This is topic i need help! in forum Tech Talk at Northern California Ford Owners .
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Posted by 1990GT50 (Member # 2119) on
:
how do you get a roll bar/cage certified for a certain ET? i have seen people with 6pt roll bars they say are legal to 9.99 and others say that they're only legal to 10.99 etc... How do you know?
Posted by Black94 5.0 (Member # 655) on
:
A roll bar is required in any convertible running 13.99 seconds or quicker in the quarter mile, and in other cars beginning at 11.99. The roll bar is accepted in vehicles running as quick as 10.00 second e.t., provided the stock firewall and floorboard is intact, other than for installation of wheel tubs. The rollbar must be constructed of minimum 1 ¾ inch o.d. x .118 inch wall mild steel tubing, or 1 ¾ x .083 chrome moly.....For more info go to nhra.com..Hope this answers your question
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