IHRA:
T-Top = Convertible to them
http://www.ihra.com/news/2004/november/122...lebkupdates.htm
now NHRA rules
NHRA used to be 11.99 or faster now they dropped it down to 11.49 same as what IHRA is right now...
Strange world... strange world indeed
10.00 to 11.49
Rollcage: Add at the end of the section, A rollcage is mandatory on all convertibles running 10.99 or quicker ¼ or 6.99 or quicker 1/8 mile. T-top vehicles follow convertible guidelines.
11.50 to 13.49 section
Rollbar / Rollcage: A minimum of a 6 point roll bar is mandatory all convertibles and T –Top entries running 11.00 to 13.49 ¼ mile and 8.25 or quicker 1/8 mile. A roll cage is mandatory on any entry that exceeds 135 mph.
T-Top = Convertible to them
http://www.ihra.com/news/2004/november/122...lebkupdates.htm
now NHRA rules
http://www.nhra.com/2004/news/november/110102.htmlBeginning Jan. 1, 2005, a roll bar and an SFI 16.1 driver-restraint system will be mandatory on any vehicle running 11.49 or quicker and for convertibles running 13.49 or quicker. An SFI 3.2A/1 jacket will be mandatory for all drivers in vehicles running between 10.00 to 11.49 seconds. On any car running 11.49 or quicker, a flywheel and clutch meeting SFI Spec 1.1 or 1.2 and a flywheel shield meeting SFI Spec 6.1, 6.2, 6.3, or 9.1 will be mandatory. A driveshaft loop will be required on all cars running 13.99 or quicker and utilizing slicks, except vehicles equipped with street tires running 11.49 or slower.
NHRA used to be 11.99 or faster now they dropped it down to 11.49 same as what IHRA is right now...
Strange world... strange world indeed