The Doc 2004 Ford SVT Cobra – The Daily Beast
Wow, what can not be said about Ken AKA ?The Doc?s? 2003 Cobra. Starting life stock as any other Cobra did, Ken quickly decided that it was not enough for his daily grind getting to and from his practice. The Car was quickly transformed into a road terror. The Cobra received Bassani long tubes, catted X-pipe, and catback, a JLT cold air intake, 60# injectors, Twin Ford GT fuel pumps and a Ford Racing Whipple set to 19 psi. Other than that, the car was stock. This satisfied the docs hunger for only a short time. Enter Precision Autosports. After Talking to owner Jeff, Ken decided he wanted to, ?go big or go home? and ordered a Turbo Horsepower Twin kit with 57mm Turbos! When Ken dropped off the car, we made a baseline with the Whipple on the car, to see what we were playing with. The car made 625 RWHP on 19psi!!! Remember folks, this is his daily driver, and 625 RWHP was not enough for him!! Car was dropped off in Early January and since Ken?s daily driver was to be down for a few months, he was forced to drive his 97 Porsche 996 in the snow. That was all right, it does have AWD after all!
When Kens Turbo kit arrived, we quickly realized what we had in store for us. The complete kit came not only with the twin turbo setup, but also with a HAL K-Member, coilovers and a Sullivan Intake. Work started with the removal of the K-member, headers and the X-pipe, it was decided by Ken that he would be re-using the Bassani catback. With the K-member out of the way, we installed most of the hotside including the turbos. Unfortunately, there were many things in our way that would require us to re-locate them, or have them header wrapped. Once this was all complete, the new K-member and front suspension was put into place. We then turned out attention to the top of the motor, where the Whipple and the factory heat exchanged were pulled from is resting place in the middle of the motor. The Sullivan was then bolted down along with the supplied High flow fuel rails and the same 60# injectors. At this point, the kit was partially incomplete. There was no way to hook up the returnless line to the rails, and there was no place to mount the fuel rail pressure sensor. Lucky for us, Precision is right next to a metal fabrication shop. Using our new patented conversion kit, the fuel system was now complete. We now removed the front fascia and installed the Intercooler and got all the cold side plumbing done. With the finishing touches finally becoming complete, Jeff installed a SCT chip and a PMAS 95mm MAF and started the Cobra. One final part to point out, at this point, the car still sports the stock, long block, cams, transmission, clutch, rear end.
Over 110 hours later, we moved the car about 6 feet over to our in house dynojet. Now began the over 40 dyno pulls to get the pump gas tune complete. After got the idle part of the tune perfect, we began to see what she would do. On just 9 psi, we made 598 RWHP, but now came to a point where we needed a Boost controller. Ken procured us a HKS electronic boost controller. A few days later, we were back at it again. This time, after a full base pulls, we saw 735/690 on 16 psi!! This was still on straight 93 pump gas and was also 100 more horsepower than the Whipple, and on 3 less pounds of boost to boot as well. We did notice that back pressure from the exhaust was causing a restriction, as on that pull, it blew half of the catback off the car! We would later install Cutouts, but this car was as quiet as a stock Cobra. If you pulled up next to it at a light, you would NOT be able to tell it made 735 RWHP. A few weeks later, the stock clutch was showing signs that is was not able to take any more abuse. So out it came and in went a Twin Disc McCloud. Car has been awesome every since. We took the car to WF9 in St. Louis where Turbo Horsepower owners could not believe what an awesome car that we built. They made us an official installer of their kits. There were a few pictures taken of the car, these are curtsy of 1320video.com
Now all we needed was a dry day to take it to the track?..
Five weeks later, that day finally arrived on 6-11 as the Dayton F-Body was having a track rental day sponsored in part by Precision. We decided that this would be the perfect day (Although, it really was not) to test out Kens wild creation. All passes this day were driven by Jeff as Ken was at work. First pas with an easy launch showed how powerless the 315/40/17 Drag Radials were to stop wheel spin in first and second gear. Jeff still mustered a 12.20@130. A few more careful launchs finally got Jeff in the 11?s with a 11.63@133. This car really needs a two-step to help it build boost off the line. On Jeff?s last pass, he was able to get an 11.45@134! All passes were on pump 93. And we still have not even turned up the boost on race gas.
Well, the time has finally come to see what this car would do on race gas (110 leaded). After pretty much draining the tank from the previous weeks track day (less than 1 gallon of 93 in the tank) we added in 5 gallons of 110, and began to see what it would do. With ZERO changes to the tune, and cranking the boost to 22 psi, the car saw an unbelievable 843 RWHP / 730 ft. torque!! We just a minor change to the tune, and adding 1 more psi, we saw 853/750, that is around 980 to the flywheel!!! And this car is still a 100% stock engine!! Unbelievable, this car is now one of the most powerful 2003 Cobras in the country and it is Kens Dailey driver! We have however; found the limits of the 60# injectors, as the tune was starting to drift lean a little. So the car was backed off to 22 psi for its race gas tune. Now get this, Ken, is still not satisfied and has just ordered the Twin 61 mm turbo upgrades for this car! Can you say 1000 RWHP is next?
At the end of 2006 we put the car on the dyno for our 1 year anniversary dyno day. Playing with the tune a little, we got the car to make 805 RWHP on pump 93 gas. Spraying the intercooler with nitrous, netted us 905 RWHP still on pump 93 gas. The car is still completely stock save the turbo kit, Catback and a clutch.
Video of the car can be found here: