Redskin28 Posted December 20, 2007 Report Share Posted December 20, 2007 Still kicking around the SC those that have done it what are the real life differences. Does anyone have a 1/4 mile time before and after. What did it do to you gas mileage? How does the car feel now? Are you glad you did it? How many more horses? Link to comment Share on other sites More sharing options...
Cobrawertz_merged Posted December 20, 2007 Report Share Posted December 20, 2007 Still kicking around the SC those that have done it what are the real life differences. Does anyone have a 1/4 mile time before and after. What did it do to you gas mileage? How does the car feel now? Are you glad you did it? How many more horses? Shelby GT w/ the Whipple is insanely fast. No 1/4 mile times yet but I liked it so much I did it twice. Rick Link to comment Share on other sites More sharing options...
SGT2666 Posted December 20, 2007 Report Share Posted December 20, 2007 I went with the Whipple, I haven't dynoed it yet but the claim is 575hp. The effect on gas mileage is pretty meager maybe a mile or two to the gallon but the effect on driving is extreme a blower makes an already fun car into something amazingly fun. The Whipple is pretty much imperceptable under most driving conditions as far as noise goes, the only time you hear it at all is when you have your foot in it. I haven't run my car at the drags but one of the guys with a paxton is running mid 11's with his and Hot Rod magazine did a car not long ago and ran 11.8's with minimal effort with a Whipple. The car is as docile or ferocious as you want it to be it all in the right foot. I absolutely love driving my car with the blower, its definitely not something you would regret :D Link to comment Share on other sites More sharing options...
LuLu Posted December 21, 2007 Report Share Posted December 21, 2007 Still kicking around the SC those that have done it what are the real life differences. Does anyone have a 1/4 mile time before and after. What did it do to you gas mileage? How does the car feel now? Are you glad you did it? How many more horses? Fairly broad questions, Red, and I don't think you should expect a solid, focused answer on them very soon. Lots of gents here have made their decisions and placed their order, but much of the final work isn't complete. And, unless they are from a sunshine state (lower CA, and all of FL), most race tracks are closed for the winter. Likewise before/after dyno data. Keep in mind that strapping down on a dyno cost money, and very many here have not bothered to do this "before/after" study. It's not that they want to keep secrets, the facts are just not that important to them. You have to be a real car guy to endure such trials to your wallet, and dice out the 411 for free on a web site. Many just haven't bothered. Meanwhile, any supercharging will improve base performance, no question. Haven't heard much about turbocharging here, but turbos are very popular at other Mustang web sites. Here, the discussions seem to revolve around which supercharger is the right way to go. Whipple/Kenne Bell positive displacement, or, "twin screw" style of blower, and the venerable Paxton/Novi centrifugal style that holds a lot of sentimental value within Carroll Shelby's accomplishments. In the end, both are superchargers, but each has it's own attributes and shortcomings, and folks will argue endlessly over that. After years of experience in this science, I'm a centrifugal fan, and I'll end that here. But, I'll add that supercharging does not significantly impact MPG. Both styles are engaged full time, but not always providing boost, Thus MPG is more related to your control over your right foot. When you want power, it's there, and this will consume fuel. But, if you're just out for a casual cruise, you should not expect any other than normal fuel usage. In fact, do it right and your MPG could improve. It's all in the tune. So, hang around a while, it's going to get better in the spring. Happy holidays, be safe. Link to comment Share on other sites More sharing options...
ShelbyPilot Posted December 21, 2007 Report Share Posted December 21, 2007 Still kicking around the SC those that have done it what are the real life differences. Does anyone have a 1/4 mile time before and after. What did it do to you gas mileage? How does the car feel now? Are you glad you did it? How many more horses? No 1/4 mile times. Maybe after the Birthday Bash. I hope mine are better then Sue's. MPG. I can't tell you how it changed from a stock Shelby GT as mine has always had the supercharger. However, my computer program says I average 15.73 MPG. However, i do very little highway driving and have a heavy accelerating foot. When I do, I have seen the message center reading around 28 MPG. I don't know if that helped or made it more confusing. The car feels awesome but I don't have a baseline to compare it to. Very glad I did it. 441 RWHP and 399 RWTq. Link to comment Share on other sites More sharing options...
fatboy_merged Posted December 21, 2007 Report Share Posted December 21, 2007 if i had a supercharger installed would it void the warantee? Link to comment Share on other sites More sharing options...
SGT2666 Posted December 21, 2007 Report Share Posted December 21, 2007 The 500 horse Whipple can be bought with full warranty I believe. I was getting 22 mpg avg and now 19 but I've changed wheels and the speedo is a little off so I'm thinking that may be the difference. 15 mpg I think SoCal has a lead foot :D Link to comment Share on other sites More sharing options...
ShelbyPilot Posted December 21, 2007 Report Share Posted December 21, 2007 The 500 horse Whipple can be bought with full warranty I believe. I was getting 22 mpg avg and now 19 but I've changed wheels and the speedo is a little off so I'm thinking that may be the difference. 15 mpg I think SoCal has a lead foot :D as I said...... I am sure I would get better results if I didn't live in the concrete jungle of SoCal. Warranty, yes the Paxton basically voids the warranty to anything that the supercharger could effect. However, I had an issue with my supercharger and it was repaired under Shelby/Paxton warranty at a Ford dealership. Link to comment Share on other sites More sharing options...
fatboy_merged Posted December 21, 2007 Report Share Posted December 21, 2007 The 500 horse Whipple can be bought with full warranty I believe. I was getting 22 mpg avg and now 19 but I've changed wheels and the speedo is a little off so I'm thinking that may be the difference. 15 mpg I think SoCal has a lead foot :D who should i have install it? <bleep> i want the paxton but it voids my car warrantee i guess i have to remove the strutt brace <_< :angry: Link to comment Share on other sites More sharing options...
Strawman Posted December 21, 2007 Report Share Posted December 21, 2007 who should i have install it? <bleep> i want the paxton but it voids my car warrantee i guess i have to remove the strutt brace <_< :angry: With the Paxton the strut brace can stay, with the Whipple it must be removed. I believe pretty much any supercharger will void your powertrain warranty. I was told by FRPP that you would get a very limited 12 month warranty with the FRPP non-intercooled S/C, but any other S/C was arrivederci, baby. Link to comment Share on other sites More sharing options...
fatboy_merged Posted December 21, 2007 Report Share Posted December 21, 2007 i'll just wait till the car is out of warranty and if i do get a blower i'll just get the paxton. Can Ford install those or do i need to go to a mod shop authorized by Shelby to document it? ...why did i spell warranty with 2 ee's in an earlier post? :blink: :rolleyes: Link to comment Share on other sites More sharing options...
ShelbyPilot Posted December 22, 2007 Report Share Posted December 22, 2007 i'll just wait till the car is out of warranty and if i do get a blower i'll just get the paxton. Can Ford install those or do i need to go to a mod shop authorized by Shelby to document it? ...why did i spell warranty with 2 ee's in an earlier post? :blink: :rolleyes: You could have any qualified shop do the install. I think you would even be able to update the registry eventually. However, only SAI in Vegas and it's authorized mod shops (Tasca & the one in Dallas) can install the supercharger and give you the "/SC" stripe. If you care. Link to comment Share on other sites More sharing options...
LuLu Posted December 22, 2007 Report Share Posted December 22, 2007 You could have any qualified shop do the install. I think you would even be able to update the registry eventually. However, only SAI in Vegas and it's authorized mod shops (Tasca & the one in Dallas) can install the supercharger and give you the "/SC" stripe. If you care. All hope is not lost. If you need/want Shelby approval on your supercharger, the above statement is true, and you will retain your 3/36 warranty if the install is done by Shelby. However, any Ford Racing Ford dealership can make the same promise/deal, just not with the Shelby logo on it, and for about the same (if not less) coins. Local to me, is Anderson Ford, Rod Baker Ford, Sutton Ford, and Victor Ford. All of these dealerships will install the FRP (same as SAI) Whipple and Paxton kits, and provide extended warranty coverage as well. However, they will not underwrite any changes to the stock kits. This is the shortcoming here, that these kits will be installed with pulleys limited to 6-8 PSI boost, and this doesn't seem to satisify many folks here. But, IMHO it is a safe PSI that should not have much wear/tear affect on your stock 4.6L-3V engine as it produces phenominal power for our SGT. That's where you cross the warranty line, smaller pulley = more boost, which =s more power. However, it also means a greater likelyhood of engine and/or driveline failure. Cross that line, and you are on your own. Ahhh, what the Hell am I thinking. People fly around the world 24 hours a day and only a few of them fall out of the sky, when science says we can't fly at all! IMHO, your odds are about the same. If you don't fly, you'll never crash. BTW, in comparasion to what some here have spent on flashy wheels and matching tires, a fresh 4.6L-3V is pocket change. Peek here? http://www.karkraft.com/New%20Parts%201204.jpg Happy holidays, gents. Link to comment Share on other sites More sharing options...
fatboy_merged Posted December 22, 2007 Report Share Posted December 22, 2007 well i dont want alot of boost...just enough to make 400 hp or close to it. i'm sure that wont hurt the engine. i'll proby wait till after warranty anyway. seems like nothin goes wrong with anything till right after warranty expires. <_< kinda like ice makers in refridgerators. a month after warranty expires it quits workin. :angry: Link to comment Share on other sites More sharing options...
ShelbyPilot Posted December 24, 2007 Report Share Posted December 24, 2007 I checked the onbaord computer today for the gas mileage since I fueled last time. A little more then 3/4 of a tank ago. It said 17.5 MPG. That was a little bit better of a mix between freeway, surface streets, and full throttle blasts. Link to comment Share on other sites More sharing options...
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