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      04-10-2022, 12:26 PM   #389
onfireX5
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Drives: F90M5,F85X5M
Join Date: Jul 2015
Location: Va

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I've raced for 46 years on NHRA, IHRA and non sanctioned tracks.Never on one that was perfectly level in elevation. The NHRA spec to be certified as an NHRA track, and must be proven with an engineer level, etc process is +1% to -1%. Within that range , NHRA will cert the track. Bristol, for example is almost +1% uphill. Rockingham is down less than 1. After slope, proceed to the accuracy of the track testing equipment and more importantly , set up location. Some have more rollout than others to give better ET's . Some move the timing beams a bit to shorten the track. One track I unloaded at, I knew something was wrong with my car. It was running 0.30 quicker and 5mph slower off the trailer. That big of a jump worried me and I started to load back up. Track starter came over ....discussion....oh, we have the end beams moved in for this race....track is shorter....so, it's all relative . Some tracks go downhill and back uphill...
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