just wondering what kind of boost levals are being safly seen by the new 5.0's? i've been considering getting a 2011/2012 and boosting it, but seems the price of the car plus the cost of a turbo kit (which i would prefer) puts the car into gt500 price range. at that point it makes it hard to choose. also what kind of #'s are people making with "safe boost"?
11/1 compression and boost?
Theredmist
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just wondering what kind of boost levals are being safly seen by the new 5.0's? i've been considering getting a 2011/2012 and boosting it, but seems the price of the car plus the cost of a turbo kit (which i would prefer) puts the car into gt500 price range. at that point it makes it hard to choose. also what kind of #'s are people making with "safe boost"?
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140 Posts
Ill go turbo if i take the dive so i may see a little higher numbers. Lower iat's and less drivetrain loss. With the exception of the pistons what else is keeping these motors from seeing +700?
I think you will be much happier with a SC instead of a TC.With the turbo you have to take things like driveability,surging,bov fluttering,etc into consideration.It takes more to get a turbo car running smooth for street use than a Super charger,dont foreget turbo lag.Just my 2 cents.
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140 Posts
Play toy. Im gonna drag it, im gonna auto x it, I'm gonna drive it on the streets, and I'm gonna enjoy it. I would like to see +800 to the tires eventually. I'm thinking hellion twins is where I'm headed. I would go for a single but they mount the turbo way to low for my taste and its just begging for a puddle.
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140 Posts
Well beauty of a boost controller is you don't have to run 800hp if you don't want to. Im not gonna be using this car as only one thing its a play toy and im gonna treat it as such.
Ponywars is right. This idea may be coming from a place of someone who hasn't had to tune and set up a non-factory turbo car to run on the road.
Some more knowledge is needed here. IAT (Intake Air Temp) is typically sky high in non-factory turbo apps, due to the filter being in a boiling engine bay. It's BAT (Boost Air Temp) that can be lower because of intercooler efficiency and the fact compression of the charge isn't all happening at the hot engine.
The fact that IAT is high actually means pretty much jack **** anyway, in a turbo app, since the heat of compressing the charge is far worse than anything coming from a few degrees of higher IAT.
However, a common missed thing, for street use, is that superchargers can and do run step-up gear ratios in the nosecase. This minimizes lthe hp cost to drive them and makes them very responsive in street use. Turbos, to get good response, you need to tighten up the A/R on the turbine side and you can box yourself in and cross the surge line if you aren't careful with sizing. This is why twins tend to be more responsive than singles, because you can run a smaller turbine A/R without choking off the engine's exhaust flow.
There's also the long term durability questions of putting one or two massive heat pumps underhood, baking everything to a golden brown. This can have long term consequences to electronics, seals and rubber parts, etc.
I'm not saying don't go turbo but, just know what your are really signing up for beyond what's portrayed in the net vids of shop car rockets. I've used every power adder there is at one time or another, mostly on the same car. Most power, simplest? Nitrous, no question. Turbos? Insane power too but, lots of little headaches continually. Centri supercharging was the most fun for the least hassle. Easy install, great on the street and the track.
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140 Posts
First off its not a dd. i have 3 cars and ive always wanted a turbo mustang. Blowers are awesome and typically cheap(centri) but it doesnt change that I want a turbo mustang. Ive concidered running a vortech blackout kit just because it looks so clean.
No sweat, man, do what you like; just know what you're getting into. I've had my share of turbo cars, factory and non-factory, rebuilt my own turbos, squeezed my own head-gaskets with them, etc. 
I sure don't find blowers too cheap today...just compared to turbo kits, lol. You still need about 6K for even a centri SC kit to do it all, self-install.
My rationale for not doing something like this on this car, as I've done in the past, is full of the usual excuses:
-Too much $$$
-DD
-Kick me off the track for not wanting to cage my street car
I sure don't find blowers too cheap today...just compared to turbo kits, lol. You still need about 6K for even a centri SC kit to do it all, self-install.
My rationale for not doing something like this on this car, as I've done in the past, is full of the usual excuses:
-Too much $$$
-DD
-Kick me off the track for not wanting to cage my street car
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554 Posts
I would assume with the VCT you could tune in enough overlap in the cams to bleed off a little boost to help make it safe, but you'd still be limited to low boost (10-11#'s). You'd be better off dropping your compression down to be safe and allow for the ability to up the boost later.
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140 Posts
i had similar feelings about the pistons. i worry about trying to run anything near 10lbs on that high of compression. well either way i have to find my car first. i really want a 2013 gt, but the 10k saved from buying a 2011 is pretty tempting lol.
you can reach your goals for far less than a turbo with a good paxton setup.
you can make 700rwhp or so on the stock fuel system with a bap and good injectors,
if your plans are for 800, then i would go for an upgraded fuel system out of the gate.
the paxton 2200 is hands down the best band for the buck, i have about 50-60 5.0 cars out there running around with this setup with 0 issues
you can make 700rwhp or so on the stock fuel system with a bap and good injectors,
if your plans are for 800, then i would go for an upgraded fuel system out of the gate.
the paxton 2200 is hands down the best band for the buck, i have about 50-60 5.0 cars out there running around with this setup with 0 issues
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140 Posts
Although it seems people are making huge hp numbers, whats with the lower tq numbers? I keep seeing +600hp and 430tq. Is that a common trend for coyote?
Centrifugals don't make the torque that a PD or turbo setup will.
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