INLINERS INTERNATIONAL
Drag Competition Class Rules

GENERAL REGULATIONS

  1. Line locks permitted.
  2. Driver must be a club member in good standing.
  3. Trans brake permitted.
  4. Shift light and play back tack allowed.  No data recording devices (mechanical or electronic) allowed.
  5. High-end rev limiter allowed, one rev limiter only (high-end or low).
  6. Nitrous oxide allowed only when activated by a single pole switch, either by pedal or push button.  No electronic or mechanical timers allowed.
  7. When power add-ons (turbo, superchargers, NOS) are allowed in applicable classes, no combined uses permitted except in fuel-altered.  In applicable turbo and supercharge classes, double letter designates use.  Nitrous oxide has separate class.
  8. Cars will be weighed with driver, ready to run.  Any weight added must be firmly attached to the car.  Drums or similar containers filled with liquid may not be used as ballast.  Weight may neither be added nor reduced after a car has been officially classified.  100 lbs maximum, 2 each ½” bolts per 50 lbs.
  9. Weight, fuel or other infraction of the rules not requiring engine disassembly may be protested without charge.
  10. Protest on engine displacement must be made in writing and accompanied by a protest fee of $100 for overhead valve engines and $75 for flatheads.  Protest fee will be forfeited to the car owner if the protested car is found to be legal for its proper class.  If the car is found to be illegal, the owner of the protested car will be subject to disciplinary action by the drag committee.
  11. Engine displacement checks will be performed by the tech committee personnel only to the extent of measuring the bore and stroke.  A protested engine must be disassembled for inspection and reassembled after inspection by the car owner and/or his pit crew.  Refusal to disassemble an engine upon official protest request may result in suspension of the car owner from further participation in future club-sponsored activities.
  12. Cars will be classified according to the aforementioned requirements, as well as general compliance to the spirit of the rules.  The decision of the Inliner tech committee will be final on all class placements.
  13. Each car entered will be required to have a safety belt for the driver.  Helmets will also be required for all classes other than the stock classes.  All open cars are required to have roll bars.  Steering mechanism, brake systems and general construction of cars will be checked visually by the tech committee.  All cars must also pass safety inspection at sanctioned drag strips.
  14. Immediately after making a record run, a car will be required to drive to the Inline inspection area to be checked for compliance with class rules and be re-weighed.  Refusal to do so will result in loss of record.
  15. General inquiries and assistance in interpreting regulations and/or classifying vehicles and submission of record setting information, to include an official weight slip and time slip marked with class record set, should be sent to the Inliners Racing Director.

DEFINITION OF TERMS

Early:              The early (1950s style) cross flow 12 port heads manufactured for 216-235-261 Chevrolet engines and 270-302 GMC engines.  Includes:  Wayne Chevrolet, Wayne GMC, Horning-Fisher GMC, Fisher GMC, Howard GMC, Algon GMC, Skinner GMC, others or reproductions of aforementioned heads; aluminum or cast iron.

Early Engine:    Domestic and foreign engines generally designed and produced before 1960 by major automotive manufacturers.  Aftermarket blocks are not allowed and will be classified as a Late Engine.  Approved engines are listed in Table 1.  Engines can be added to the list by petitioning the Drag Race Rules Committee.

Late Engine:     Domestic and foreign engines generally designed and produced starting in the early 1960’s by major automotive manufacturers.  Aftermarket blocks and heads based on these engines are also included.  Approved engines are listed in Table 2.  Engines can be added to the list by petitioning the Drag Race Rules Committee.

Late:                  Special late 12 port heads such as Duggan or special 12 port heads – fabricated or hybrid.

Contemporary Engine:         Domestic and foreign engines generally designed and produced starting in the 1980’s and generally characterized by 4 valves per cylinder by major automotive manufacturers and not designated as Early or Late engines.

Nostalgia Classes:   Body styles generally associated with Early and Late engines.  Chassis must be front engine/rear drive.  Electronic and crank trigger ignition systems are allowed.

Power Adders:

Stock Head:      Any cylinder head which was original equipment manufactured (OEM) for a particular engine

Aftermarket Head:    Any aftermarket, export, fabricated or hybrid - original equipment designed cylinder head installed on a block for which it was not fit (e.g., Chevy small block V-8 cylinder head installed on a 153 cu. in. Chevy 4 cylinder block)

“S” Head:           Stock head, any modification

“A” Head:          Aftermarket and contemporary head, any modification

Flathead:           Valves in block (abbreviated in the tables below as “FH”)

F-head:              One valve in head, one valve in block

OHV:                  Overhead valve

SOHC:               Single overhead cam

DOHC:              Dual overhead cam

CLASSES

Stock/Super Stock

 

Stock (Early Engine)                                  Super Stock (Late Engine)

Class A/S – 0 to 22.5 lbs/bhp                      Class SS/A – 0 to 22.5 lbs/bhp
Class B/S – 22.6 to 28.5 lbs/bhp                Class SS/B – 22.6 to 28.5 lbs/bhp
Class C/S – 28.6 and up lbs/bhp                Class SS/C – 28.6 and up lbs/bhp
Class D/S – 4 cyl stock head                      Class SS/D – 4 cyl stock head

  1. Must run service station pump gas, with no octane boosters or additives.
  2. Each car’s engine must be of the specific type and model as the car in which it is being run.
  3. Generators and fans must be connected and in operation.
  4. Cylinders may be bored a maximum of .060 of an inch larger than the standard bore size.
  5. Dual exhaust pipes with mufflers will be permitted.
  6. Cast iron headers such as Fentons, Nicsons or split manifold type are permissible but must be routed through mufflers.  No tube-type headers will be allowed.
  7. Cars must run full upholstery and may not be gutted.
  8. Convertibles must run with the top up and may be chopped a maximum of four inches.
  9. Drag slicks will not be allowed in this class.
  10. Moderately customized cars may run in this class at the discretion of the tech committee, provided the engine meets all the requirements of the stock car section.
  11. Engine modifications other than standard production equipment will automatically advance car into the gas coupe/sedan class.
  12. Cars entered in this class are subject to engine displacement and other protests as outlined in general regulations.

 

#1 Gas Coupe/Sedan Early Engine

 

Class “A” and “AA” - 5 lbs/cu. in. minimum
“S” Head
“A” Head
Class “B” and “BB” - 7.6 lbs/cu. in. minimum
“S” Head
“A” Head
Class “C” and “CC” - 10.1 lbs/cu. in. minimum
“S” Head
“A” Head
Class “D” and “DD” - 12.1 lbs/cu. in. minimum
“S” Head
“A” Head
Class “E” and “EE” - 5 lbs/cu. in. minimum, for 4 cyl and flathead 6 cyl
“S” Head
“A” Head

  1. Must run gasoline.  Octane boosters or racing gas is permitted.
  2. Must have a coupe or sedan body produced by an automotive manufacturer.  Aftermarket fiberglass or plastic bodies are permitted.  Top may be chopped a maximum of four inches.  Must have stock shaped hood, fenders and grill.
  3. Wipers optional.
  4. Exhaust system optional.
  5. Headlights need not work.
  6. Plexiglas and lexan windows OK, window controls optional
  7. One tail light required for night racing.
  8. Interior may not be gutted.  Must have minimum upholstery.
  9. Open headers permitted for racing.
  10. Must have full transmission.  Quick change rear ends permitted.
  11. Maximum 10% engine setback.
  12. Drag slicks are allowed.  Wheel wells must be radiused for tires.
  13. Nitrous oxide not permitted.
  14. Double letter, blower and turbo.

 

#1A Gas Coupe/Sedan Late Engine

 

Class “A” and “AA” - 5 lbs/cu. in. minimum
“S” Head
“A” Head
Class “B” and “BB” - 7.6 lbs/cu. in. minimum
“S” Head
“A” Head
Class “C” and “CC” - 10.1 lbs/cu. in. minimum
“S” Head
“A” Head
Class “D” and “DD” - 12.1 lbs/cu. in. minimum
“S” Head
“A” Head
Class “E” and “EE” - 5 lbs/cu. in. minimum, for 4 cyl and flathead 6 cyl
“S” Head
“A” Head

  1. Must run gasoline.  Octane boosters or racing gas is permitted.
  2. Must have a coupe or sedan body produced by an automotive manufacturer.  Aftermarket fiberglass or plastic bodies are permitted.  Top may be chopped a maximum of four inches.  Must have stock shaped hood, fenders and grill.
  3. Wipers optional.
  4. Exhaust system optional.
  5. Headlights need not work.
  6. Plexiglas and lexan windows OK, window controls optional
  7. One tail light required for night racing.
  8. Interior may not be gutted.  Must have minimum upholstery.
  9. Open headers permitted for racing.
  10. Must have full transmission.  Quick change rear ends permitted.
  11. Maximum 10% engine setback.
  12. Drag slicks are allowed.  Wheel wells must be radiused for tires.
  13. Nitrous oxide not permitted.
  14. Double letter, blower and turbo.

 

#2 Altered Coupe/Sedan Early Engine

 

Class “A” and “AA” - 4 lbs/cu. in. minimum
“S” Head
“A” Head
Class “B” and “BB” - 6 lbs/cu. in. minimum
“S” Head
“A” Head
Class “C” and “CC” - 8 lbs/cu. in. minimum
“S” Head
“A” Head
Class “D” and “DD” - 10 lbs/cu. in. minimum
“S” Head
“A” Head
Class “E” and “EE” - 4 lbs/cu. in. minimum, for 4 cyl and flathead 6 cyl
“S” Head
“A” Head

  1. May run gas, methanol, aviation gas, racing gas, additives OK.
  2. Must have coupe or sedan body, fenders and upholstery optional, plastic, fiberglass, carbonfiber bodies OK.
  3. Original size grill shell required, radiator optional.
  4. Tops may be chopped and/or bodies channeled, but not to exceed a maximum of six inches total height reduction.
  5. May use standard or automatic trans, quick change or locked rear ends OK.
  6. Maximum 25% engine set back, measured from center of spindle to #1 spark plug.
  7. Drag slicks permitted.
  8. Nitrous oxide not permitted.
  9. Double letter, blower and turbo.

 

#2A Altered Coupe/Sedan Late Engine

 

Class “A” and “AA” - 4 lbs/cu. in. minimum
“S” Head
“A” Head
Class “B” and “BB” - 6 lbs/cu. in. minimum
“S” Head
“A” Head
Class “C” and “CC” - 8 lbs/cu. in. minimum
“S” Head
“A” Head
Class “D” and “DD” - 10 lbs/cu. in. minimum
“S” Head
“A” Head
Class “E” and “EE” - 4 lbs/cu. in. minimum, for 4 cyl and flathead 6 cyl
“S” Head
“A” Head

  1. May run gas, methanol, aviation gas, racing gas, additives OK.
  2. Must have coupe or sedan body, fenders and upholstery optional, plastic, fiberglass, carbonfiber bodies OK.
  3. Original size grill shell required, radiator optional.
  4. Tops may be chopped and/or bodies channeled, but not to exceed a maximum of six inches total height reduction.
  5. May use standard or automatic trans, quick change or locked rear ends OK.
  6. Maximum 25% engine set back, measured from center of spindle to #1 spark plug.
  7. Drag slicks permitted.
  8. Nitrous oxide not permitted.
  9. Double letter, blower and turbo.

 

#3 Street Roadster Early Engine

 

Class “A” and “AA” – 5.0 - 7.5 lbs/cu. in.
“S” Head
“A” Head
Class “B” and “BB” - 7.6 - 10 lbs/cu. in.
“S” Head
“A” Head
Class “C” and “CC” - 10.1 lbs/cu. in. and up
“S” Head
“A” Head
Class “D” and “DD” – 5 lbs/cu. in. and up, for 4 cyl and flathead 6 cyl
“S” Head
“A” Head

  1. Must be equipped with a roadster type body, cannot be altered in either height, width, length or contour.
  2. May run pump gas, methanol, aviation gas, additives OK.
  3. Must have all equipment to be street legal, all four fenders and head lights required.  Windshield may be removed for competition at owner’s option.
  4. Must have street legal exhaust, open exhaust permitted for competition.
  5. Must be equipped with production type radiator shell, must be as large in frontal area as original grill or shell, mounted in conventional location.
  6. Interior may not be gutted, must run full upholstery.
  7. No relocation of engine allowed.
  8. Drag slicks allowed in this class.
  9. Open touring and roadster pickups may run as street roadsters provided they meet the class requirements.  Pickup beds must be of standard height and width and a minimum of 36” in length.
  10. All cars must have an approved roll bar.
  11. Nitrous oxide not allowed.
  12. Double letter, blower and turbo.

 

#3A Street Roadster Late Engine

 

Class “A” and “AA” – 5.0 - 7.5 lbs/cu. in.
“S” Head
“A” Head
Class “B” and “BB” - 7.6 - 10 lbs/cu. in.
“S” Head
“A” Head
Class “C” and “CC” - 10.1 lbs/cu. in. and up
“S” Head
“A” Head
Class “D” and “DD” – 5 lbs/cu. in. and up, for 4 cyl and flathead 6 cyl
“S” Head
“A” Head

  1. Must be equipped with a roadster type body, cannot be altered in either height, width, length or contour.
  2. May run pump gas, methanol, aviation gas, additives OK.
  3. Must have all equipment to be street legal, all four fenders and head lights required.  Windshield may be removed for competition at owner’s option.
  4. Must have street legal exhaust, open exhaust permitted for competition.
  5. Must be equipped with production type radiator shell, must be as large in frontal area as original grill or shell, mounted in conventional location.
  6. Interior may not be gutted, must run full upholstery.
  7. No relocation of engine allowed.
  8. Drag slicks allowed in this class.
  9. Open touring and roadster pickups may run as street roadsters provided they meet the class requirements.  Pickup beds must be of standard height and width and a minimum of 36” in length.
  10. All cars must have an approved roll bar, 13.49 and lower.
  11. Nitrous oxide not allowed.
  12. Double letter, blower and turbo.

 

#4 Roadster Early Engine

 

Class “A” and “AA” – 4.0 - 5.9 lbs/cu. in.
“S” Head
“A” Head
Class “B” and “BB” – 6.0 - 7.9 lbs/cu. in.
“S” Head
“A” Head
Class “C” and “CC” – 8.0 lbs/cu. in. and up
“S” Head
“A” Head
Class “D” and “DD” – 4.0 lbs/cu. in. and up, for 4 cyl and flathead 6 cyl
“S” Head
“A” Head

  1. May run pump gas, methanol, aviation gas, racing gas, additives OK.
  2. Must be equipped with a roadster-type body, plastic, fiberglass, carbonfiber or composite, must have unaltered height, width, length or contour.
  3. Must be equipped with a production-type radiator shell, which must be as large in area as original grill or shell, mounted in conventional forward location.
  4. Street equipment and upholstery optional.
  5. May run standard or automatic transmission, quick change or locked rear ends OK.
  6. Maximum engine setback 25%, measured from C/L of spindle to #1 spark plug.
  7. Drag slicks permitted in this class.
  8. Open touring and roadster pickups may run as roadsters provided they meet the class requirements.  Pickup beds must be of standard height and a minimum of 36” in length.
  9. All cars in this class must have an approved roll bar.
  10. Nitrous oxide not allowed.
  11. Double letter, blower and turbo.

 

#4A Roadster Late Engine

 

Class “A” and “AA” – 4.0 - 5.9 lbs/cu. in.
“S” Head
“A” Head
Class “B” and “BB” – 6.0 - 7.9 lbs/cu. in.
“S” Head
“A” Head
Class “C” and “CC” – 8.0 lbs/cu. in. and up
“S” Head
“A” Head
Class “D” and “DD” – 4.0 lbs/cu. in. and up, for 4 cyl and flathead 6 cyl
“S” Head
“A” Head

 

#5 Dragster Early Engine

            T/D:                Any head/fuel blower/turbo open
A/D-A:            Nitro (any head)
B/D-S:            Nitro/stock head
C/D-S:            Gas/alky (stock head)
C/D-A:            Gas/alky
D/D-S:            280 cu. in. gas/alky (stock head)
E/D-S:            Gas/alky
E/D-S:            Nitro
E/D-A:            Gas/Alky
E/D-A:            Nitro
E/D:                4 cylinder and Flathead 6 cylinder

#6 Dragster Late Engine

            T/D:                Any head/fuel blower/turbo # of engines
A/D-A:            Nitro (any head)
B/D-S:            Nitro/stock head
C/D-S:            Gas/alky (stock head)
C/D-A:            Gas/alky
D/D-S:            260 cu. in. gas/alky (stock head)
E/D-S:            Gas/alky
E/D-S:            Nitro
E/D-A:            Gas/alky
E/D-A:            Nitro
E/D:                4 cylinder only

#7 Fuel Altered Nitrous Oxide Class

Use altered coupe/sedan rules and weight breaks

A/FA:        4 lbs/cu. in. min.
B/FA:       6 lbs/cu. in. min.
C/FA:       8 lbs/cu. in. min.
D/FA:       10 lbs/cu. in. min.
E/FA:        4 lbs/cu. in. min. (see note #1 below)

  1. 4 and 6 cylinder stock and Flathead.
  2. May run nitrous with gas or alky.
  3. May run nitro with gas or alky.
  4. Any induction system legal.

 

RULES COMMITTEE

Harry Blecha, #661 (Chair/Racing Director)
Bob Corbett, #1654
Jim Hawk, II, #1339
Ray Hedstrom, #5
Greg Koesel, #3261
Larry Page, Jr., #3220
Leo Santucci, #587
Walt Skoczylas, #722
Cliff Tibbetts, #3482

 

 

Refer to appropriate sources for Land Speed Racing Rules:
www.scta-bni.org
www.ecta-lsr.com
www.saltflats.com
www.dlra.org.au (Australia)

 


Table 1  Early Engines

Manufacturer

Cubic Inches

Year(s)

Valve Layout

Buick

248, 263, 320

thru 1953

OHV

Chevy

216, 235, 261

thru 1962

OHV

Chrysler

250, 265, 323

thru 1954

FH

DeSoto

236, 250

thru 1954

FH

Dodge

230

thru 1959

FH

Ford

Model A, B, C, 226

thru 1951

FH

Ford

215, 223

thru 1961

OHV

GMC

228, 236, 248, 270, 302

thru 1962

OHV

Hudson

202, 232, 254, 262, 308

thru 1956

FH

Nash/Rambler

172, 184, 196

thru 1955

FH

Nash/Rambler

196, 235, 253

thru 1958

OHV

Olds

257

thru 1950

FH

Packard

288, 327, 356, 359

thru 1954

FH

Plymouth

218, 230

thru 1959

FH

Pontiac

239, 248, 268

thru 1954

FH

Studebaker

169, 185, 245

thru 1958

FH

Willys/Jeep

134, 148, 161

thru 1958

FH

Willys/Jeep

134, 161, 226

thru 1958

F-head

Table 2  Late Engines

Manufacturer

Cubic Inches

Year(s)

Valve Layout

AMC

232, 258

starting 1963

OHV

Chevy

194, 230, 250 292

starting 1963

OHV

Ford

144, 170, 240, 300

starting 1960

OHV

Jeep

230

1963-1967

OHC

Mopar

170, 225

starting 1960

OHV

Pontiac

195

starting 1961

OHV

Pontiac

215

starting 1964

OHV

Pontiac

230, 250

Starting 1966

SOHC

Studebaker

170

starting 1961

OHV

 

 

 

 

 

 

 

 

racing rules (MASTER)
January 8, 2009