PDRA ANNOUNCES PRO EXTREME, PRO NITROUS AND PRO BOOST MINIMUM WEIGHTS
Posted Jan 15th 2014 @ http://competitionplus.com/drag-racing/news/27075-morning-news-sp-275045094
The recently formed Professional Drag Racers Association (PDRA) announced today, minimum weight limits for entries to its Pro Extreme (PX), Pro Nitrous (PN) and brand-new Pro Boost (PB) classes.
“The minimum weights are going to change a bit from what people were used to last year. Our Pro Extreme minimum is going from 2,200 pounds to 2,275 pounds,” PDRA Technical Director Rick Moore said. “That includes both car and driver and after weighing these cars all last year I can say there were a lot more heavier cars than there were light cars in this class, so this change will actually affect relatively few of the current teams.”
Similarly, Moore said the minimum weight in Pro Nitrous will increase from 2,300 pounds to 2,375 pounds.
“The way it was the rules benefited just a handful of lightweight cars while basically handicapping the rest of the field,” he explained. “What we’re doing will be more advantageous to more teams, to the drivers who might be a little bigger than others or to the smaller teams that maybe can’t afford the $150-thousand chassis.”
For the new Pro Boost class the minimum weight will be 2,550 pounds, Moore said. “There will be no overdrive restriction or rear gear restriction,” he added. “As long as its turbocharged, ProCharged or you run a 14-71 supercharger and you weigh at least 2,550 pounds, you can come race.”
Moore also said the Extreme Pro Stock (XPS) minimum weight of 2,425 pounds will not change, but the Pro Extreme Motorcycle (PXM) minimum may be slightly altered—but not before he consults with several top PXM drivers and tuners.
“We only want to make changes that will benefit the class—in any class,” Moore stated. “We’ll have a complete set of rules out very soon, but felt it was important to get these minimum weights out there as soon as possible so everyone can start preparing accordingly.”
PROFESSIONAL DRAG RACERS ASSOCIATION FORMED; ANNOUNCES 2014 TOUR SCHEDULE
Published January 6, 2014 @ http://dragstory.com/ws/?p=15824
SALTILLO, MS – A new organization has been formed to provide racers, fans and manufacturers involved with professional-level PDRA logooutlaw doorslammer drag racing a promising future in 2014 and beyond.
The Professional Drag Racers Association (PDRA), founded by well-known racers Jason and Mitchell Scruggs, Gene Hector, Roger Henson and Tommy Franklin, aspires to create a solid foundation for eighth-mile Pro Mod-style drag racing and offer their racing brethren with a stable, safe and competitive venue for the quickest and fastest doorslammers on the planet.
“Our goal is to give outlaw doorslammer racers, as well as all the fans, track operators and sponsors who have supported this kind of racing over the years, an organization they can be proud of,” says longtime racer Jason Scruggs. “The PDRA is racer owned and racer operated, and while we understand that there will be a building process, we’re looking forward to a strong series in 2014.”
The 2014 PDRA series tour will feature eight races starting with the season-opener on Friday and Saturday, April 4th-5th at Rockingham Dragway in Rockingham, North Carolina. The series will then move to South Georgia Motorsports Park in Valdosta, Georgia on May 9th-10th, Memphis International Raceway in Memphis, Tennessee on May 23rd-24th, U.S. 131 Motorsports Park in Martin, Michigan on June 27th-28th, Virginia Motorsports Park in Richmond, Virginia on July 25th-26th and Osage Casino Tulsa Raceway Park in Tulsa, Oklahoma for a unique “under the lights” race on August 15th-16th before returning to Rockingham Dragway on September 5th-6th. The series will then return to Richmond, Virginia on October 10th-11th for its conclusion at Virginia Motorsports Park.
At each stop on the 2014 PDRA series tour there will be eight eliminator categories contested, including Pro Extreme, Pro Nitrous, Extreme Pro Stock, Pro Boost, Pro Extreme Motorcycle, Top Sportsman, Top Dragster and Junior Dragster.
Longtime racers Bob Harris and Rick Moore, both of North Carolina, have been called upon for PDRA’s day-to-day operations and will spearhead the upstart organization’s forward progress.
“There are still a few details to work out, but we are thrilled at the support that has already been shown by racers, track operators and potential sponsors behind the scenes,” says Harris. “I’ve been a racer for over 30 years, involved with Pro Mod for the last 5-6 years with a son who races, and I’ve seen this type of racing really grow. Truthfully, it’s very important that we preserve it, and I think the sport needs an organization like PDRA. I’m looking forward to working with Rick, who I’ve worked closely with before, and – bottom line – we’re going to make this deal better than anything that’s out there currently. We’ve got all the tools to do so, and we’re committed to making PDRA the premiere eighth-mile drag racing association in the world.”
Rules, purse structure and various other items will be announced in the coming days and weeks, as well as the creation of an official PDRA website or call Bob Harris (919-880-4962) or Rick Moore (336-382-9516) for more information.
Osage Casino Tulsa Raceway Park Racers & Fans, here is a look at the 2014 Schedule we are working on. We still have a few races and events in the works but wanted to give everyone a look at all the fun and excitement we are planning for the 2014 season.
23rd NHRA Chassis Certification Day 8am
24th NHRA Chassis Certification Day 8am
1st Test N Tune 12pm - 5pm
8th Test N Tune 12pm - 5pm
15th Test N Tune/ Gamblers Race 12pm - 5pm
21st Test N Tune 12pm - 5pm
22nd Suburban Chevrolet Bracket Series Race #1 Gates open 12pm Time runs 2pm
23rd Suburban Chevrolet Bracket Series Race#2 Gates open 8am Church Services 9am Time runs 10am
29th 1/4 mile Index Race / Test N Tune Gates open 12pm
30th Fun Day Sunday $10 to race street car and $8 to watch 1pm - 6pm
4th Test N Tune 6pm - 11pm
5th Street Race on the Strip Gates open 12pm
5th Osage Casino Legendary Midnight Drags Gates open 10pm
6th Fun Day Sunday $10 to race street car and $8 to watch 1pm - 6pm
8th Hot Dogs & Hot Rods Car Club Night 6pm - 10pm
11th Test N Tune 6pm - 11pm
12th Suburban Chevrolet Bracket Series #3 NHRA National Dragster Challenge Wally Race Gates 12pm time runs 2pm
13th Suburban Chevrolet Bracket Series #4 NHRA Good Guys Challenge Race #1 Gates 8am church 9am time runs 10am
18th Test N Tune 6pm - 11pm
19th Oklahoma Streetcar Shootout (all makes)
19th Osage Casino Legendary Midnight Drags Gates open 10pm
25th X275 MX235 Shootout Testing 10am - 4pm
25th X275 MX235 Shootout Qualifying 6pm & 8pm/Test N Tune Gates open 3pm
26th PMRA Motorcycle Race Gates 10am Time runs 12pm X275 MX235, Shootout Gates open12pm Q 3 at 2pm
26th Osage Casino Legendary Midnight Drags & Rollin Coal Diesel Power Plus Shootout Gates open 11pm
27th Hell Ride Motorcycle Race Gates 10am
2nd Test N Tune 6pm - 11pm
3rd Mid America Mud Bog Race Gates open 12pm Races 2 pm
3rd Pontiac Nationals & BOP Challenge Gates 8am Racing 9am
3rd Osage Casino Legendary Midnight Drags Gates open 11pm
4th Rain Date Hell Ride
9th Test N Tune 6pm - 11pm
10th Index Race 1/4 and 1/8 Gates 1pm Time runs 3pm
10th Osage Casino Legendary Midnight Drags Gates open 11pm
13th Hot Dogs & Hot Rods Car Club Night 6pm - 10pm
15th Osage Casino Throw Down in T Town Testing 2pm- 10pm
16th-17th Osage Casino Throw Down in T Town
18th Rain Date Osage Casino Throw Down in T Town
23rd Test N Tune 6pm - 11pm
24th 4 Wheel Drive Mud Mania Mud Bog Races
25th 4 Wheel Drive Mud Mania Side by Side Fast track Race ATV/All vehicle Obstacle course
26th 4 Wheel Drive Mud Mania ATV/All vehicle Obstacle course
30th Test N Tune 6pm - 11pm
31st Index Race 1/4 and 1/8 Gates 1pm Time runs 3pm
31st Osage Casino Legendary Midnight Drags & Rollin Coal Diesel Power Plus Shootout Gates open 11pm
1st Fun Day Sunday $10 to race street car and $8 to watch 1pm - 6pm
6th Test N Tune 6pm - 11pm
7th Street Race on the Strip Gates open 12pm
7th Osage Casino Legendary Midnight Drags Gates open 11pm
8th Import Faceoff Gates Open 9am Time Runs 11am
10th Hot Dogs & Hot Rods Car Club Night 6pm - 10pm
13th Test N Tune 6pm - 11pm
14th Mid America Ford Shelby Meet Gates at 7am racing 9am
14th Osage Casino Legendary Midnight Drags & Rollin Coal Diesel Power Plus Shootout Gates open 11pm
19th Osage Casino NHRA Regional Testing
20th, 21st,22nd Osage Casino NHRA Regional Race Dragsters / Funny Cars
27th Test N Tune 6pm - 11pm
28th Suburban Chevrolet Bracket Series #5 NHRA JR Drag Racing Challenge Wally Race /PMRA Motorcycle
Gates 10am PMRA Time Runs 12pm Bracket Time runs 2pm
29th Suburban Chevrolet Bracket Series #6 NHRA Good Guys Challenge Race #2 Gates 8am church 9am time runs 10am
5th SPECIAL EVENT
6th Fun Day Sunday $10 to race street car and $8 to watch 1pm - 6pm
8th Hot Dogs & Hot Rods Car Club Night 6pm - 10pm
11th Test N Tune 6pm - 11pm
12th Mid America Mud Bog Race Gates3pm Races 5 pm
12th Suburban Chevrolet Bracket Series #7 NHRA King of the Track Wally Race Gates 3pm Time runs 5pm
13th Suburban Chevrolet Bracket Race #8 NHRA Good Guys Challenge Race #3 Gates 8am church 9am time runs 10am
17th X275, MX235, DRVW Testing 5pm -11pm
18th X275, MX235, DRVW Testing 10am - 4pm / Gates open 3pm Qualifying 7pm & 9pm
19th X275, MX235, DRVW Testing 9am - 3pm / Gates open 2pm Qualifying 4pm & 6pm Eliminations 8pm
20th X275 MX235 DRVW Rain Date
25th Test N Tune 6pm - 11pm
26th BIG MONEY MUDD RACE free tickets $10 car parking
31st National Bikers Round Up
1st National Bikers Round Up
2nd National Bikers Round Up
3rd National Bikers Round Up
8th Test N Tune 6pm - 11pm
9th Mid America Mud Bog Race Gates open 4pm Races 6pm
9th Index Race , MAKO Gates 4pm racing 6pm
9th Osage Casino Legendary Midnight Drags Gates open 11pm
10th Fun Day Sunday $10 to race street car and $8 to watch 1pm - 6pm
12th Hot Dogs & Hot Rods Car Club Night 6pm - 10pm
14th PDRA/National Pro Mod Race Testing
15th PDRA/National Pro Mod Race
16th PDRA/National Pro Mod Race
17th PDRA/National Pro Mod Race Rain Date
22nd Test N Tune 6pm - 11pm
23rd Conquer the Gauntlet
23rd Osage Casino Legendary Midnight Drags & Rollin Coal Diesel Power Plus Shootout Gates open 11pm
24th Fun Day Sunday $10 to race street car and $8 to watch 1pm - 6pm
29th 4 Wheel Drive Mud Mania
30th 4 Wheel Drive Mud Mania Mud Bog Races
31st 4 Wheel Drive Mud Mania Side by Side Fast track Race ATV/All vehicle Obstacle course
1st 4 Wheel Drive Mud Mania ATV/All vehicle Obstacle course
5th Test N Tune 6pm - 11pm
6th PMRA Motorcycle Race Gates open 12pm Time Runs 2pm 1/4 Mile Index Race
6th Osage Casino Legendary Midnight Drags Gates open 11pm
9th Hot Dogs & Hot Rods Car Club Night 6pm - 10pm
13th Suburban Chevrolet Bracket Race #9 NHRA State Champion Wally Race Gates 3pm Time runs 5pm
14th Suburban Chevrolet Bracket Race#10 NHRA Good Guys Challenge Race #4 Gates 8am church 9am time runs 10am
19th Osage Casino Nitro Nationals & Old Time Drags Racer Gates 12pm Spectator Gates 6pm
20th Osage Casino Nitro Nationals & Old Time Drags Racer Gates 8am Spectator Gates 10am
21st Osage Casino Nitro Nationals & old Time Drags Rain Date
26th X275 MX235 Shootout Qualifying 6pm & 8pm/Test N Tune Gates open 3pm
27th X275 MX235 & 1/4 Mile index Race Gates open 12pm Qualifying 2pm, 4pm Eliminations 6pm
27th Osage Casino Legendary Midnight Drags & Rollin Coal Diesel Power Plus Shootout Gates open 11pm
28th T Town Drags Motorcycle Race Gates open 10am
3rd Test N Tune 6pm - 11pm
4th Big Money No Prep Race Anything Runs
5th Fun Day Sunday $10 to race street car and $8 to watch 1pm - 6pm
10th Test N Tune 6pm - 11pm
11th Mid America Mud Bog Race Gates open 2pm Races 4pm
11th OKSCA Mods Vs Rods/ Diesel Drags Gates 10am
11th Osage Casino Legendary Midnight Drags Gates open 11pm
12th Duckus Crapus Duck Drags Invitation Only Race 10am
14th Hot Dogs & Hot Rods Car Club Night 6pm - 10pm
16th Osage Casino Throw Down in T Town Testing 2pm- 10pm
17th-18th Osage Casino Throw Down in T Town
19th Osage Casino Throw Down In T Town Rain Date
24th Test N Tune 6pm - 11pm
25th PMRA Motorcycle & Index Race Gates 10am Racing 12pm
25th Osage Casino Legendary Midnight Drags & Rollin Coal Diesel Power Plus Shootout Gates open 11pm
31st Test N Tune 6pm - 11pm
1st Thunder Jam Halloween BASH
8th Mopars at the park Gates open 8am
15th 1/4 Mile Index Race12pm -6pm
22nd Mako Finals Gates open 9am Racing 11am
Attention all 275 Drag Radial peeps... We are having 3 "Sears" X275 races this year also. These races will be run with the 2014 Sears rules and if you have any questions on them please contact Jordan @ 870-688-6686 for any questions that you might have concerning your ride. The rules are posted below so you can print them off, and we will have the full dates and payouts of all D/R races posted up very soon, so stay tuned for that and thanks for all your support in 2014. B.D.D.
The car must retain its original appearance, profiles, and dimensions. Factory roof and quarter panels must be used. Aftermarket fiberglass and/or carbon fiber replacement panels are limited to hood, front fenders, doors, deck-lids, and bumpers only. All front ends must be of factory dimensions and cannot be lengthened and must meet all NHRA/IHRA height. (See ground clearance note below). Any beam tripping devices forward of the bumper are prohibited. (Track tech official will have final say) Aftermarket wings and spoilers are permitted. Complete stock appearing front and rear bumpers are required. A hood must be used: scoop or hood must cover the entire induction system. Forward facing hood scoops/ turbo or supercharger inlets are permitted.
Minimum 3 inches from front of car to 12 inches behind centerline of front axle, 2 inches for remainder of car, except oil pan, oil retention device, and headers.
Factory appearing dashboard, door panels, and driver seat is required. Full Carpet is required on floorboards including transmission tunnel. Factory floor pan on driver and passenger side required from firewall to rear of door jamb. Transmission tunnel maybe removable and must be metal. Bare inside frame of car cannot be exposed. Aftermarket steering column is permitted.
OEM glass or Lexan windows are permitted.
Complete stock chassis and frame rails must be retained from motor plate/shock tower to behind the rear wheel opening. Back-halved cars are not permitted. Front core support may be modified or removed. Aftermarket bolt-on replacement front K-members/sub frames are allowed (if front shocks bolt to K-member then they must be in factory location). Shock tower can be notched or trimmed but must be in factory location, verifiable by the factory sheet metal being retained between frame rail and top of tower. Mini tubs are allowed. Rear frame rails may be notched for clearance and must be in the factory location. Factory wheelbase must be maintained. (+ or – 1 inch)
Maximum displacement for all engines is 588ci. Small blocks are allowed any deck height but must retain stock bore spacing. Big block allowed the following deck heights but must retain stock bore spacing. GM Big Blocks are limited to a 10.2 deck height. Ford Big Blocks are limited to a 10.3 deck height. Mopar Big Blocks are limited to a 10.7 deck height. (Cylinder head specs and list for BB Nitrous Combos to be released- billet blocks prohibited)
Single turbocharger limited to 88 mm maximum. (Garrett GT55-88, Exile ETR-88, or = Forced Induction, Comp, Bullseye - mid frame or current (2013) PTE Pro Mod MF88, PTE LF85 or LF88 turbos only). Turbocharger size will be verified by measuring the housing bore at the leading edge of the impeller wheel and must maintain the contour of the compressor housing. (Stepped or Clipped compressor wheel prohibited) Inducer dimensions will not exceed 3.462 inches and Exducer dimensions will not exceed 4.765 inches on MID FRAME turbos. Inducer dimensions will not exceed 3.462 inches and Exducer dimensions will not exceed 5.56 inches on LARGE FRAME turbos. The maximum diameter of the housing bore at the leading edge of the wheel may not exceed 2 mm more than the maximum allowable turbocharger size permitted. Inserts or reducers to achieve inlet or outlet dimensions prohibited. Any type of air to air or water to air intercooler permitted. Turbochargers w/nitrous-oxide prohibited except on 2-rotor, 4 cylinder, and inline 6 cylinder engines.
Cog or gear driven superchargers are permitted, must meet all factory inlet, outlet, and internal housing dimensions. Inserts or reducers to achieve inlet or outlet dimensions prohibited. Any type intercooler is permitted. Supercharger cannot be combined with nitrous oxide. Roots superchargers are limited to a 10-71. Centrifugal superchargers are permitted. Screw superchargers are not permitted.
Small block is permitted to run any type multi-stage nitrous systems. Big blocks are limited to a single stage nitrous system with single -6 line(**see below for accepted line) to fogger single wye to -4 line(**see below for accepted line) connected to fogger solenoids or single -6 line (** see below for accepted line) to plate solenoid(s) – A single stage fogger (2 nitrous solenoids and 2 fuel solenoids) are permitted or if using a single plate then your limited to (1 fuel solenoid, 1 nitrous solenoid), and 1 purge solenoid, purge must exit engine compartment. Small block nitrous are permitted water injection. EFI Big Blocks will only be allowed 2 nitrous solenoids for a dry nitrous system and will only have 1 line per nozzle/per cylinder. (Using both sides of the fogger nozzle on a dry EFI NOS BB combo are prohibited)(Push systems prohibited on big block combo and permitted on small block combo) All lines on big block combo must be visible and continuous from bottle to wye without interruption.
Any factory style automatic transmission allowed. OEM factory style manual transmission allowed. Bruno-Lenco transmissions are prohibited. Aftermarket clutch-less manual transmission and clutch assisted manual transmissions are permitted on naturally aspirated and nitrous small block combinations only. Electric shifters or air shifters are permitted.
Small Block combinations may run any type induction. Big Block combinations are limited to a dedicated single opening cast intake with a single carb or a single 4150 or 4500 series throttle body. (4 blade, dual blade or single blade throttle body permitted).
Dry sump oiling systems are permitted on all cars
Mufflers or inserts are required on all cars except for turbo cars. Exhaust may exit underneath car or out the front fenders but must not affect timing or staging beams.
Gasoline only is permitted. Alcohol/E85 permitted on roots blown/V6/Inline-6/4cyl applications. Alcohol or E-85 or other derivatives is prohibited on all other combinations. Meth injection prohibited. Water injection permitted on SB NOS combos only.
Functional headlights, taillights and brake lights required. All headlights, brake lights, etc. must be on car and not removed for any reason. All vehicles may be towed back from their passes.
Stock style or ladder bar suspension cars only. Aftermarket four links are prohibited on all cars. Aftermarket direct replacement components such as: front control arms, rear control arms, front coil over shocks, and rear coil over shocks are permitted. Aftermarket rack and pinion steering allowed. Rear leaf springs, springs, shocks, and coil-overs may be moved to accommodate tire clearance, and do not need to be mounted in stock location. Bolt-on or welded sub-frame connectors, rear sway bars, are permitted on all cars. Wheelie bars are prohibited on all cars. Torque arms are only permitted on cars that were originally equipped from factory with it. (see notes below) Upper and Lower control arms must be mounted in the factory chassis locations -S Box permitted.
All cars with power adder must compete on a Drag Radial type tire with the following sidewall designation 275/60/15. Naturally aspirated combos are permitted to run a 28.0” x 10.5” slick, no “W” tires permitted.
Minimum base Weights:
* All minimum weights include the driver.
Naturally Aspirated (small block) 2500 lbs.
Naturally Aspirated (big block) 2700 lbs.
Nitrous (small block) 2700 lbs.
Nitrous (big block single stage plate any deck height & conventional heads) 3250 lbs.
Nitrous (big block single stage fogger standard deck height & conventional heads) 3350 lbs.
Nitrous (big block single stage fogger with tall deck height and conventional head) 3400 lbs.
* Single YSI / F1A/6-71 Supercharger (small block) 2800 lbs.
Single F1C/8-71 Supercharger (small block) 2900 lbs.
Single F1R/Xi/10-71 Supercharger (small block – *mod motor or with stock valve angle heads) 3000lbs (add 100 lbs. for billet Xi) (deduct 50 lbs. for 8.2/8.7 deck)
Single F1R/Xi/10-71 Supercharger (small block – any cylinder head) 3100 lbs. (add 150 lbs. for billet Xi) (deduct 50 lbs. for 8.2/8.7 deck)
Single F1X/XB105 Supercharger (small block – *mod motor, LS 15* or with stock valve angle heads cast head only) 3250 lbs. (deduct 50 lbs. for 8.2/8.7 deck)
Single F1X/XB105 Supercharger (small block - inline head) 3350 lbs. (deduct 50 lbs. for 8.2/8.7 deck)
Single F1X/XB105 Supercharger (small block - non-inline head includes SB Mopar SVA hemi style) 3450 lbs. (deduct 50 lbs. for 8.2/8.7 deck)
* Single 76mm T6 Turbocharger (mid frame GT47 based) (small block) 2700 lbs.
Single 80mm T6 Turbocharger (mid frame GT47 based) (small block) 2800 lbs.
Single 83/85mm T6 Turbocharger (mid frame GT47 based) (small block) 2900 lbs.
Single 88mm T6 Turbocharger (Y2K or GT47-88 ) (mid-frame) (small block) 3000 lbs.
Single 88mm T6 Turbocharger (GTX55-88 ) (small block - mod motor or stock valve angle cast head) 3250 lbs. (deduct 50 lbs. for 8.2 deck)(deduct 150 lbs. for GTX55-85)
Single 88mm T6 Turbocharger (GTX55-88 ) (small block - any head) 3300 lbs.(deduct 100 lbs. for GTX55-85)
Single 85mm T6 Turbocharger (Large Frame 85) (small block – mod motor or stock valve angle cast head only) 3200 lbs.
Single 85mm T6 Turbocharger (Large Frame 85) (small block) 3250 lbs.
Single 88mm T6 Turbocharger (Large Frame 88/PTE Pro Mod MF88 ) (small block – mod motor or stock valve angle cast head only) 3300 lbs.
Single 88mm T6 Turbocharger (Large Frame 88/PTE Pro Mod MF88 ) (small block cast head only) 3400 lbs.
* Small Blocks (NOS & N/A) with single 4150 carb/throttle body: deduct 50lbs
*Small Block (NOS) with any plate nitrous system: deduct 50lbs (deduct does not apply if used in conjunction with fogger)
* Small Blocks (NOS & N/A) with 23 degree Chevy heads, 20 degree Ford heads, and 18 degree
Mopar heads: deduct 100 lbs. RR - 75 lbs.
* Small Blocks (NOS only) 18–10 degree valve angle inline head: deduct 50 lbs.
* Small Blocks (NOS only) cast t-ram/sheet metal/2 carbs or 2 throttle bodies: add 50 lbs.
*Throttle Bodies exceeding 4500 series on Big Block combinations: add 50lbs
* Non-Intercooled boosted cars on gasoline: deduct 50 lbs.
* Belt driven centrifugal superchargers: deduct 50lbs.
* Aftermarket rear suspension COPO Chevy and Drag Pack permitted on the new Camaro and Challengers must be mounted in exact factory location on body/frame. Torque arm on late model GTO/5th gen Camaro. Corvette with any leaf spring suspension permitted.
* Buick/Olds/Pontiac Nitrous combos will be 3150 lbs. and not to exceed 588 cu inches
* V-6/Inline 6/4 cylinder Turbocharged/Supercharged/Nitrous combos will deduct 250 lbs. from base weight on gas and 150 lbs. if on alcohol *Factory IRS deduct 50 lbs.
**-6 and -4 nitrous line(s) must be of standard braided line construction, (high pressure hydraulic line prohibited as they exceed the internal diameter of industry standard) Standard spec lines/fittings only.
-4 I.D. .153 to .154
-4 I.D. with -6 Nut .153 to .154
-6 I.D. .275 to .276
Big Block Chevy Cylinder Head:
Conventional Heads as referenced to the original Mark IV design. (BBC symmetrical or raised port design is not defined as conventional for these rules)
- Stock port location/Standard port location – no raised runner
- Floor of port may not be more than .550 from deck
- No port plates or intake manifold adapter plates permitted
- No epoxy or welding permitted except for repair in chambers or between cylinders
- No welding of tops of runners except for adding bolt bosses for rocker stands
- Intake valve angle will measure 24* + or – 1*
- Maximum dimension allowable from deck surface to the top of the intake port will be no more than 3.125”
- Heads with “AS CAST” intake port lower than this dimension will be permitted.
- No welding or epoxy permitted to achieve this dimension.
- Tech official has final say at the time of inspection on any issues that may arise
Suggested castings to include the following:
• CFE/BMF 350 – 405cc Big Block Chevrolet
Chevrolet Factory OEM Iron & Aluminum; OEM Aluminum
• Brodix BB-1, BB-1 OEF1, BB-2, BB-2X, BB-2 Extra, BB-2 Plus, BB-3, BB3X, SR23 (non-raised runner Head Hunter)
• Edelbrock Victor & Victor CNC, Edelbrock Victor Jr. CNC Oval & Rect
• Edelbrock Performer RPM 454-O, 454-O, 454-R
• Edelbrock Victor 24-degree Rectangular Port #77419, #77409
• Edelbrock RPM XT Rectangle PN#51539
• Edelbrock RPM XT Oval PN#51459
• Edelbrock Victor PN#61409
• Edelbrock Victor PN#61419
• Edelbrock Victor PN#77609
Pro – Filer Sniper and SniperX 290 cc 320 cc and 375 cc
• Dart Pro 1 310 cc thru 355 cc, Race Series 265 cc thru 360 cc, Dart 380 Pro2
• Canfield Big Block Chevy 24.5-800, 24.5-900
• GMPP Signature Series BB Heads cast # 12363401, 12363391
• Air Flow Research 265, 290, 305, 315, 325, 335, 345, 357, 385, Oval, Rect & CNC Port
• World Products Merlin II Oval & Rect Port 269, 320, 345, 305, 350 Iron & Alum
• (RHS)Pro Top Line Pro Thunder 320, 360 cc Alum & Iron
Big Block Ford Cylinder Head:
- Factory cast Iron heads (don’t think we’ll see many of them )
- A-429 Cobra Jet (Ford Motorsports)
- Cobra Jet (Blue Thunder, Trick Flow)
- Super Cobra Jet (Ford Motorsports, FRPP/Kaase)
- Blue Thunder “B” head
- Street Heat (Trick Flow)
- Edelbrock RPM
- P-51′s (Kaase)
- “A” designation heads (All manufacturers, Ford Motorsports, FRPP, Trick Flow, Eliminator, EX514, etc. . .)
Big Block Mopar:
B-1 style cylinder heads only
* If one combination appears to have an advantage rules may be changed at the race director’s discretion in order to keep a level playing field for all competitors.