We got dropped a note from the boys at FB Performance Transmissions letting us know that Brent Hajek decided to bolt in one of their Ford AO3 Stage-2 Transmissions in place of the venerable C-4 that was previously installed in one of his new Mustang Cobra Jet factory drag cars. Before you start thinking that they were sniffing glue, read the release and try to keep your jaw off the floor. We knew these cars had some serious snot, but from what these guys are talking about, even we were selling them short. Wowsers.
Here’s the release from FB Performance Transmissions:
Brent Hajek of Hajek Motorsports of Ames, Oklahoma owns quite a few of the latest Ford Cobra Jet Mustangs. In Feb this year, Brent contacted FB Performance Transmissions and Pro Torque Converters, because of concerns he had regarding the strength and durability of the existing C-4 transmissions being used in some of his race cars. No sooner did FB quote a replacement Pro Competition AO3 transmission when two of the C-4’s were already began having serious problems after only two events. After repeated repairs it was obvious that these units could not survive a long racing schedule.
FB then supplied Hajek Motorsports with an AO3 Stage-2 transmission and an 8” Full Race converter specifically built for Super Stock Class racing. Of course the naysayers, kept telling Brent that this highly modified AOD would never provide the same HP throughput as a built C-4. Well that notion was completely dispelled at the recent launch of the NHRA Lucas Oil Drag Racing Series at S.R.C.A.. Dragstrip in Great Bend, Kansas on April 25th.
On the first qualifying pass, Brent’s 3660 lb. Cobra Jet had a 1.32 60ft and went a 10.32 ET. off the foot brake. The car was operating at 5,000 feet of air, and the throttle position was not wide open. It was enough to make his car easily the No.1 Qualifier in the “A” Stock class. By comparison, the same type of car with a stick and greater thorttle opening position degrees could only manage a 1.42 60ft. and 10.60 ET. Quite a difference!
We’re not at liberty to reveal what the Cobra Jet turned during the test and tune passes, but Brent commented after the event that he believed that the car would go a 9.60 at sea level without a problem. This event only reinforced everyone’s beliefs that the AO3 transmission would not only out perform the C-4, but would last a heck of a lot longer.
More information about the AO3 transmission can be viewed here and here.
