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1/4 times sound low?????

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Old 07-25-2003 | 01:15 PM
SvtLightning02's Avatar
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From: Liberty Twp, OH
1/4 times sound low?????
Just got back from the track. The best time I could pull was a 13.018 @ 105 with a 60 ft of 1.936.
My mods are a 6 # pulley, chip & fast air kit.
I was hoping for some 12.8 or 12.9's. Whats your opinion.
 
Last edited by SvtLightning02; 07-25-2003 at 01:20 PM.
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Old 07-25-2003 | 01:17 PM
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Was it REALLY hot................humid?? That'll do it to ya.............all summer long. Your 12.9 MIGHT be attainable in the heat if your 60' was in the 1.8 range..................Don't be concerned about the times too much................these trucks HATE heat

JC
 
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Old 07-25-2003 | 01:20 PM
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It was in the mid 80's not sure exact humidity but didn't seem that bad
 
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Old 07-25-2003 | 01:31 PM
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Seems kind of low, but the heat, baro, and humidity play a HUGE role in the performance of these trucks. Get to a dyno and get a printout for your tuner with the a/f ratios.
 
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Old 07-25-2003 | 01:33 PM
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Working on the dyno bit tried to go yesterday but when I got there it turned out there dyno was broke so I'll hafta go sometime this weekend
 
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Old 07-25-2003 | 03:40 PM
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Referencing this thread: Is the heat that BAD on these trucks?

Forced induction motors lose about 2% of their power for every 10-degree increase in ambient temperature. Normally aspirated motors only lose about 1%.

The best race weather for our trucks is:

50 - 60 degrees ambient temperature
Barometric Pressure over 30 in.
Humidity below 75%

Ambient temperature and power are indirectly proportional. Ambient temperature and traction are directly proportional.
--Steele
 
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