1968mustang Posted December 31, 2007 Report Share Posted December 31, 2007 This is a tough decision for me. I have looked at the tunes, but as most of us are, it is the horspower we love. Is the 4.6 able to handle the strain of the supercharger? Will the bottom end hold up. I know it would seem with SAIC offering them, this has been checked out, but does this shorten engine life? I use my SGT as a daily driver and love it. Is going to a SC too much to do on a daily driver. I just don't have the answers and hope some of you have experience with this. Any help would be appreciated. Link to comment Share on other sites More sharing options...
SLB8SNK Posted December 31, 2007 Report Share Posted December 31, 2007 Wow, sounds cool. I hate to say it, but after all that cost, is it worth it? Or can you trade up to a GT500? Not sure what makes the most sense dollar wise, but if you are stuck on keeping the SGT.... sounds cool! Link to comment Share on other sites More sharing options...
Son of GT Posted December 31, 2007 Report Share Posted December 31, 2007 Do it. You won't regret it. Keep the boost down at the factory default pressure and you won't have any lower end issues. If there were inherent problems with supercharging the 4.6 then FRPP wouldn't offer a limited warranty with it. Fantastic performance return for your investment, however the one drawback (other than reduced fuel economy) is that you'll want (should) to replace your stock brakes because they will become woefully inadquate for the added H.P. Of course new brakes mean new wheels and tires, so you can see that it becomes a slippery slope once you start the mod process. Link to comment Share on other sites More sharing options...
twobjshelbys Posted December 31, 2007 Report Share Posted December 31, 2007 Hi, I'm getting two 2008 Barrett-Jackson convertibles - one auto and one 5-speed. I intend to drive the auto. Can a supercharger be added to the automatic? Can the transmission handle it? I see in the catalog there is a rear-end changeout too. Which S/C is recommended? Does it affect the Ford base warranty? Cheers, Tony Link to comment Share on other sites More sharing options...
moabman Posted December 31, 2007 Report Share Posted December 31, 2007 Look in this months Muscle Mustangs & Fast Fords. JDM Engineering has a 05 Mustang that is running in the 9's with a stock 5R555 automatic transmission. Jim D'Amore claims that the transmission can handle these loads IF you control the pressures and shift speeds at certain shifts. The fact that he is running in the 9's with the transmission in stock form after 3 years of track use makes me believe him. The same car is stroked 289 vs the stock 281 in^3 and has a stronger bottom end but that is to handle the 14 psi boost that the modified (pulley swap) Saleen supercharger is putting out. If you stay in the 10 psi boost range, the stock bottom end should be fine especially if you use it for steet driving. Link to comment Share on other sites More sharing options...
Son of GT Posted December 31, 2007 Report Share Posted December 31, 2007 My SGTSC is an automatic, and it handles the extra H.P. like a champ. Crisp shifts that chirp the tires, and the car is as quick as whip. The only issue with supercharging an automatic transmission equipped car is something that SAI made clear to me when I picked it up from them. The SC mod package also includes a Diablo tune that's designed to hold the automatic's shift points back under heavy throttle (WOT) in order to allow the blower to get up to maximum boost pressure before the up shift occurs. Well, as a result of the delayed up shift during WOT, the engine's rev limiter comes on before the up shift happens. But it's really no big deal and easly resolved because the rev limiter shuts off instantly at the same moment the upshift occurs, or you can prevent it from coming on at all by either manually shifting the car through the gears, or just by backing your foot off of the throttle so the trans shifts up on it's own. Link to comment Share on other sites More sharing options...
twobjshelbys Posted December 31, 2007 Report Share Posted December 31, 2007 Will it do strange things in uphill (mountain) driving? My other vehicles can get into "shift wars" when going uphill - disabling the overdrive usually takes care of it. Would the supercharger affect this? Link to comment Share on other sites More sharing options...
moabman Posted December 31, 2007 Report Share Posted December 31, 2007 Jim said the 2-3rd shift was the critical shift because the 5R555S is shifting to a second clutch as well as bands at this shift. He said you can control the transmission oil pressure and shift speed to allow the transmission to keep up. You notice I said "he said" because to me, transmission is a French word that means - Do not touch That's ironic because I think our transmissions are made in France. Like I said earlier, I believe Jim because he has been running a stock 5R555S on his drag car for 3 years now and putting much more pressure on it than I ever will. Link to comment Share on other sites More sharing options...
Son of GT Posted January 1, 2008 Report Share Posted January 1, 2008 Will it do strange things in uphill (mountain) driving? My other vehicles can get into "shift wars" when going uphill - disabling the overdrive usually takes care of it. Would the supercharger affect this? No "gear hunting" issues what so ever. Going up a grade or just regular city driving, the transmission works beautfully with the SC. It really turned to out to be a really great combination, and the other cool thing is that there is a company who is now making a paddle shifter system for the car/transmission that allows you to either shift the trans manually with the paddles on the steering wheel, or you can just put it in drive and let it do all the work. It would be great if there was some way that you could take a ride in my car just so you could see how great the system really works. Link to comment Share on other sites More sharing options...
Torrence Posted January 1, 2008 Report Share Posted January 1, 2008 The automatics can handle the s/c. It's all in the tune. Making the decision to S/C was one of the best decisions I could of made as far as performance. You really can't ask for anything more, INSTANT POWER is always a nice option to have. Link to comment Share on other sites More sharing options...
stormeaston Posted January 2, 2008 Report Share Posted January 2, 2008 Just do it man...I'm gonna! I plan on a Paxton SC this spring! Link to comment Share on other sites More sharing options...
stormeaston Posted January 2, 2008 Report Share Posted January 2, 2008 Just do it man...I'm gonna! I plan on a Paxton SC this spring! oooops! Link to comment Share on other sites More sharing options...
twobjshelbys Posted January 2, 2008 Report Share Posted January 2, 2008 So why the Paxton over the Ford Racing/Whipple? (Except that it won't fit the automatic.) Link to comment Share on other sites More sharing options...
twobjshelbys Posted January 2, 2008 Report Share Posted January 2, 2008 No "gear hunting" issues what so ever. Going up a grade or just regular city driving, the transmission works beautfully with the SC. It really turned to out to be a really great combination, and the other cool thing is that there is a company who is now making a paddle shifter system for the car/transmission that allows you to either shift the trans manually with the paddles on the steering wheel, or you can just put it in drive and let it do all the work. It would be great if there was some way that you could take a ride in my car just so you could see how great the system really works. Hey Son of GT: In the other S/C topic in the GT forum (here: http://www.stangsunleashed.com/forums/inde...t&p=285670) I was referred to a topic of yours that I couldn't find - could you point to it please? Thanks! Link to comment Share on other sites More sharing options...
n20civicb18 Posted January 2, 2008 Report Share Posted January 2, 2008 IMO: The Ford Racing Intercooled kit is probably the best bolt on kit available. The Paxton makes nice numbers and is easy to install but the Ford racing kit is nicer IMO and has ALOT more usable power. I have installed and drove both kits many of times and I truly feel the Ford Racing Intercooled kit is the best. Link to comment Share on other sites More sharing options...
twobjshelbys Posted January 2, 2008 Report Share Posted January 2, 2008 IMO:The Ford Racing Intercooled kit is probably the best bolt on kit available. The Paxton makes nice numbers and is easy to install but the Ford racing kit is nicer IMO and has ALOT more usable power. I have installed and drove both kits many of times and I truly feel the Ford Racing Intercooled kit is the best. Thanks! But the Ford Intercooled kit isn't automatic trans compatible. So if I do the 5-speed I'll look at both again. Link to comment Share on other sites More sharing options...
Torrence Posted January 2, 2008 Report Share Posted January 2, 2008 Thanks! But the Ford Intercooled kit isn't automatic trans compatible. So if I do the 5-speed I'll look at both again. I have an Automatic SGT and have a HO Whipple kit @ 10psi and have had no problems. Have have put 1600 miles on the car with the s/c. Loads of fun. This was a concern to me as well, your tuner just has to change the shift points when tuning or you would definetly have problems. Don't let what you have heard scare you...... If you have a tuner that knows what they are doing the Whipple and an Automatic should not be a problem. Link to comment Share on other sites More sharing options...
twobjshelbys Posted January 2, 2008 Report Share Posted January 2, 2008 I have an Automatic SGT and have a HO Whipple kit @ 10psi and have had no problems. Have have put 1600 miles on the car with the s/c. Loads of fun. This was a concern to me as well, your tuner just has to change the shift points when tuning or you would definetly have problems. Don't let what you have heard scare you...... If you have a tuner that knows what they are doing the Whipple and an Automatic should not be a problem. I'm just going from the Shelby Parts Catalog that says the FRPP intercooled supercharger is for manual transmission only... I'm waiting for an answer back from Shelby about what the rules really are. Link to comment Share on other sites More sharing options...
Torrence Posted January 2, 2008 Report Share Posted January 2, 2008 I'm just going from the Shelby Parts Catalog that says the FRPP intercooled supercharger is for manual transmission only... I'm waiting for an answer back from Shelby about what the rules really are. Also JDM put an HO Whipple kit in their 05+ Automatic a couple issues ago in either 5.0 and MM&FF and said the shift points are what is crucial to having the Whipple in an Automatic. I had mine installed at CJ Pony Parts and SGS Automotive tuned the car. Call CJ's and or JDM to get some more answers. My car is featured on the CJ's website under installation. I am at 458rwhp. Link to comment Share on other sites More sharing options...
Son of GT Posted January 3, 2008 Report Share Posted January 3, 2008 Hey Son of GT: In the other S/C topic in the GT forum (here: http://www.stangsunleashed.com/forums/inde...t&p=285670) I was referred to a topic of yours that I couldn't find - could you point to it please? Thanks! Yes, the additional comments that I made regarding the SC in front of an automatic transmission are in the begining of this forum. But the bottom line is that I SWEAR AND PROMISE TO YOU ON MY HONOR THAT ADDING A SC, ANY SC TO YOUR AUTOMATIC TRANSMISSIONED SGT WILL NOT GIVE YOU ANY DRIVABILITY PROBLEMS OTHER THAN RUNNING OUT OF FUEL MORE FREQUENTLY AND PERHAPS GETTING MORE SPEEDING TICKETS. I have no reason to lie to you. I love my GT500, and I love my automatic transmission equipped SGTSC. Now for goodness sake get off the fence and get your car booked into a Shelby mod center closest to you! Link to comment Share on other sites More sharing options...
moabman Posted January 3, 2008 Report Share Posted January 3, 2008 My brother-in-law has the Whipple big boost kit on his GT with the 5R555 automatic and it works fine. I love the Whipple but went with the Saleen on my automatic GT. I bought it from JDM and I as I mentioned earlier in this thread, Jim is great at programming the transmission on these cars and I am confident that the transmission will handle it the boost. I will be running 8-10 psi boost and should be making more than 400 HP at the wheels. The Saleen is a Lysholm twin screw and is very similar to the Whipple (the rotors may be extremely similar). I chose the Saleen because mine is a regular GT and I got a great price but if I had a Shelby GT, I would not hesitate to put the Whipple on. Link to comment Share on other sites More sharing options...
Revans310 Posted January 3, 2008 Report Share Posted January 3, 2008 I like the look of the Saleen Supercharger and you can still use the cold air intake...maybe shave the Saleen letters off the Top and have it powder coated Black and Joe from Chicane makes a Sweet tower brace for it. http://www.chicanesport.com/products/detai...ault.aspx?id=12 Link to comment Share on other sites More sharing options...
twobjshelbys Posted January 3, 2008 Report Share Posted January 3, 2008 Yes, the additional comments that I made regarding the SC in front of an automatic transmission are in the begining of this forum. But the bottom line is that I SWEAR AND PROMISE TO YOU ON MY HONOR THAT ADDING A SC, ANY SC TO YOUR AUTOMATIC TRANSMISSIONED SGT WILL NOT GIVE YOU ANY DRIVABILITY PROBLEMS OTHER THAN RUNNING OUT OF FUEL MORE FREQUENTLY AND PERHAPS GETTING MORE SPEEDING TICKETS. I have no reason to lie to you. I love my GT500, and I love my automatic transmission equipped SGTSC. Now for goodness sake get off the fence and get your car booked into a Shelby mod center closest to you! I was never on the fence except for which one. If the FRPP/Whipple will work I think it gets my vote otherwise the Paxton is it. Thanks for all the help! Link to comment Share on other sites More sharing options...
twobjshelbys Posted January 3, 2008 Report Share Posted January 3, 2008 Yes, the additional comments that I made regarding the SC in front of an automatic transmission are in the begining of this forum. But the bottom line is that I SWEAR AND PROMISE TO YOU ON MY HONOR THAT ADDING A SC, ANY SC TO YOUR AUTOMATIC TRANSMISSIONED SGT WILL NOT GIVE YOU ANY DRIVABILITY PROBLEMS OTHER THAN RUNNING OUT OF FUEL MORE FREQUENTLY AND PERHAPS GETTING MORE SPEEDING TICKETS. I have no reason to lie to you. I love my GT500, and I love my automatic transmission equipped SGTSC. Now for goodness sake get off the fence and get your car booked into a Shelby mod center closest to you! Also, about putting bigger brakes... I saw that and said, but who's going to stop? Link to comment Share on other sites More sharing options...
moabman Posted January 3, 2008 Report Share Posted January 3, 2008 I like the look of the Saleen Supercharger and you can still use the cold air intake...maybe shave the Saleen letters off the Top and have it powder coated Black and Joe from Chicane makes a Sweet tower brace for it. http://www.chicanesport.com/products/detai...ault.aspx?id=12 Sweet! between the snorkle and intercooler - nice design. I think the Whipple is a little lighter - it was a tough decision but I don't think there were any bad choices. Link to comment Share on other sites More sharing options...
Torrence Posted January 3, 2008 Report Share Posted January 3, 2008 Maybe this will help make up your mind! Link to comment Share on other sites More sharing options...
shelbyguy470 Posted January 3, 2008 Report Share Posted January 3, 2008 I went through the same questions... The bottom line. I dropped my SGT off to Bud at SAI yesterday to have the Paxton and gauge cluster installed. Apparently they are having trouble getting the S/C settings for the 2008s, so he said they will be starting on mine today. Link to comment Share on other sites More sharing options...
bubbabow Posted January 3, 2008 Report Share Posted January 3, 2008 I went through the same questions... The bottom line. I dropped my SGT off to Bud at SAI yesterday to have the Paxton and gauge cluster installed. Apparently they are having trouble getting the S/C settings for the 2008s, so he said they will be starting on mine today. I have an 08 also if you do not mind what was his out the door price for the two items and what makes the settings different from the 07s Link to comment Share on other sites More sharing options...
twobjshelbys Posted January 4, 2008 Report Share Posted January 4, 2008 So the word from Bud is that the GT will support only the Paxton with the automatic and they won't put the FRPP/Whipple on. Gotta go with their advice. I'm trying to intercept it so it can be added before it leaves Vegas but I'm going to get it. It's definitely on the list. Now for gauges. The Shelby package fits in the middle of the dash (with super sticky tape so no holes) and is inobtrusive. The ones in the other picture were on the window post but looked like they might be a distraction from peripheral vision. I've never done these before so pictures of various installations would be helpful. Link to comment Share on other sites More sharing options...
MoTheDigitalDiva Posted January 4, 2008 Report Share Posted January 4, 2008 Will it do strange things in uphill (mountain) driving? My other vehicles can get into "shift wars" when going uphill - disabling the overdrive usually takes care of it. Would the supercharger affect this? Hi Tony, Did you ask Bud about the gear "shift wars" with the auto SGT SC at high altitudes? I live in Denver and drive my subaru automatic on I-70 btw Vail and Denver all the time and know exactly what you're talking about. I noticed everybody that answered you here were pretty much flatlanders. Driving above 5280 ft changes things alot! On a side note, hope to see you in Steamboat this summer at the mustang roundup with at least one of your two bj's! Link to comment Share on other sites More sharing options...
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