94Z28rag

iTrader: (10)

Thanks guys. I decided to do it as I'm already having it tweaked for a window net and ready to run 9's. The dash was a PITA, but at least it's done now.

barkingspud

iTrader: (3)

Ummm..

You may way to fix up the second post in this sticky. Unless I'm missing something completely the following NHRA illustration of a sample roll cage is good to 7.50 NOT 8.50.

Villain281H

iTrader: (5)

A sub 8.50 legal cage requires additional bars underneath the floor as well as a funny car enclosure around the driver.

Derek

barkingspud

iTrader: (3)

Then the illustration is incorrect?

Villain281H

iTrader: (5)

The illustration is correct for 8.50-9.99 as is stated.

JL ws-6

iTrader: (50)

The picture above isn't exactly right, the bar it's picturing along the floor isn't required for an 8.50 cert. I don't have one in that location on my car and it passed cert in 2008 no problems

Other then that the picture is right.

Villain281H

iTrader: (5)

JL you are right on the bottom bar. I had it put on mine for the cert and it wasn't needed on a non-modified floorpan. I'll have to check the NHRA rulebook on it when I get a chance b/c I know it is required for some applications.

senicalj4579

iTrader: (41)

Hey I have a question about the rules for 13.99 1/4-mile (8.59 1/8-mile) or quicker:
Says A driveshaft safety loop is required when you run slicks (not drag radials or street tires. My question is...what is a mt et street considered? Hopefully not a slick.

JL ws-6

iTrader: (50)

Drag radials are no different then slicks. Hell with radials I'd have MORE safety stuff, like better studs, etc.

You go into tire shake, or wheel hop with the radial and believe me it's gonna have just as good of a chance, if not a better chance of doing some carnage.

senicalj4579

iTrader: (41)

My question is what does the rule book consider et streets. Slick or radial? I know..its a newbie question..

barkingspud

iTrader: (3)

The title of the illustration clearly states:

FULL-BODIED CARS
7.50 Seconds and slower

Unless my reading comprehension went totally downhill, that means that the illustration shows a rollcage that is NHRA approved for cars going no quicker than 7.50 seconds in the 1/4 mile.

JL ws-6

iTrader: (50)

That picture is from an older rulebook. The rule changed in 2007 I do believe, if you want to go faster then 8.50 in the 1/4 you need a 25.5 cert chassis.

sportsman cage (8pt) 9.99-8.50
25.5 8.49-7.50 @ 3600 lbs
25.6 good to 6.50 @ 3600 lbs
25.2 good to 6.0 @ 3200 lbs
25.1 and 25.4, but I don't recall off the top of my head what they're good to, I know that they're for FAST cars, that much I'm sure of.

barkingspud

iTrader: (3)

Yea...I gathered that. Appreciate it. I shouldn't be quicker than 8.50 first season out with my car so, no biggie...

Villain281H

iTrader: (5)

My apologies; I didn't see the "2007" on the illustration. It was linked by another moderator, and I did have the 9.99 to 8.50 rules listed. Sorry for the confusion!

On the M/T ET Street radial question, they are considered a radial thus a driveshaft loop is not needed until 11.49 and quicker. However as JL pointed out, safety is never a bad thing, and luckily most driveshaft loops for F-bodies are a bolt-it deal (I have a Metco on my Formula that simply bolted in place and although I don't need it it's nice insurance to have).

Derek

Fireball

iTrader: (21)

Um..not 100% right.

25.6 doesn't exist
25.3 is 6.50 @ 3600lb
25.1 is 6.00 @ 2800lb
25.4 is 7.50 @ 3600lb (full tube chassis)
25.5 is 7.50 @ 3600lb (OEM frame/unibody)

JL ws-6

iTrader: (50)

Sorry that 6 is a typo on my part. That was supposed to be a 3. Total FAIL on my part.

1baaadz28

iTrader: (9)

What about fuel cells, when are they required? I have an 02 z28.
Thanks for the help, justin

Villain281H

iTrader: (5)

Justin, the NHRA rulebook doesn't list an e.t. where a fuel tank must be replaced with a fuel cell.

There is a general rule on both tanks and cells:
"All fuel tanks must be isolated from the driver's compartment by a firewall, completely sealed to prevent any fuel from entering the driver's compartment."

However, if you do replace a tank with a cell, the rulebook states:
"fuel cells must have a metal box protecting the part of the fuel cell that is outside the body lines or trunk floor, excluding hose connection area in rear. Non-metallic fuel cells and tanks must be grounded to frame."

1baaadz28

iTrader: (9)

thanks for the info Villain

WhiteLTone

iTrader: (18)

Quick question guys, I'm on my cell otherwise I'd search thru the forums, but it'd take all day on this phone.

- when having the battery mounted upfront "small lightweight battery" is it required to have an on/off switch still reguardless of et or mph?

-on the ds loop, is there a specific location in the tunnel this needs to be or will say the middle between rear and trans?