To make it come down on the crossmember of the chassis. It is a tube chassis car.
BTW, it looks as if the unanimous answer is yes, you can tilt it back but no definite answer on how much.
As far as weaker goes, the rear struts are only about 3' long so the entire structure is pretty stout. It's about like a capsule in there. My own cocoon of boost.
Originally posted by Nashty How much can a roll bar tilt backwards in a full bodied car? I hear 15º but saw nothing at all in the IHRA tech book for 2002.
TIA Roger
My suggestion would be to contact you local chassie inspector with NHRA. The director in your division is Jay Hullinger and the tech director is Ritch Bowers. The office address is 5 West State Road #218 Bunker Hill IN 46914. The Tech Director's number is (765) 689-8377. The Directors e-mail address is jhullinger@nhra.com the office hours are Monday ~ Wed 9 to 5
If you contact your local office I'm sure you got a chassie inspector in your area that for a fee will come and inspect what you want to do now and inform you what you can and can't do.
This may be cheaper than doing the work and finding out something is wrong later and you have to change it.