What can a conv. run with a 6 point rollbar? This is without a hardtop, just cloth and the bar.
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93 Automatic White Vert. 4.09 gears, Yank 3000 converter, Hot Cam, ported heads, Exotic Muscle LT headers, magnaflow mufflers Meziere water pump, and professionally tuned by Alvin and it passes emissions!!
My best run 11.82 ET at 116.52 mph. and 1.66 60ft.
My wifes best run 11.71 at 117.31 mph.
362 rwhp
379 torque
93 6 speed White Vert. 383 with a rear mount 85mm turbo. water to air intercooler, 6 pt. rollbar. Gen. 7 dfi. and many more extras. No numbers yet!!
If I'm not mistaken, you can as low as 10.00 but not faster than 135mph.
That was what I was hoping for. Thanks for your help!!
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93 Automatic White Vert. 4.09 gears, Yank 3000 converter, Hot Cam, ported heads, Exotic Muscle LT headers, magnaflow mufflers Meziere water pump, and professionally tuned by Alvin and it passes emissions!!
My best run 11.82 ET at 116.52 mph. and 1.66 60ft.
My wifes best run 11.71 at 117.31 mph.
362 rwhp
379 torque
93 6 speed White Vert. 383 with a rear mount 85mm turbo. water to air intercooler, 6 pt. rollbar. Gen. 7 dfi. and many more extras. No numbers yet!!
That was what I was hoping for. Thanks for your help!!
Sorry, guys. The fast limit is 13.50. At 13.49 you need a minimum 5 point roll bar. The rules are no different for a 6 point bar. At 13.49 you need an NHRA legal roll bar.
Sorry, guys. The fast limit is 13.50. At 13.49 you need a minimum 5 point roll bar. The rules are no different for a 6 point bar. At 13.49 you need an NHRA legal roll bar.
RACE ON!!!
Maybe I should add more info to this. I purchased a conv. vette which has a 6 point roll bar in it now. It has the door bar with swing outs. I was told it is a NHRA legal bar, and I assume it is.
My understanding, without a roll bar was 13.49 for a conv. and 11.49 on a hardtop. Then, if a 6 point NHRA legal bar was added to a hardtop, it was good for 10.00 et.
Now, here is my question.
"Assuming" it is a "Legal 6 point NHRA bar" is it ok to go as low as 10.00 et with a conv?
__________________
93 Automatic White Vert. 4.09 gears, Yank 3000 converter, Hot Cam, ported heads, Exotic Muscle LT headers, magnaflow mufflers Meziere water pump, and professionally tuned by Alvin and it passes emissions!!
My best run 11.82 ET at 116.52 mph. and 1.66 60ft.
My wifes best run 11.71 at 117.31 mph.
362 rwhp
379 torque
93 6 speed White Vert. 383 with a rear mount 85mm turbo. water to air intercooler, 6 pt. rollbar. Gen. 7 dfi. and many more extras. No numbers yet!!
"Assuming" it is a "Legal 6 point NHRA bar" is it ok to go as low as 10.00 et with a conv?
Yes My bad, i'm incorrect ***See the 2 answers below me as THEY ARE CORRECT*** The answer as described in the posts below, is located on page 21 of the 2007 NHRA Rule Book if you have one.
"Assuming" it is a "Legal 6 point NHRA bar" is it ok to go as low as 10.00 et with a conv?
No. Sorry, I answered a question you didn't ask, above. The roll bar that is legal to 10.00 in a coupe is only good down to 11.00 in a convertible. A convertible must have a roll cage to run 10.99 and faster.
NHRA has specs for a roll bar. One of the specs is that be a minimum of 5 points. A swing out door bar is allowed. NHRA also has rules as to what ETs and car configurations require a roll bar. Whether the bar is chromoly or mild steel, 5 point or 6 point, with or without a swing out door bar, does not change or extend where it is required. I don't question whether your bar is legal or not. I had HUA syndrome when I wrote my first answer. I addressed how fast you could be before a roll bar is needed. You wanted to know how fast before a roll cage is needed. The information you added wasn't necessary, but it did serve as a wake up call for me. Sorry about the first, and I hope this helps.
Convertables running 10.99 or quicker or exceeding 135 mph roll cage mandatory .
Roll bar mandatory in all cars (including T-tops)running 11.00 to 11.49,convertables running 11.00 to 11.49.
Cage mandatory for 10.99 or quicker or exceeding 135 mph.
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Johnny Carson once said.A married man may live longer ,but is more willing to die.
Convertables running 10.99 or quicker or exceeding 135 mph roll cage mandatory .
Roll bar mandatory in all cars (including T-tops)running 11.00 to 11.49,convertables running 11.00 to 11.49.
Cage mandatory for 10.99 or quicker or exceeding 135 mph.
Correction: ...convertibles running 11.00 to 13.49.
Also in the roll cage section, coupes are given a break from the cage requirement between 10.00 and 10.99 if they are full bodied and have an unaltered firewall, floor and body. I have paraphrased, slightly, so see the 2007 NHRA Rulebook for details.
I will add, I purchased a vette from fellow forum member "Bruce" which is the car I am refering too. It needs a little work, ie oil leaks, and the DFI system has not been tuned yet. It has a 383 and a rear mount 85mm turbo. Bruce made 544rwhp with a 14lb supercharger before going turbo, so the car has potiental. However it does have a stock diff, and a 6 speed, so those will limit the ET.
I have a hardtop from my other vette, but I do not know if it will clear the rollbar or not.
Again, I want to thank everyone for taking the time to answer my questions.
__________________
93 Automatic White Vert. 4.09 gears, Yank 3000 converter, Hot Cam, ported heads, Exotic Muscle LT headers, magnaflow mufflers Meziere water pump, and professionally tuned by Alvin and it passes emissions!!
My best run 11.82 ET at 116.52 mph. and 1.66 60ft.
My wifes best run 11.71 at 117.31 mph.
362 rwhp
379 torque
93 6 speed White Vert. 383 with a rear mount 85mm turbo. water to air intercooler, 6 pt. rollbar. Gen. 7 dfi. and many more extras. No numbers yet!!
Oh believe me, you are on my mind. Look forward to seeing you and everyone this fall!!
__________________
93 Automatic White Vert. 4.09 gears, Yank 3000 converter, Hot Cam, ported heads, Exotic Muscle LT headers, magnaflow mufflers Meziere water pump, and professionally tuned by Alvin and it passes emissions!!
My best run 11.82 ET at 116.52 mph. and 1.66 60ft.
My wifes best run 11.71 at 117.31 mph.
362 rwhp
379 torque
93 6 speed White Vert. 383 with a rear mount 85mm turbo. water to air intercooler, 6 pt. rollbar. Gen. 7 dfi. and many more extras. No numbers yet!!
Corvette Store
NHRA question
My bad, i'm incorrect 
Look forward to seeing you and everyone this fall!! 
