Re: 1/8 mile vs 1/4 mile ET
An old buddy of mine, Steve Lothridge, has been working on this.
Try it out. Steve would like feedback on how it differs from your actual results, and he will tweak the formulas when he gets enough feedback.
I helped Steve with the data he used initially. We looked at NHRA records, and MOST of the cars had a 1/8 to 1/4 ratios that varied between 1.55 and 1.61. Baiscally, some cars launch soft and finish hard, others launch hard then taper off, and the rest fall in the middle.
65 F5 Cobra, 5.0, t-5, 12.5 @106
'69 Falcon Wagon, 427W, 4R70W, 483rwhp, pump gas Best 1/4: 11.180 @ 121.7 (7.14 1/8-mile, at 3970#); Best 1/8 7.03 @ 98 (Feb. 2010 issue of Popular HotRodding, pp.32-37)
Last edited by L n L; 01-18-2010 at 08:43 AM.