Requirement for class

[garrdonlits]

I have a 73 Camaro that will be in the 10's. I plan to run trophy slick and need to know what I need as far as safety equipment . I have a NHRA book but its confusing. I need to know what type of cage I need, do I need a jacket,I have current snell helmet, I have a 5 point harness, battery is in trunk and holes are covered in rear wall, switch is by rear tailight. I have a driveshaft loop, long wheel studs in the rear axles, and sub frame connectors. My car is still street legal and Im looking forwards to MAR opening.

[dennismopar73]

Once you go past 11.50 you will need a 'Roll Bar ' (full cage not needed til 9.99 faster).,, of min 1 3/4 ,,sfi balancer. yes a sfi jacket.
and neck restraint
Tranny shield sfi,, flexplate sfi,
should be good to go anywhere after that!

[garrdonlits]

Thanks Dennis, looks like Im shopping for tranny sheild, jacket and neck restraint. I have an sfi flywheel and balancer, I have a Comp Engineering Roll bar, does it need to be 6 or 8 point? Im trying to keep it street legal so I can at least drive it to cars shows or whatever. I want to have it ready for MAR so I wont have any issuse that would keep me from enjoying a day of racing.

[dennismopar73]

this should help you;
4:10 ROLL BARS
Mandatory in all cars running 11.49 or quicker, or per Class
Requirements. All roll bars must be within 6 inches of the rear
or side of the driver’s head, extend in height at least 3 inches
above the driver’s helmet with driver in normal driving position,
and be at least as wide as the driver’s shoulders or within 1
inch of the driver’s door. Roll bar must be adequately supported
or cross-braced to prevent forward or lateral collapse. Rear
braces must be of the same diameter and wall thickness as the
roll bar and intersect with the roll bar at a point not more than 5
inches from the top of the roll bar. Crossbar and rear braces
must be welded to main hoop. Sidebar must be included on
driver’s side and must pass the driver at a point midway
between the shoulder and elbow. Swing-out sidebar permitted.
All roll bars must have in their construction a cross bar for seat
bracing and as the shoulder-harness attachment point; cross
bar must be installed no more than 4 inches below, and not
above, the driver’s shoulders or to side bar. All vehicles with
OEM frame (i.e., pickup truck where body bolts to framerails)
must have roll bar welded or bolted to frame. Installation of
42 GENERAL REGULATIONS
frame connectors on unibody cars does not constitute a frame;
therefore, it is not necessary to have the roll bar attached to the
frame. Unibody cars with stock floor and firewall (wheeltubs
permitted) may attach roll bar with 6-inch x 6-inch x .125-inch
steel plates on top and bottom of floor bolted together with at
least four 3/8-inch bolts and nuts, or weld main hoop to rocker
sill area with .125-inch reinforcing plates, with plates welded
completely. All 4130 chrome moly tube welding must be done by
approved TIG heliarc process; mild steel welding must be done
by approved MIG wire feed or approved TIG heliarc process.
Welding must be free of slag and porosity. Any grinding of
welds prohibited. See illustration. Roll bar must be padded
anywhere driver’s helmet may contact it while in driving
position. Adequate padding must have minimum 1/4-inch
compression or meet SFI Spec 45.1.

All cars with an
OEM frame must have
roll bar attached to frame
Cars without frame
use 6" square 1/8" steel
plates on top and bottom of
floor, securely bolted
together with at least four
3/8" bolts, or top plate
welded to rocker sill
Maximum of 6" from roll bar to driver’s helmet
Maximum of 5" from top of roll bar to brace
All materials must be 1 3/4" O.D. x .118" mild steel or .083"
4130 chrome moly tubing, except A, which is
1 1/4" O.D. x .118" mild steel or .065" 4130 chrome moly tubing
5" max
A
BET THAT IS CLEAR AS MUD!!

[dennismopar73]

A 6 point is all that is required!
please notice you can swing the side bar to open!!

aS FOR THE ACTUAL ROOL BAR, WHEN YOU PUT IT IN,, TAKE THE TIME AND MAKE SURE IT IS OUT OF THE WAY FOR SEAT MOVEMENT, AND ALSO YOU CAN PUT IT TO ANGLE TOWARDS THE BACK TO GAIN SOME ROOM !

[mrthinkshesfunny]

Does the 3 " above the driver head include the thickness of the roll bar? In my Fox body my roll cage it at the roof but if I need 3 " of clearance I'll have to sit on the floor.

[dennismopar73]

so long as you clear, that's why try to 'tilt' the roll bar towards the rear,and up as far as you can.
some cars all you can do is put against the headliner, all you got!

[hemiman4262003]

garrdonlits,you should be able to go online at nhra and get your answers,we will help here too,you have a lot of it already

[garrdonlits]

If a 6 point is all thats required, I shouldnt need the saide bar? That parts where I get confused. A six point has the 2 from the hoop, 2 from the angle braces that connect to the hoop just below the cross brace, and the 2 down bars that go into the trunk. I want it safe, but it is still a street car and trying not to make it too difficult to drive it on the street. And I want it to comply with any guidelines MAR will be using, I dont want them to be in doubt of my car in any way. I want them to be able to look at it and see that I've taken all the precautions I need. Thank you all for this information, if anything else comes up, please let me know.

[falfa]

you at least need the side bar on the drivers side. it can be made removable.

[slingshot383]

Don't forget that if you run slicks, you must have a drive shaft loop, no further back than 6" from the front u-joint. If you install a roll bar, you should tie the front and rear subframes together, as you would build a house up from a good foundation, so should you build a chassis.