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22,719 Posts
Am I missing Pro Mod on that flyer somewhere?

KBX Performance
1,686 Posts
Discussion Starter #8 (Edited)
MODIFIED STREET is going to be call MODIFIED STREET/ 275 and it is 1500 TO WIN (based on 16 cars) $100 entry fee

803 Posts
MODIFIED STREET is going to be call MODIFIED STREET/ 275 and it is 1500 TO WIN (based on 16 cars) $100 entry fee
So we can come with the same Combo as the last race in HSV?

Wrong Hole Racing
3,580 Posts

This is an 1/8 mile heads-up class run on a .400 pro tree with a pro ladder. Super Street is a qualified 32 car field. Courtesy staging and auto-start is in effect.


The car must retain its original appearance, profiles, and dimensions. Factory roof and quarter panels must be used. Aftermarket fiberglass 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 stretched. Aftermarket wings and spoilers are permitted. Complete stock appearing front and rear bumpers are required. Forward facing hood scoops/ turbo or supercharger inlets are permitted.


Stock appearing dashboard & door panels required. Aftermarket driver seat is permitted. Factory floor pan on driver and passenger side required. Bare inside frame of car cannot be exposed. Aftermarket steering column is permitted.

Windshield / Windows

OEM glass or Lexan windows are permitted


Complete stock chassis and frame rails must be retained. 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). Mini tubs are allowed. Rear frame rails may be notched for clearance. Factory wheelbase must be maintained. Chassis must meet current SFI requirement for speed & E.T. (25.2, 25.3, or 25.5)


Stock style suspension or ladder bar cars only (See weights below for penalty for aftermarket suspension). Aftermarket four links are prohibited on all cars. Aftermarket direct replacement components such as: front control arms, rear control arms, front coil over shocks, struts, and rear coil over shocks are permitted. Aftermarket rack and pinion steering allowed. Rear leaf springs, coil 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.


• Small Blocks are allowed any deck height.
• GM Big Blocks are limited to a 10.2 deck height, 4.84 bore spacing.
• Ford Big Blocks are limited to a 10.3 deck height, 4.900 bore spacing.
• Mopar Big Blocks are limited to a 10.7 deck height.
• Maximum displacement for all big blocks – 640ci.


Single turbocharger limited to 88 mm maximum. Turbocharger size will be verified by measuring the housing bore at the leading edge of the compressor wheel. 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. Stepped or notched compressor wheels prohibited. Large frame turbos are prohibited. Turbos utilizing a turbine housing that bolts to the center section / cartridge are prohibited. Any type of air-to-air or water-to-air intercooler permitted. Turbochargers with nitrous oxide are prohibited except on 2-rotor, 4 cylinder, and inline 6 cylinder engines. Crew may be asked to remove compressor covers for turbo inspection and size verification.


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. Roots superchargers are limited to a 10-71. Centrifugal superchargers are permitted. Screw superchargers are not permitted. Superchargers with nitrous oxide are prohibited except on 2-rotor, 4 cylinder, and inline 6 cylinder engines. Centrifugal superchargers limited to: YSI, F1A, F1C, F1R, XI, or smaller.

Nitrous Oxide

Small block is permitted to run any type multi-stage nitrous systems. Big blocks are limited to a single stage nitrous system (A single stage fogger is permitted. If using a single plate then you are limited to 1 fuel solenoid, 1 nitrous solenoid, and 1 purge solenoid. Purge must exit engine compartment for all nitrous cars.


Any factory style automatic transmission allowed. Bruno-Lenco / Converter Drive transmissions are prohibited. Clutchless manual transmission and clutch assisted manual transmissions are permitted on naturally aspirated combinations only. Electric shifters or air shifters are permitted.


Small Block combinations may run any type induction. Big Block limited to N/A or Nitrous only. Sheetmetal intakes, tunnel ram style intakes, and dual carburetors are permitted.

Oiling System

Dry sumps 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, methanol, or E85 is permitted. Nitromethane in any percentage is prohibited.

Street Equipment

Functional headlights, taillights and brake lights required. Headlights, brake lights, marker lights, etc must be on car and not removed for any reason. All vehicles may be towed to the staging lanes and back from their passes.


All cars must compete on a Drag Radial type tire with the following sidewall designation: 275/60/15.

Minimum Base Weights

All minimum weights include the driver.
Naturally Aspirated small block - 2600 lbs
Naturally Aspirated big block with conventional head - 2900 lbs
Naturally Aspirated big block with big chief style head - 3000 lbs
Nitrous Small Block - 3000 lbs
Nitrous Big Block 3300 lbs – Maximum: 1 Nitrous System
Single YSI / F1A/6-71 Supercharger Small Block - 3100 lbs
Single F1C/8-71 Supercharger Small Block - 3200 lbs
Single F1R / Xi/10-71 Supercharger Small Block - 3300 lbs
Single 76mm Turbocharger Small Block - 3000 lbs.
Single 80mm Turbocharger Small Block - 3100 lbs.
Single 85mm Turbocharger Small Block - 3150 lbs.
Single 88mm Turbocharger Small Block - 3200 lbs.
Any turbo with a billet compressor wheel add 100 lb.
Any turbocharger falling between these compressor diameters will run at the next largest compressor weight. i.e., 82mm runs at 85mm weight.
* Small Blocks with single stage nitrous system: deduct 50 lbs
* Small Blocks (NOS only) with 23 degree Chevy heads, 20 degree Ford heads, and 18 degree Mopar heads: deduct 100 lbs.
* Small Block (NOS only) non-inline valve head with more than 2 nitrous kits: add 100 lbs
* Non-Intercooled, gasoline fueled boosted cars: deduct 50 lbs.
* Aftermarket rear suspension (Ladder bar): add 50 lbs.
* V-6 Turbocharged/Supercharged/Nitrous combos will deduct 200 lbs from base weight

1,718 Posts
What are the weights for Limited Street?
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