.1 faster in the 1/4 sorry who ever says it did that I think that they might be mistaken. Its all most impossible to say a mod knocked off .1 because .1 can be a factor of driver and weather.
I see your point very much and it's actually one I made to the person who posted about his claimed .1 knock off with pulleys. He said he went to the track and ran 14.6x's consistently with a bone stock SN95, that same day he had pulleys installed and lined it up again and ran 14.5x's consistently so I don't know. He never said what hundredth of a second so it could of just been .01-.05 or something lol.
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2003 Mustang GT Fobra, Sonic Blue 4R70W 262rwhp/280rwtq - Mods in profile Vortech coming soon.....
Daily Driver 2001 Mustang V6, Oxford White 4R70W
Mods in profile
.1 faster in the 1/4 sorry who ever says it did that I think that they might be mistaken. Its all most impossible to say a mod knocked off .1 because .1 can be a factor of driver and weather.
Unless you are getting a 13.2 with EVERY run and then bolt them on and only pull 13.1's then I will believe it but the only cars that I have seen that consistent in the 1/4 are modded way beyond a UDP.
I personally think they are a waste. If you plan on staying N/A and have done every single mod you can do and have some money burning in your pocket then ok.
I'm getting mixed reviews here hard to decide, but my thinking is pulleys wouldn't have much effect on a 300 hp engine, after all it only used 3 hp on a whimpy saturn engine.
Call me stupid but I am still new to this site, what do you mean by N/A.
There are to many good mods out there that I think sit a little higher on the mod chain then UDP's
I talked to a friend of mine and he told me not to waste my money. He said they have had somthing to do with oil pump failures on the 3v cars. Anyone have a similar problem yet that had underdrives?
I talked to a friend of mine and he told me not to waste my money. He said they have had somthing to do with oil pump failures on the 3v cars. Anyone have a similar problem yet that had underdrives?
Absolutely untrue. There is no correlation as to how fast you are turning your accessories and your oil pump.
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07 GT premium in Grabber Orange. 5spd. manual w/IUP, plenum cover,3.55's, Roush scoop, 14" antenna, C&L CAI, Bamachips 93 Predator tune, Steeda U/D pulleys, Hurst shifter, FRPP GTA's, CDC chin spoiler, CHE LCA, BMR panhard bar, Eibach Pro Kit. FRPP 17" black bullitts and 255R45 Firestones, Spydershaft aluminum driveshaft, MSD coils, D-Specs, Prothane motor mounts, BMR LCA brace, Steeda panhard brace, BMR adj. UCA, Webelectric sequentials, Mikronited FRPP 4.10's.
I see your point very much and it's actually one I made to the person who posted about his claimed .1 knock off with pulleys. He said he went to the track and ran 14.6x's consistently with a bone stock SN95, that same day he had pulleys installed and lined it up again and ran 14.5x's consistently so I don't know. He never said what hundredth of a second so it could of just been .01-.05 or something lol.
The keyword here is that the SN95 is a pushrod actuated OHV engine and there was measurable gain by using underdrive pulleys at the crank, water pump and alternator. These gains did not transfer over when Ford moved to the 4.6L OHC (overhead cam) which is a much more efficient engine design. So while there might be some gain in underdrive pulleys, IMHO not enough to warrant the cost.
EDIT: I do believe, though, that there are definite gains when you remove the waterpump from the system by installing an electric water pump (Meziere).
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2006 Redfire GT manual. Saleen S/C. Custom Diablo tune by Adam @ ST Motorsports, San Bernardino, CA.
While the OHC design in itself is more efficient, the accessories, ie. water pump, alternator, p.s., and a/c are basicly the same and have a similar amount of parasitic drag. The fact that an engine is OHC versus pushrod, has no bearing on how much drag the accessories have.
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07 GT premium in Grabber Orange. 5spd. manual w/IUP, plenum cover,3.55's, Roush scoop, 14" antenna, C&L CAI, Bamachips 93 Predator tune, Steeda U/D pulleys, Hurst shifter, FRPP GTA's, CDC chin spoiler, CHE LCA, BMR panhard bar, Eibach Pro Kit. FRPP 17" black bullitts and 255R45 Firestones, Spydershaft aluminum driveshaft, MSD coils, D-Specs, Prothane motor mounts, BMR LCA brace, Steeda panhard brace, BMR adj. UCA, Webelectric sequentials, Mikronited FRPP 4.10's.
This is what I read on BMC forum, It makes sense to me.
it was a more useful mod on the 5.0s
Ford basically set up the 4.6 cars with pulleys that maximized horsepower while driving the accessories just enough. So if you underdrive the accessories much more, they won't actually be able to do their jobs
This is what I read on BMC forum, It makes sense to me.
it was a more useful mod on the 5.0s
Ford basically set up the 4.6 cars with pulleys that maximized horsepower while driving the accessories just enough. So if you underdrive the accessories much more, they won't actually be able to do their jobs
Ford never does anything to maximize horsepower. They do things to maximize fuel economy and emissions..
The keyword here is that the SN95 is a pushrod actuated OHV engine and there was measurable gain by using underdrive pulleys at the crank, water pump and alternator. These gains did not transfer over when Ford moved to the 4.6L OHC (overhead cam) which is a much more efficient engine design. So while there might be some gain in underdrive pulleys, IMHO not enough to warrant the cost.
EDIT: I do believe, though, that there are definite gains when you remove the waterpump from the system by installing an electric water pump (Meziere).
I thought that the last pushrod SN95 was that 95, arnt 96 to 04 SN95's all Modular.
I agree that the engine has come along way sense the 5.0.
There are many mods that you NEED for a 5.0 that you just do not need with the S197. Could that be a reason why we have not seen many mods for after market Intake Manifolds? Also why so many people prefer to run stock cam's in there S197 over after market. I know I have no desire to swap my cams. Until it gets to the point were I cant make any more power then sure but until then for me there is no better supplement for power then boost and the stock cams seem to be just as effecient.
Just as the UDP's for the price of a UDP and the time it would cost to install I could of went to a bar picked up a girl, bought some drinks and had more fun doing that then I would with UDP's hahah Thats my motorboating face
I personally think they are a waste. If you plan on staying N/A and have done every single mod you can do and have some money burning in your pocket then ok.
It takes 15rwhp to even feel a change in your car. I dont understand how any of you can say you feel a difference?
I disagree. This is one of the easiest ways to free up 5-10 hp. I noticed the difference with my 5-speed. But with an auto, you may not notice it. And I don't know what some ppl are paying, but I got my Steeda pulley for $170, installed it myself in about 2 hrs (because the crank bolt was a SOB!).
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When my buddy Mike installed his it made NO difference in his car and he still could not beat my car when I was N/A with the same bolt ons. Only difference in cars was he had a Steeda CAI and I had Tunable Inductions.
So, what's your point? Every car is different. Maybe you are a faster throw than your buddy.
I talked to a friend of mine and he told me not to waste my money. He said they have had somthing to do with oil pump failures on the 3v cars. Anyone have a similar problem yet that had underdrives?
I hate to say it but your friend doesn't have a clue what he's talking about.
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07 REDFIRE GT 5 SPEED 3.55 gears
C&L Racer CAI XCAL2/Seq signals/GTAs/Steeda UDP/CHE K Member Brace W/Torq Links/J&M LCA/Spider DS/PRO.50 Shifter Hurst handle & "T"/Meziere EO2/ARH LT catted H /Prothane MM/Delet Plates/SLP BOSS 429 Scoop/Accel COP/PowerSlot/Hawk Pads/Tokico D-Spec/CHE Panhard Bar Brace/Steeda Adj. Panhard Bar/BMR F/R Sway Bars/Cervini ducktail spoiler/BMR UCA Mount/CHE UCA/GT\CS Rear Cover/AMChrome Bullets 18x9/10s/Nitto 255/45&295/45
Tillman Dyno Tune 307HP/322TQ
and the stock cams seem to be just as effecient. 
Thats my motorboating face
