Quote:
Originally Posted by gumby79
Most "H" or fasters speed rated tires eather have no load capacity or are 28" or smaller or10-30"wide drag rears.
To day I've found some options
32.18"D 235/55r22 (104w) 1984lbs 168mph $154 usd
31.41"D 275/25r26 (98w) 1653lbs 168mph $215 sud
30.04"D 255/50R20 (109Y) 2271lbs 186mph
B stock rpm +.20 od + 3.08 gear swap.
C as above + 3500 gov spring.
Now comes the question witch one will have the best coefficient of rolling resistance?
What effect will the different wheel sizes have?
Options 1 is 140.5 good for 130club +150club rated
option 2 is 137. 2mph@100% transfer of rpm. (The 518 non lockup torque converter has demonstrated a 5% loss of RPM)
Option 3 131.2mph this option will requires the 3500rp. Gov spring for the 130 club . And will be useable allthe way to 175 + to qualify for the long course. |
I'm unsure about the effect of rolling resistance.
When I ran,a 147-mph Mini Cooper would only do 129-mph because of damp salt track conditions.
136-mph Mazda-3s could only do 118-mph.
The efficiency of the tires may be essentially destroyed if you have any rain.
Question,if you do 130,will they let you turn around and run the 2-mile 150 course? With only 2-miles to hit 150,you might have to gear it for just over 150 and hope to hit it.
If so,you'd know a lot more about her performance under real track conditions,which would help you sort out gearing for the final assault.
Are there any online computers for top speed at a given set of parameters?