Originally posted by Mikie2001GT
Syphon It may be that you have not witnessed this because of your location ?
Yes it is true I have not seen what 4.6L can do at sea level. But let me go off of what I have witnessed at my local track which is 5843 feet above sea level. Stock 99+ GT run between 15.2-15.4 stock for manuals and 15.7-16.0 stock for AODE.
My GT ran a 15.3 stock. From adding 3.73 gears, K&N, FMS pulleys, and flowmasters I dropped it to a 14.8, then I added a custom x-pipe and replaced the flows with some magnaflows and run consistant 14.6's.
Out of the 5 speed 99+ GT's I have seen at my track:
-2001 GT with MAC Prochamber, MAC Cat-back, and MAC CAI ran a 15.1, he then lowered it to a 14.7 with 3.73's and short shifter.
-1999 GT with only a MAC off-road h-pipe and K&N ran a 14.9(All driver on this one).
-2000 GT with a K&N run's a 15.3
-2001 GT with tri-ax run's a 15.4
-2001 N/A Saleen S281 with off-road x, 3.73's, and tri-ax runs a 14.8
2000 Roush Stage 2 GT with 3.73's, and off-road H runs a 14.7
-2001 Bullit GT ran a 14.9 while spinning through 1st gear, he was totally stock.
-1999 GT run's a 14.5 with off-road H, Flows, 3.73's, pulleys, K&N, drag radials, tri-ax, 70mm t-body, and long tube headers.
That's just few of the people I know and seen at the track.
Altitde isn't very friendly for racing. N/A cars have a hard time getting the times up here. The sad thing is 2nd Gen Talon Tsi's and Eclipse GSX's and GS-T run between 14.9-15.4 stock up here. That's what they run at sea level basically. Turbo cars don't really lose much power at altitude. S/C cars lose more but not as much as N/A.
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