This Page Last Updated:
November 27, 2017
Entry Fee: $200
|The Limited class rules are
as follows. If you have any questions or
concerns please contact the
TeX275 first. We are trying to keep the class
fair and consistent for all parties which mean
changes will be made for parity throughout the
year. Our intent is to keep the cost down and
make changes that require expensive
modifications/changes to keep running with us.
This is a 1/8 mile heads-up class run on a
.400 pro tree. TeX275 is an all run field ran
on pro ladder. In
the event of an odd number field the bye run
will go to the #1 qualifier Courtesy staging
is in effect.
All NHRA/IHRA and Local Track Safety rules
apply for driver and car, including the use of
retention device or engine diaper.
The car must retain its original appearance,
profiles, and dimensions. Factory roof and
must be used. Aftermarket fiberglass and/or
carbon fiber replacement panels are limited to
fenders, doors, deck-lids, and bumpers only.
All front ends must be of factory dimensions
and cannot be
stretched. Aftermarket wings and spoilers are
permitted. Complete stock appearing front and
bumpers are required. A hood must be used:
scoop or hood must cover the entire induction
Forward facing hood scoops/ turbo or
supercharger inlets are permitted. Hood scoop
may not be taller
than 9 inches measured from the bottom of the
windshield. Beam trippers, extenders are
model years before 1978 will receive a -50lb
Factory appearing dashboard, door panels, and
driver seat is required. Full Carpet is
floorboards including transmission tunnel.
Factory floor pan on driver and passenger side
Transmission tunnel maybe removable and must
be metal. Bare inside frame of car cannot be
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
Aftermarket bolt-on replacement front
K-members/sub frames are allowed (if front
shocks bolt to Kmember
then they must be in factory location). Mini
tubs are allowed. Rear frame rails may be
for clearance and must be in the factory
location. Factory wheelbase must be
maintained. (+ or – 1 inch)
Maximum displacement for all engines is 600ci.
*Add 3lbs per ci over 588 on big blocks. Small
are allowed any deck height but must retain
stock bore spacing. Big block allowed the
heights but must retain stock bore spacing. GM
Big Blocks are limited to a 10.2 deck height.
Blocks are limited to a 10.3 deck height.
Mopar Big Blocks are limited to a 10.7 deck
Single turbocharger limited to GT47or 55 and
S400 (mid frame) chassis only. Cast and Billet
76mm compressor inducer cannot exceed 76.6mm
and the compressor exducer cannot
exceed 116 mm
- 76.5 mm compressor wheels must be "as-cast"
- Turbine wheel must not exceed 96.2 mm x 88.3
Cast 80mm compressor inducer cannot exceed
80mm and exducer cannot exceed 133mm
80mm wheel must be “as-cast”
Turbine wheel must not exceed GT55 (102mm
inducer and 111mm exducer)
All turbochargers must be manufactured from
factory. Turbochargers w/nitrous-oxide
No hybrid turbochargers. All turbochargers
must have a model and serial number.
All turbochargers will have the compressor
cover removed for tech inspection.
Cast inline valve head only.
Cog or gear driven superchargers are
permitted, must meet all factory inlet,
outlet, and internal housing
Cast inline valve head only.
Small blocks and Big blocks are limited to a
single-stage fogger or plate system. A single
nitrous solenoids and 2 fuel solenoids) with
3/16th lines and solenoids orifice limited to
.178. Fogger pill
are limited to .40 for BB and .44 for SB
combinations unless otherwise specified..
plates are limited to (1 fuel solenoid, 1
nitrous solenoid), solenoids are limited to
.375 orifice. All single
stage plates are limited to a .125 jet on BB
combinations and .140 on SB Combinations.
Cross Bar plates
limited to two .82 jets. All nitrous systems
are limited to a -6 line. 1 purge solenoid,
purge must exit
No Raised Runner Heads allowed. A Raised
Runner Head is defined as a head where the
port is more than .550 from deck. Floor is
actual surface of continuous flow.
Big blocks are allowed a single bottle.
EFI is allowed on NOS combinations.
No Cold Nitrous.
All jets must have a round orifice.
No WON plates
No water injection
Any factory style automatic transmission
allowed. OEM factory style manual transmission
Bruno-Lenco transmissions are prohibited.
Aftermarket clutch less manual transmission
assisted manual transmissions are permitted on
naturally aspirated combinations only.
or air shifters are permitted. Lock up
transmissions are limited to SB NOS combos
All cars are limited to a dedicated single
opening cast intake and a single carb or a
single 4150 or 4500
series throttle body. (4 blade, dual blade or
single blade throttle body permitted).Throttle
body must bolt
directly to intake manifold (No Adapters) in
stock bolt location on 4150/4500 flange.
Dry sump oiling systems are permitted on all
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, E85 and M1 only are permitted. Water
or meth injection prohibited.
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, ladder bar and four link
suspension are permitted on all cars.
Aftermarket direct replacement
components such as: front control arms, rear
control arms, front coil over shocks, and rear
shocks are permitted. Aftermarket rack and
pinion steering allowed. Rear leaf springs,
and coil-overs may be moved to accommodate
tire clearance, and do not need to be mounted
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
from factory with it. Upper and Lower control
arms must be mounted in the factory chassis
Aftermarket rear suspension COPO Chevy and
Drag Pack permitted on the new Camaro and
Challengers or torque arm on late model GTO
All cars must compete on a Drag Radial type
tire with the following sidewall designation
275/60/15 or a
28.0” x 10.5” slick, no “W” tires permitted.
All minimum weights include the driver
All small block weights are based on a
standard deck height.
Naturally Aspirated (small block) 2500lbs
*Non-RR 23 degree Chevy heads, 20 degree Ford
heads, and 18 degree Mopar deduct 100lbs
Naturally Aspirated (big block) 2700lbs
* Small Blocks with 23 degree Chevy heads, 20
degree Ford heads, and 18 degree Mopar heads
* Small Block 23 degree raised runner head
* Small Block 18-10 degree valve angle inline
head and LS 15-11 degree valve angle head
* Small Block NOS is permitted a lock up
transmission with a +100lb penalty
* Nitrous SB2/SC1 head combinations 3000lbs
and limited to .40jet.
* Small block is 455ci or smaller. *Add 3lbs
per ci over 455 on small blocks.
* Buick/Olds/Pontiac Nitrous combos will be
3150lbs and not to exceed 588 cu inches.
*Nitrous Big Block single stage fogger
standard/tall deck height and conventional
F1A - 91 series - 3050 (-94 series add 150
F1C- 91 series – 3100
YSI – 3000 (deduct 50 for cast wheel) chg.
* Belt driven centrifugal superchargers:
76 mm – 3000lbs
76 mm Billet 3150lbs
80 mm – 3150lbs
GT5580 mm – 3250lbs
RR and other than stock valve angle heads
including Chevy LS based heads +100lbs
No Billet 80mm . No Reducers on turbo or
supercharged combinations. All turbochargers
frame only) and superchargers must be as
manufactured from factory.
* Non-Intercooled boosted cars on gasoline:
Big Block Chevy Cylinder Head:
Conventional Heads as referenced to the
original Mark IV design. (BBC symmetrical or
design is not defined as conventional for
* Stock port location/Standard port location –
no raised runner
* Floor of port may not be more than .550 from
* No port plates or intake manifold adapter
* 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 –
* Maximum dimension allowable from deck
surface to the top of the intake port will be
no more than
* Heads with “AS CAST” intake port lower than
this dimension will be permitted.
* No welding or epoxy permitted to achieve
* Tech official has final say at the time of
inspection on any issues that may arise
Suggested castings to include the following:
* Billet heads not allowed
∗ CFE/BMF 350 – 405cc Big Block Chevrolet
∗ Chevrolet Factory OEM Iron & Aluminum; OEM
∗ Brodix BB-1, BB-1 OEF1, BB-2, BB-2X, BB-2
Extra, BB-2 Plus, BB-3, BB-3X, SR23
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
∗ 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
∗ 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 #
∗ Air Flow Research 265, 290, 305, 315, 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,
Big Block Mopar
B-1 style cylinder heads only
All cylinder heads must be mass produced with
a part number (no one offs allowed).
Each racer will receive a copy of the rules
with their tech card. Each car will weigh
before and during
qualifying. The winner of each elimination
round will weigh. Failure to do so will
disqualify the car and
All engines are subject to valve angle, port
location, and displacement verification at any
Nitrous limits and turbo size will be verified
on the winner and runner up after each event
random during the event as deemed necessary by
Any rule violation found during tech will
result in forfeiture of winnings and points.
will be distributed to the racers defeated
during the race by the violator.
To protest a racer you must be a racer in the
class competing at that race. To protest a
pill, turbo or
supercharger size: protest fee is $100.00. To
protest engine size using the p&g pump:
protest fee is
$250.00.To protest valve angle: protest fee is
$250.00. To protest engine size with tear
fee is $750.00.Only people allowed during tear
down is Tech, owner and protester. Protester
back and not interfere with tech. NO cameras
or video’s allowed during this process. All
must be paid before final round. Any tear down
will be performed after the finals.
***THE RULES MAY BE ADJUSTED AS NECESSARY IN
EFFORT TO MAINTAIN PARITY***
ALSO: EVENT / RACE INFORMATION