After my GT comes in (manual tranny), I'll be getting a supercharger hopefully within 6 months or so. Until then, I'd like to get some new gears and the Diablo Predator. Will 4.10s work well with the supercharger? Will they be too much, should I go for 3.73 instead? Other than the supercharger, the only other mods I plan are gears and the Predator.
Since my GT is on order, does anyone know if they'll install a different rear end from the factory? If so, would that be a good way to go?
Sorry for all the questions. Any thoughts and assistance are appreciated.
From what I've read on this forum, people say that the 4.10's are a bit much WITH the supercharger. Without the S/C a lot of people say the 4.10's are the way to go. Hope this helps.
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Joined: 2/15/2005 From: San Diego, CA Status: offline
Birdieman is the main person to ask this question, but from what he has explained to me is that the stock 3.55 gears in the manual are a good solid gear for the sc. As for the Predator, depending on the sc, you get that as part of the package. The ones that include it are the Paxton and Vortech, which are centrifugal sc's.
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R.I.P. - 05 Windveil Blue GT + many add-ons/upgrades
Run the stock 3.55's with the blower for a while before you decide to go shorter on the gears. The last thing you want to do is do the blower and the short gears all at once, then decide later you wanted 3.73's or 3.55's. MDValdosta runs 4.10 gears with a vortech, and he likes it. I would say you are better off with 4.10's on a centrifugally supercharged car than on a positive displacment supercharged car. (twin screw). Mostly because of the low end torque the screw produces. If you are making 350 ft lbs of torque at 2700 rpms, you don't need shorter gears to help you 'get through' your rpm range.
Thanks for the responses, that helps a lot! I'll almost certainly go with a twin screw (considering the Whipple), so I guess I'll stick with the stock gears for a while. I know the Whipple come with a custom flash or some such, but I don't think it comes with a Predator or anything similar. Might get a body kit which would go on before the blower and wanted to make sure there was a little more "go" to back up my "show", but don't want to to pulleys or anything; the SC will be enough when it gets on. Sounds like the Predator will have to do until then. Any comments about the Whipple or anything else? Thanks again!
header pipes should help get rid off all the extra gasses spent after all that air and gas gets forced down your stangs throat and some applicatins make a big improvement over stock set up specially if you get a big power adder like a S/C.
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Posts: 466
Joined: 2/15/2005 From: San Diego, CA Status: offline
The Whipple is out and is $5495 for the regular and $6095 for the polished version. Whipplesuperchargers.com
As for another twin screw, the Saleen Series VI comes highly recommended (Birdieman) and retails for $4999, but is available on e-bay presently for $4599. Shipping runs $85-$100 to San Diego, so I am sure that it will not be any more to where you are now.
It sure does. Thanks. I'll put the Saleen on my "to think about" list. It's all academic until the car comes in anyway.
The Saleen advertises 400hp and 420 lbs of torque, where the Whipple site says "nearly 475HP and over 500 lbs of torque". I'd rather have the higher numbers , but could the same be had from the Saleen by changing the boost (and how easy...)? Also, Whipple's dyno graph starts at 3k RPM, is that the earliest I could expect to see the extra power, and is that the typical low end on a twin screw? Would prefer to see gains closer to idle, but I don't know much about this stuff (yet).
The Saleen advertises 400hp and 420 lbs of torque, where the Whipple site says "nearly 475HP and over 500 lbs of torque". I'd rather have the higher numbers , but could the same be had from the Saleen by changing the boost (and how easy...)? Also, Whipple's dyno graph starts at 3k RPM, is that the earliest I could expect to see the extra power, and is that the typical low end on a twin screw? Would prefer to see gains closer to idle, but I don't know much about this stuff (yet).
As much or more is avalible from the Saleen blower. The 400 hp S281sc is making 5 lbs of boost. If you run 8 psi on a screw blower, you will se instant boost at the hit, even at 2000 rpms. Your torque will go straight up, literally. It is actually quite impressive. If you want power at the hit of the throttle, regardless of rpm, go twin screw. The biggest reason I like the Saleen series 6 blower is it utilizes a dual heat exchanger(intercooler) system, which makes it extremely efficient.
The Saleen advertises 400hp and 420 lbs of torque, where the Whipple site says "nearly 475HP and over 500 lbs of torque". I'd rather have the higher numbers , but could the same be had from the Saleen by changing the boost (and how easy...)? Also, Whipple's dyno graph starts at 3k RPM, is that the earliest I could expect to see the extra power, and is that the typical low end on a twin screw? Would prefer to see gains closer to idle, but I don't know much about this stuff (yet).
As much or more is avalible from the Saleen blower. The 400 hp S281sc is making 5 lbs of boost. If you run 8 psi on a screw blower, you will se instant boost at the hit, even at 2000 rpms. Your torque will go straight up, literally. It is actually quite impressive. If you want power at the hit of the throttle, regardless of rpm, go twin screw. The biggest reason I like the Saleen series 6 blower is it utilizes a dual heat exchanger(intercooler) system, which makes it extremely efficient.
I was looking at that S/C on ebay. It mentioned that there was no warranty with it. I'm assuming they mean no warranty only through them. I'm guessing that there is a factory warranty. Do you know what it is Birdieman?
The Saleen advertises 400hp and 420 lbs of torque, where the Whipple site says "nearly 475HP and over 500 lbs of torque". I'd rather have the higher numbers , but could the same be had from the Saleen by changing the boost (and how easy...)? Also, Whipple's dyno graph starts at 3k RPM, is that the earliest I could expect to see the extra power, and is that the typical low end on a twin screw? Would prefer to see gains closer to idle, but I don't know much about this stuff (yet).
As much or more is avalible from the Saleen blower. The 400 hp S281sc is making 5 lbs of boost. If you run 8 psi on a screw blower, you will se instant boost at the hit, even at 2000 rpms. Your torque will go straight up, literally. It is actually quite impressive. If you want power at the hit of the throttle, regardless of rpm, go twin screw. The biggest reason I like the Saleen series 6 blower is it utilizes a dual heat exchanger(intercooler) system, which makes it extremely efficient.
Great! Thanks Birdieman! Looks like the Saleen it is. What would be needed to change the boost on the Saleen? I've heard you can change the pulleys, but I don't know how involved something like that is. Would it have to be done at a shop or could I do it myself, are the parts readily available, etc?
I was looking at that S/C on ebay. It mentioned that there was no warranty with it. I'm assuming they mean no warranty only through them. I'm guessing that there is a factory warranty. Do you know what it is Birdieman?
The blower is fully factory warrantied.
quote:
Great! Thanks Birdieman! Looks like the Saleen it is. What would be needed to change the boost on the Saleen? I've heard you can change the pulleys, but I don't know how involved something like that is. Would it have to be done at a shop or could I do it myself, are the parts readily available, etc?
To change the boost, all you need is a smaller pulley and a way to tune it. The smaller pullies are probably not avalible just yet, but you can have some made off your original pulley by a decent machine shop.
With the added power of the SC I think the 4.10s would actually slow you down due to the inability to get a good hook and you may have another shift in the 1/4. In my Procharged 2000 I had 373's and it sucked, I switched out to 355's and should have done 3.27's. If you invest in a good set of drag radials and spend some $ on suspention 4.10's may be OK.
I plan on keeping the 3.55's if I go forced induction, and 4.10's if I stay NA.
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2004 F-150 FX4 on 20's 1995 Camaro Z28 355CI with an intercooled HKS custom single turbo kit pushing 720 horses
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Awesome. Thanks for all the help, everybody (esp. Birdie)! Looks like I'll be sticking with the 3.55's, going with the Saleen Series VI, and bumping the boost to around 8 lbs. while talking to my local performance shop for a tune.
This is exactly the info I was hoping for. Go MustangForums!
Since you seem to be one of the leading authorities on the supercharger topic, I was wondering if you knew how much boost the stock internals on the 05/06 can handle? By handle I mean daily driver and the car won't puke after 100K but will still kick @$$.
Since you seem to be one of the leading authorities on the supercharger topic, I was wondering if you knew how much boost the stock internals on the 05/06 can handle? By handle I mean daily driver and the car won't puke after 100K but will still kick @$$.
8-9 psi on a stock 05 motor is the magic #. But, we really aren't talking max boost, we're talking max rear wheel hp. With 8-9 psi on a car with an exhaust upgrade should put you around 440 rwhp. The magic safe rwhp # is around 450, + or - a little bit.
Birdieman would it be safe to run a s/c without an intercooler? Paxton is about a little over $1500 without it. Would I e asking for trouble running 8psi without it. And I don't know if it makes a difference, but it will not be a daily driver. Just on warm dry days. Thanks
You wouldn't necessarily be asking for trouble if you ran a Novi w/o an intercooler. But, I personally would get an intercooler if you are going to run more than 5-6 psi. The intercooler starts to really help after 5-6 psi. If you were going to run a Novi kit with only 5 psi, I say forget the intercooler. Above that, I strongly recommend you go with some type of aftermarket intercooler. At 9 psi, a cooler air charge into the motor will help your car's efficiency a lot. Ever considered doing a twin screw?
Yes Birdie that seems to be the way to go. My only other question is, is it worth $6000. 5 for the s/c and a grand for install and tune. I'm not that exp in cars, but i would think for 6 grand, you could make close to those #'s n/a. And not even had to consider breaking anything?
Yes Birdie that seems to be the way to go. My only other question is, is it worth $6000. 5 for the s/c and a grand for install and tune. I'm not that exp in cars, but i would think for 6 grand, you could make close to those #'s n/a. And not even had to consider breaking anything?
I think 6k is a pretty good deal when all is said and done. You will never see the hp #'s if you go n/a. With the Saleen setup, you won't break anything. -As long as it is tuned correctly.
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4.10s and a supercharger? - 
It's all academic until the car comes in anyway. 
, but could the same be had from the Saleen by changing the boost (and how easy...)? Also, Whipple's dyno graph starts at 3k RPM, is that the earliest I could expect to see the extra power, and is that the typical low end on a twin screw? Would prefer to see gains closer to idle, but I don't know much about this stuff (yet).
