intercoolers. With a single turbo at around 7 psi you will trump a supercharger though so think about that

[SpectorV]

if you are doing a 5.0 then buy a regular mustang 5.0L and build it and drop it in, no need to go with a cobra 5.0L when you will be replacing the parts that make it a cobra motor for better ones if you build it.

[wh!te_stang]

I'd say go with the turbo it'll be cheaper and alot less of a headache

[SC_STEEDA]

Quote: Originally Posted by SpectorV 9-11 but I would do intercoolers. With a single turbo at around 7 psi you will trump a supercharger though so think about that

what do you mean you will trump a supercharger? and would it be possible to just drop a carb. v-8 into a previous v6 without having to deal with all the CPU, wire harnesses, and fuel components?

[SpectorV]

Quote: Originally Posted by SC_STEEDA what do you mean you will trump a supercharger?

Its simple, turbos make more power than superchargers... no way around it... just the way physics works. You will make far more power with a turbo than a
blower. It will take a centrifugal (procharger like) blower about 11 psi to get you to 300rwhp when a single turbo can do that on 7~

It will be simple and cheaper to drop a carb v8 into a car and get it running but you also have to deal with the older tech, tunning issues of the carb and such... FI is better all around for a DD.... but costs more.

[SC_STEEDA]

yeah i was looking at engines for my 66 and the carb. 351 windsor where like at least $2,000 dollars cheaper than FI. i was thinking about putting a 302 4bbl carb. in my 01 because i dont want to deal with the donor car wire harness, cpu, and fuel components.

[Scut95]

Quote: yeah i was looking at engines for my 66 and the carb. 351 windsor where like at least $2,000 dollars cheaper than FI. i was thinking about putting a 302 4bbl carb. in my 01 because i dont want to deal with the donor car wire harness, cpu, and fuel components.

Technically that is illegal emissions wise, but if you have to get emissions/inspection and know someone to pass it you'll be fine.

[USMC Gypsy]

I don't know about the 5.0 I was wanting to put a 4.6 cobra engine in it. I really don't know what I am going to do bc I might be heading to irag in may or june so I might just wait until I get back to do smn to my car, but thanks for all the advice everyone.

[runvsofthisbull]

With all do respect why in the hell would you want to go carb? Too many problems in my opinion being a former 68' firebird owner with a built 327 chevy. I went through 3 carbs before I found the right combo and I still had to constantly adjust and change jets...just too much pain in the ass for what a few hp? Do the Turbo/Supercharger route and you won't have to change a thing once your tune and fuel system is set. Plus its gonna be a lot more reliable and still maintain the elusiveness of a V6 car. It would be more rewarding to have the V6 take a lot of the V8 guys and have good reliablility and genuine aspects of what the car could do with a little more help than what the factory gave it. The market is endless for parts and tuners so go for the gold and make the V6 purrrrrrrrrr with a nice boost upgrade.

[USMC Gypsy]

I prob wouldn't go card anyways, and i agree with you about it being nice for the v6's to take some of the v8's............but a v6 can come nowhere close to sounding as good as a v8. I would rather have a v8 that just sounds good then have a v6 that was tc/sc. And like purevenom said if I tc/sc the 6 then I would end up having around the same hp as a base cobra engine.

[SC_STEEDA]

i feel the same way. The GT's just sound so amazing compared to the v6 especially if you have the right set up on the GT. And i dont want to dump 6K in my v6 to be at base with a cobra. dont get me wrong i love my v6 and it looks hot but i just want something under the hood that i can build off of and get more HP out of it and end up as a stock v8.

[LilRoush]

Apparently none of you guys have heard a well built V6. Screw getting a motor for sound - that is a ricer mentality. Make power and call it good.

As for the original question, it's not about the amount of boost, it's about the power level and tune. Typical answer is 350 hpis average safe top range for stock bottom end. A GREAT tune, you can do 400 plus on a stock bottom end. But I won't trust just anyone to pull off a tune like that.

If you really want a V8, sell your car and buy one. Less hassle, less money and a lot less time wasted. For all the time and wasted money of a motor swap, you can build your V6 to be just as powerful.

[SC_STEEDA]

what are you running in the picture? M112?

[LilRoush]

Yes, ported M112.

[jimmy_beaner]

Quote: Originally Posted by LilRoush Apparently none of you guys have heard a well built V6. Screw getting a motor for sound - that is a ricer mentality. Make power and call it good. As for the original question, it's not about the amount of boost, it's about the power level and tune. Typical answer is 350 hpis average safe top range for stock bottom end. A GREAT tune, you can do 400 plus on a stock bottom end. But I won't trust just anyone to pull off a tune like that. If you really want a V8, sell your car and buy one. Less hassle, less money and a lot less time wasted. For all the time and wasted money of a motor swap, you can build your V6 to be just as powerful.

the point is: you can build the v6 up to 350-ish hp... and be nearing the top of what the v6 can put out or handle without full rebuild, or you can drop in the v8 and have a higher ceiling. For instance, the GT can handle 450-ish on the stock bottom end. Plus, if you build the bottom end of the GT, you'll have an easier time making more power. There is no replacement for displacement.

[SpectorV]

its great to have all these choices, the bottom line is do what you want not what gets you by

[SC_STEEDA]

how much are you making with the M112? and what hood did you put on to get the clearance?

[LilRoush]

Quote: Originally Posted by jimmy_beaner the point is: you can build the v6 up to 350-ish hp... and be nearing the top of what the v6 can put out or handle without full rebuild, or you can drop in the v8 and have a higher ceiling. For instance, the GT can handle 450-ish on the stock bottom end. Plus, if you build the bottom end of the GT, you'll have an easier time making more power. There is no replacement for displacement.

I already know wasting my time talking tech to you....
But for the cost of the 4.6L swap, you can make more on the V6.
Now if you are building the 4.6L and swapping, you can just as well build the V6 and make just as much power. It's just that simple.
None of these guys looking to V8 swap are going to put down more than what the top V6 motors do. I say that because if someone is asking about the swap, chances are they don't have the nohow or budget to make a 700 + hp engine.

The replacement for displacement is being smart.

[LilRoush]

Quote: Originally Posted by SC_STEEDA how much are you making with the M112? and what hood did you put on to get the clearance?

My hood is 2 1/2" cowl. My specs are on a lot of the other V6 forums, I won't clutter up this thread.

[Ken Cheema]

Quote: Originally Posted by LilRoush I already know wasting my time talking tech to you.... But for the cost of the 4.6L swap, you can make more on the V6. Now if you are building the 4.6L and swapping, you can just as well build the V6 and make just as much power. It's just that simple. None of these guys looking to V8 swap are going to put down more than what the top V6 motors do. I say that because if someone is asking about the swap, chances are they don't have the nohow or budget to make a 700 + hp engine. The replacement for displacement is being smart.

i understand your point. but for me personally the point of a swap would be to have more potential in the engines capabilities. if you take a v6 and a v8 to there max the v8 wil put out more right? thats just my point. other wise i am in compliance with you as well.

[LilRoush]

Yeah, but how many of those swaps end up going the MAX a v8 can do or even 700 hp or more? Very few. And the ones that do go that far aren't starting threads asking how to do it b/c they already know what it takes.

Most guys dump thousands into a swap that gets them to a stock 260 flywheel hp V8. Such a waste of time and money. Swapping in a stock motor is a waste. Stock V6 block can take over 700 hp. You aren't doing that with a stock V8 block, you'll be starting with an aftermarket block and building from there.

[jimmy_beaner]

Quote: Originally Posted by LilRoush I already know wasting my time talking tech to you.... But for the cost of the 4.6L swap, you can make more on the V6. Now if you are building the 4.6L and swapping, you can just as well build the V6 and make just as much power. It's just that simple. None of these guys looking to V8 swap are going to put down more than what the top V6 motors do. I say that because if someone is asking about the swap, chances are they don't have the nohow or budget to make a 700 + hp engine. The replacement for displacement is being smart.

dick.

And that isn't necessarily true. It depends to a large degree how expensive the motor you swap in is.

[LilRoush]

What part of what I posted isn't true?

Like I said. None of the people asking about a V8 swap are going to be doing 700 + hp motors. So the "limit" of the V6 is beyond what they are going to make anyway. Hense, no point in swapping hassles.

[USMC Gypsy]

The main point of the swap is insurance, my insurance is going to be 2400 every 6 months on a 98 gt and even more on a cobra. Right now I pay 90 a month on a 98 with a 3.8. So in my boat the swap eventually pays for its self. And that quote is on me not having one single speeding ticket (that i got caught for ) and only one wreck, and the wreck wasnt even my fault.

[LilRoush]

Just FYI, if you swap to a V8, you have to pay V8 insurance. If you don't tell them you swapped, and they find out - it's called insurance fraud. You go to jail for that.

[USMC Gypsy]

ssssshhhhh dont tell anyone...... :jail: naw just kidding i really didnt even think about that

[jimmy_beaner]

Quote: Originally Posted by LilRoush What part of what I posted isn't true? Like I said. None of the people asking about a V8 swap are going to be doing 700 + hp motors. So the "limit" of the V6 is beyond what they are going to make anyway. Hense, no point in swapping hassles.

Some people may want the challenge of doing the motor swap. Hell, I'm sure you could take a 4 banger and get some serious power out of it too.. but that doesn't mean everyone WANTS to. Some people swap a v10 into the Mustang... why would they do that when the 8 can get them to such power?? ... perhaps because they want bragging rights of saying they have a v10... perhaps for the fun of the swap. You don't KNOW someone's intentions right off the bat. Everyone has to start learning somewhere.

[PureVenom]

^^^ Or because they want to be able to put down 700 rwhp on 93 pump gas instead of using 116.

However, this has been debated at length in another thread that has been closed due to unsubstantiated "facts" being posted up.

Let's get back to topic of how much boost and get away from why it is such a better idea to swap out all motors to the 3.8L V6 when you want to make real power.

[jimmy_beaner]

Quote: Originally Posted by PureVenom ^^^ Or because they want to be able to put down 700 rwhp on 93 pump gas instead of using 116. However, this has been debated at length in another thread that has been closed due to unsubstantiated "facts" being posted up. Let's get back to topic of how much boost and get away from why it is such a better idea to swap out all motors to the 3.8L V6 when you want to make real power.

sorry Rob