Clarification for new body requirements
Beginning January 1, 2014, Jr. Dragster bodies must conform to the
Body and cowl must be constructed of aluminum, fiberglass, or
carbon fiber and extend forward to foot-box bulkhead. Driver
compartment, frame structure, roll cage, and body must be designed
to prevent driver's body or limbs from making contact with wheels,
tires, exhaust system, or track surface. Any portion of the body
side panels that extend upward into the driver's line of sight must
be clear and permit an unobstructed horizontal view for a minimum
of 180 degrees. Body may not cover top of engine, wheels, or tires.
Front overhang not to exceed 15 inches, measured from centerline of
front spindle to forwardmost point of car.
To clarify this rule, the following guidelines should be used to
determine if your car meets the new rule.
• This rule only pertains to the body. Any roll bar padding and/or
head surround material that has been added to the car beyond the
rulebook requirements is acceptable.
• Windows may be placed in the body side panels in order for the
car to conform to this rule.
• If the driver can see over the top of the side panels, there is
no need to modify the body side panels.
Thank you everyone for your input as we hope that this will help
the class become a more exciting one. We have made a few revisions
and clarifications to the rules and these will be final for
TEAM Z MOTORSPORTS & HOLBROOK RACING ENGINES MOTOR CITY MUSCLE
Updated on 1/15/14 for 2014
All Motor -1/4 Mile - .400
Pro Tree - 16 Car Qualified Field - Pro Ladder
Small Block Chevy, Ford, Mopar minimum weight 3000 pounds-
Maximum Cubic Inch of 440.
Big Block Chevy, Ford, Mopar minimum weight 3400 pounds- Maximum
Cubic Inch of 565.
All Motors will be P/G for accuracy. (Any infraction (CHEATING) will
result in immediate disqualification from series)
OEM STYLE means standard port and valve layout front to rear,
and port height within reason of understanding what commercially is
available for conventional heads. This definition will be
subjective under TECH DISCRETION.
Big Block Chevy, Mopar, Ford, with conventional OEM style
No hybrid OEM Style racing heads with high ports ie - no SR20
style. Port height limited to ½" off deck, this should allow
normal conventional aftermarket heads such as those from Brodix,
Dart, BMF, AFR, B1, Indy, TFS etc.
Big Block Buick, Oldsmobile & Pontiac with conventional OEM
style headsMinimum weight 3300 pounds. No high port heads
such as Tiger, Edelbrock Pro Port. Port height limited
to ½" max off deck. Tech will use discretion when
considering legal heads.
Small Block Chevy, Mopar, Ford, with conventional layout,
in-line valve style heads. Minimum weight 3000 pounds. No
port height limitations. Non inline cylinder heads such
as SB2, Yates Style, may run with 150 pound penalty.
Carburetors: Any 4150 style single
Fuel injection: Single throttle body must
fit within a 4150 carb bolt pattern or, 95mm Round throttle body
ANY commercially, currently available cast aluminum intake
manifold allowed. No external modifications, and manifolds must
have manufacturer identification visible as provided new. Any
design allowed but must fit under the hood.
Auto Transmissions:Any auto trans
allowed. Adapters are permitted. Trans brakes permitted.
Automatic transmission entries run at listed base weights.
Pneumatic, electric, hydraulic, etc. shifters prohibited. Any gear
change must occur from direct action by the driver.
Manual Transmissions: Any style manual
transmission allowed. No limits on clutch style. To
Start this carries a 100 pound penalty and will be revisited as the
Limited to 5" cowl style hood. No forward cut outs in hood
permitted. The 5 inch maximum means anywhere along the
cowl scoop profile, measured against the primary surface of the
hood. No single point of the cowl allowed to be measure more
No aftermarket forward facing hood scoops.
No restrictions on air intake position. ie under the car,
grill area, windshield etc.
Stock factory frame rails required, front to back.
Modifications allowed for clearance only.
May be mini tubbed with narrowed frame rails.
Stock Leaf Spring or Stock Coil Suspension - Deduct 50 pounds
from base weight
Coil over shocks allowed without weight break.
Traction Bars, Cal Tracs, Slide a Link or Torque Arms are
Ladder Bar - Runs at base weight
Bolt in or weld in anti-roll bars allowed.
Front suspension must represent the stock type suspension for
the model car being used. By 'Stock Type' we mean any
custom parts used must mount directly to stock suspension
Cars originally equipped with A-Arms must continue to use A-Arms
on the stock mounting points. Aftermarket A-Arms which
are adjustable are acceptable.
Cars equipped with Struts, must utilize struts in the original
strut towers. Manipulation for proper geometry within the
tower is acceptable.
Bolt on K-Member style cradles for late model cars are
acceptable but must follow the Strut and A-Arm rules.
Coil over front shocks allowed but will negate the 50 pound
weight break for stock springs listed in rear suspension
section. If vehicle was equipped with coil over struts
OEM, then the weight break for stock rear springs will still
No Spindle mount
Tires limited to 275 Radial or 9x26, 9x28, 9x29, 9x29.5 or 9x30
slicks only. (Radial sidewalls permitted)
No Lexan windows allowed. Must be OEM glass.
Lower Engine Containment Device Required:
Oil Retention Device:
- Device may be custom-built ballistic blanket-style or
metal-style (I.e., bucket) device.
- Metal pan may be no longer than the engine from the front of
crank shaft to the rear of the flywheel.
- Pan must be inside the frame rails and fabricated to retain
- Pan must attach to the frame via conventional fasteners or
- Pan must be a minimum of 3 inches above ground.
Diapers: They do not have to be SFI rated.
Rules are subject to change at
MUST MEET ALL
NHRA RULES INCLUDING LICENSE AND CERTIFICATION