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Old 07-25-2021   #1
aafc
 
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Join Date: Feb 2010
Location: Ochlocknee, GA
Posts: 435
Default Test and Tune at Gainesville drag strip

After I had my headers modified so I could remove transmission without removing the headers to have the torque converter made looser (higher rpm for launch) off the foot brake. Went to Gainesville raceway for test & tune ( only
open for drag radials and slicks) NO STREET TIRES! I was able to make 3 runs
about every 30-40 min between runs. Temp 94+ deg ,they did drag the track
prior to making runs.
Before I had the converter made looser I could only launch at 1800-1900 rpm.
with the looser converter I started out leaving at 2300 rpm first pass.

Each run tires were set at front 40lbs, rear set at 18lbs

Run 1
LEAVING @ 2300 RPM R/T .157 - 60FT 1.642 -330 4.848 1/8 7.527 @
91.00MPH 1/4 11.891 @111.70

Run 2
LEAVING @ 2500 RPM R/T .037 - 60FT 1.606 - 330' 4.788 - 1/8 7.458 @
91.14 - 1/4 11.849 @ 105.47

Run 3
Leaving @ 2700 rpm R/T .080 - 60FT 1.628 - 330' 4.814 1/8 7.489@
90.58 1/4 11.858 @ 112.01 ( TRACK GOING AWAY SPUN)

Run 4
Leaving @ 2700 spun real bad abort run I even tried dropping rear tires to
17lbs
No sense beaten car up if I'm losing traction. So I set the tires for the
drive home.
Well i found that I can leave at a higher rpm off the foot brake, just need
more seat time in the car.
Next test and tune (NO STREET TIRES) AUG 14th ORLANDO SPEED
WORLD
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