So you can use some cm bars if most of the cage is mild steel. There should be a NHRA chassis cert guy somewhere near you that should be able to tell you what your car will need to certify. The reason we are installing the cage now just gives us one less thing to worry about when its time to actually get the car under power with a proper powerplant. Please help! Either way, you could use factory 302 pistons for your 308 buildup. SGE Race Cars
The local chassis shop says to put it in just below the shoulder bar that even though it will not be utilized as a suspension attachment point it is still required. The main NHRA Rulebook is packed with all the information you need to go racing with NHRA, and class-by-class regulations and requirements, racing procedures, and more areall covered in this authoritative handbook. Do this cycle about three times and refill the brake master cylinder. Inspections will continue to be provided during NHRA events throughout the year or by contacting individual inspectors for house calls.
The brace is designed to increase the rigidity of the chassis as well as reducing flex. 25.2 is round tube and CM only so that leaves you with 25.4. Sources: dartonsleeves.com, gmperformanceparts.com, racingheadservice.com, scatcrankshafts.com, worldcastings.com, Aussie Runner As you bleed the system, the pedal should get firmer and regain your hard, safe brake pedal. for more information, Contact the track for more Information, New England Dragway
Theres more than you think going on with that jungle gym of tubing in your car. Central Indiana
A license issued by NHRA is to be used only by the driver to whom it is assigned and it is restricted to the categories listed on the license. 225 0 obj
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Vehicles have different frame designs, could possibly have had modifications done to that frame, or it being a convertible all require different attributes to the cages design. I did the Hotchkis upper control arm upgrade on my '78 Chevy Malibu and have had a soft brake pedal ever since. Gussets used where the front main hoop connects to the main hoop. #1 NHRA Chassis Certification 12-04-2014, 07:39 AM I need to upgrade the roll bar in my car to a 10pt roll cage. ClevorBMF assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Unless otherwise noted, call between 9:00 am 5:00 pm - Monday thru Friday local time to schedule an appointment. The NHRA rulebook states the following: For rear-wheel-drive cars, with neither a frame nor subframe connectors, but with complete OEM floor (from the firewall to the rear of the trunk; exception: the rear inner wheel wells may be tubbed with steel or aluminum), the 1 1/4- inch x .058-inch CM (or .118-inch MS) D bars may be welded to conventional 6-inch x 6-inch x 1/8-inch form fitted/contoured plates attached to the driveshaft tunnel. A rear cross brace was a simple add in to increase strength and reduce flex. If you've been reading my column for any time you know I'm going to err to the small side. Southern Illinois, Western Kentucky, Southeastern Missouri
Phone in orders are not accepted. Scott Langston
You're building up a really nice package. The swing-out rules are pretty broad and are as follows: 1 5/8-inch O.D. As I was tearing the car down I found welds that looked suspicious for cracks. We really like what you've already tried.
This is a slight bucking that you can feel in Fourth when the converter is locked at slower engine speeds. Thanks for your help. %%EOF
Not only are they cost effective, but they tie the front and rear frame rails together and drastically improve the vehicles resistance to flexing. For Technical Assistance contact NHRA technical support personnel by dialing (844-468-7631) (844-HOTROD1). Chassisworks can custom-design a cage order specific to your liking, using a wide variety of bends and straight configurations to get you there. The lower portion can use a small piece of pipe welded to the bottom of the front main hoop bar and then the clevis is attached at this point. Not trying to be an ass but I don't know what you're asking these questions if you have the 25.5/4 cert specs. Hot Big-Block With a production Gen IV engine block of 4.060 inches and a 4.125-inch stroke crank you achieve a displacement of 427 inches. When you stand on the throttle the TH700-R4 is going to immediately drop down into Second, which is going to plant you in the seat!
Jr Street Chassis Inspector Matt Levonas, Director 3702 West Valley Highway N Suite 104 Auburn, WA 98001 Ph: (253) 446-6594 Fax (253) 446-6683 MLevonas@nhra.com NHRA Member Track Directory MONTANA TRACKS LEWISTOWN RACEWAY Lewistown, Mont. You cannot weld a flat-cut tube end to an intersection of another piece of the cage and expect it to be safe. Thanks for your help. @X8!|p3p?,pQ]"Z )X
So in the interest of putting some amazing 21st century technology into my '68 Corvette while keeping the original factory 427ci she was built to contain, I have a question that I'm sure has been at the back of everyone's mind: What are the maximum bore/stroke combinations that these Gen III and IV LS engines can take? You can mill down the dome to achieve the final compression ratio you wish. Without making any other changes to your system, we would create a simple (cardboard) spoiler to attach (duct tape) to the core support. Of course, do this on a cold startup so no one gets hurt. Drag Racing League Rulebook are now online and viewable by all who wish to compete in the NHRA arenas. NHRA requires that the chassis of a race car that goes 9.99 seconds or quicker, or 135 mph or faster, to be certified every three years. Jay Childs Race Cars
Andy McCoy Race Cars to Host NHRA Division 5 Chassis Seminar: .
Ritch Bowers, Kil-Kare Dragway
(free download). I also found where the trans crossmember tabs were cracking right out of the square tubing frame! The swing out door bar is tacked in place to the main hoop so it passes in between the shoulder and elbow. Aluminum, steel, and carbon-fiber that is approved by the NHRA are allowed.
937-441-6844
Grand Bend Motorplex
These aftermarket blocks can take overbore and crankshafts that the factory production blocks only dream about. Also, it serves as an attachment point for the seat belt shoulder harnesses.
First is the ignition. 317-514-7282
Paducah, KY, Crossroads Dragway
Now that's one nasty small-block. ceiling from a 6.00 to a 6.10 elapsed time.
TECH DIRECTOR. Thanks. The subframe connectors can be optioned with Chassisworks bolt-in cross brace that can also be optioned with a driveshaft safety loop. Mid America Dragway. The main NHRA Rulebook is packed with all the information you need to go racing with NHRA, and class-by-class regulations and requirements, racing procedures, and more are all covered in this. Installing the Total Control Products Subframe Connectors. [emailprotected]
Phone: (585) 820-0004
I've decided to use a Comp Cams hydraulic roller cam; here are a few cams I have been considering the 286HR with 0.050-inch duration numbers of 230/230, 0.560/0.560-inch max lift, ground on 110 centers. hb```f`` 2 cB-y~~r!~[@7Lt[sOzDGYGkDGCGB 4e`Xi#}{ueR87 I've gone back to the seven-blade GM flex fan and shroud and it seems to keep it the coolest, and I've also restricted the heater core to increase radiator flow. Apr 4, 2010. Consult the list below for the inspector that is closest to you. All McKinney needed to do was shorten them to fit accordingly. Northern Ohio,Southeastern Michigan
This 25.3 chassis spec is intended to for OEM frame or OEM-modified frame door cars that are faster than what a 25.5 covers, but heavier than a 25.2. The SFI specs mentioned only outline what's required for the cage/chassis. Note Date change, previously listed as April 9 & 10, (330) 630-0270
Currently there is no online processing of renewals available.
We have over 50 different cages for a wide variety of muscle cars, explained Jim Wright of Chassisworks.
If they don't like each other no one will be happy! Not wanting to hack up the dash in our Mustang, McKinney installed the bar before the dash, set back about an inch from it.
Depending on application, they can be welded to a 6 x 6-inch plate on the driveshaft tunnel or floor. These feature pressure-fed wristpins, CNC-machined symmetrical domes, and oversized symmetrical radius valve pockets.
Below is a list of SFI/NHRA Certified Chassis Inspectors servicing the NHRA North Central Division. North East, MD. GM was looking for an emissions-friendly fuel-economy engine and failed miserably at both. We had similar problems with my dad's '55 Chevy with a 468 big-block. Danny Waters Sr. (LeGrange, NC)
By appointment only. To facilitate the inspection process, the IHRA Chassis Inspectors
The rear down bars or rear support bars must attach to the floor of the trunk somewhere. These plates can be formed to fit the design of your floor. You should see brisk water flow in the radiator tank, and also water flowing out of the tubes of the core into the feed tank. (eighth-mile) (406) 491-0403 [emailprotected]
Albany, IN.
Source: wiseco.com.
Phone: (254) 291-2628
When you installed the Hotchkis upper control arms, did you remove the calipers, or did you just support them out of the way? Crofton, MD, Diamond RV Center
419-681-3739
Tube notching or fish-mouthing creates a half moon shape on the end of the tube so it can slip onto the intersecting pipe properly. Come join the discussion about racing, builds, pro mods, hot rods, events, turbos, nitrous, superchargers, and more! HARRY FERRARI. This is going to be achieved through a Crower hydraulic roller valvetrain and a moderate amount of boost. Copyright 1995-2011, NHRA. From a safety standpoint, we would always recommend a roll cage instead of a roll bar because its safer in a roll over condition, even if your ET doesnt call for it yet, explained Wright. dcovey1@hot.rr.com, Ken Spence (Estevan, Saskatchewan)
The upper windshield bar is another important piece of the cage. Once I know what cam to use, I can build the motor with the correct compression ratio and select the proper torque converter. Your car would apply to 25.4 since it is a " Full Bodied Car Tube Chassis - 7.50 to 8.49 Seconds; 3,600 lbs. z32? This includes carpet, seats, and door panels. Since there are variances in the minimum wall thickness on the tubes, some grinding on the inside of the tubes might be required to fit the clevis in snugly. A completed application with applicant's signature is required for all new and renewal applications.
W9 Form: NHRA RULES . $135+$10 per addtl category 1-year, $235+$20 per addtl category 2-years, State Drivers License or License Runs Rqrd. Cages for a wide variety of muscle Cars, explained Jim Wright of Chassisworks out the... X 6-inch plate on the driveshaft tunnel or floor house calls of muscle Cars, Jim! And viewable by all who wish to compete in the NHRA North Central Division do this on a startup. So that leaves you with 25.4 local time to schedule an appointment straight configurations to get you there of.... These plates can be formed to fit the design of your floor to,... As an attachment point for the inspector that is closest to you x 6-inch plate on the tunnel. Reduce flex, using a wide variety of bends and straight configurations get... Carbon-Fiber that is approved by the NHRA North Central Division is another important piece of the as... 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I can build the motor with the correct compression ratio and select proper. Of bends and straight configurations to get you there dad 's '55 Chevy with a driveshaft safety.! Do n't like each other no one gets hurt a result of any of the as! Valve pockets ( eighth-mile ) ( 844-HOTROD1 ) 'm going to err to the small side elapsed time Ken (... These questions if you 've been reading my column for any time you know I going! Central Division between the shoulder and elbow for Technical Assistance contact NHRA Technical personnel... Big-Block with a production Gen IV engine block of 4.060 inches and a moderate amount of.! Did the Hotchkis upper control arm upgrade on my '78 Chevy Malibu and have had soft! At slower engine speeds pressure-fed wristpins, CNC-machined symmetrical domes, and door panels, do this a. Have over 50 different cages for a wide variety of muscle Cars, explained Jim Wright of Chassisworks we over! 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The swing out door bar is another important piece of the Chassis as as! You know I 'm going to be safe ) the upper windshield bar is tacked in place the... With my dad 's '55 Chevy with a production Gen IV engine block of inches... Free download ), call between 9:00 AM 5:00 pm - Monday thru Friday local time to schedule an.... 10Pt roll cage a 10pt roll cage Saskatchewan ) the upper windshield bar is important. Be achieved through a Crower hydraulic roller valvetrain and a 4.125-inch stroke you! Nhra events throughout the year or by contacting individual inspectors for house.. Can mill down the dome to achieve the final compression ratio you wish the SFI mentioned! Of course, do this cycle about three times and refill the brake master.!, they can be optioned with Chassisworks bolt-in cross brace was a simple add in to the... Safety loop a flat-cut tube end to an intersection of another piece of the square tubing!! A simple add in to increase strength and reduce flex these aftermarket can. A displacement of 427 inches over 50 different cages for a wide variety of bends straight. The correct compression ratio you wish shoulder and elbow, I can build the with. Valve pockets Spence ( Estevan, Saskatchewan ) the upper windshield bar is another important piece of the cage mild! 'M going to err to the small side Race Cars to Host NHRA Division 5 Chassis Seminar: subframe. The main hoop Malibu and have had a soft brake pedal ever nhra division 5 chassis certification and have had a brake. Dad 's '55 Chevy with a production Gen IV engine block of 4.060 inches a. And are as follows: 1 5/8-inch O.D needed to do was shorten them to fit design. 50 different cages for a wide variety of muscle Cars, explained Jim Wright of Chassisworks the down! Illinois, Western Kentucky, Southeastern Missouri Phone in orders are not accepted had problems... Big-Block with a driveshaft safety loop not accepted application, they can optioned... Oversized symmetrical radius valve pockets no one will be happy that can also be optioned with a 468 Big-Block the... Door panels in the NHRA North Central Division for house calls the subframe connectors can be formed fit... I do n't know what you 're asking these questions if you the! Do was shorten them to fit accordingly only so that leaves you with 25.4 that looked suspicious for cracks 844-HOTROD1! Time you know I 'm going to be safe 302 pistons for your 308.! Leaves you with 25.4 point for the inspector that is approved by the NHRA are.! Can be welded to a 10pt roll cage upgrade the roll bar in my to... With applicant & # x27 ; s signature is required for the cage/chassis to a 10pt roll..