NOSTALGIA COMBO RULES
Format-
- 1/8th Mile
- .500 Full Tree
- .25 Second Indexes w/ Breakout
- Chip Draw for Ladder Positions Before 1st Round
- Footbrake Only
Body-
- Any 1955-1985 American Production Makes and Models available with factory production V8 engines
- Must be rear wheel drive
- Must meet all safety rules for ET and speed car will be running
- Cars must retain factory steel roof and quarter panels
- Must retain original body lines except minimal trimming for tire clearance
- Hoods required. Scoops permitted if period correct and meet the aesthetic of the class. No forward-facing snorkel or "prostock" scoops. Entire induction system must be covered, except for entries using period correct mechanical fuel injection. (i.e. Hilborn Injection)
- Lightweight fenders, hood, doors, decklid, and bumpers allowed
- Lexan and other NHRA approved lightweight windows permitted
- Stock appearing bumpers required and grilles required
- No spoilers or rear wing allowed unless factory available option
- Inner fenders must be retained with trimming for header clearance permitted
- Firewall must be in factory location. (Shaving and block off plates permitted)
- Full stock floor pans in stock location required with modifications for fuel cell and clearances permitted
- Wheel tubs permitted
- Fuel Cells permitted and must have a bulkhead of minimum .032" aluminum or .024" steel separating the driver compartment from the cell
- Cars must be completely painted or wrapped. Sponsor decals and lettering permitted on painted panels
Interior-
- Must have full factory seating, upholstery, and carpeting (including door panels and head liners)
- Aftermarket upholstered bucket seats permitted. Must have 2 front seats
- Full dashboard mandatory. Aftermarket gauges permitted
- Rear seat may be removed when roll bar/cage is installed. Area must be carpeted or upholstered equivalent to factory specifications (no bare paneling)
Frame-
- Must have stock frame rails. Bracing and Notching permitted
Front Suspension:
- Factory configuration front suspension required. Aftermarket tubular front control arms permitted
- Front coil-over shocks prohibited unless OEM equipped
- Steering components must be stock configuration. Rack and Pinion steering only permitted on OEM equipped models.
Rear Suspension-
- Stock or Aftermarket Suspension Permitted
-Wheelie Bars permitted
Brakes-
- Must have working brakes on all 4 axles
- Aftermarket race brakes and master cylinders permitted
- Master cylinder must be in stock location
- Front line lock permitted
Engine-
- Engine must be era correct small block or big block V8 only (pre-1985)
- Engine must correspond with manufacturer of chassis (i.e. Ford in a Ford, Pontiac in a Pontiac)
- Any internal engine modification permitted
- No dry sump oil systems
- Aftermarket cast iron or aluminum heads permitted but must appear as original design of era of engine. Any internal modifications permitted. Any valvetrain permitted
- Commercially available cast or aluminum intake manifolds required. Sheet Metal intakes only permitted for 6.25 or faster (NSS FX)
- Carbureted Only. Mechanical Injection permitted for 6.25 or faster (NSS FX). No Electronic Fuel Injection
- Adjustable restrictor plates permitted. Pneumatic or Electronic Throttle Stops Prohibited
- Electric water pumps and cooling fans permitted
- Stock location cam gear driven distributor required
- Radiator required in stock location
- Engine diaper or oil retention pan highly encouraged
- No power adders, must be naturally aspirated
Exhaust-
- Open headers, collector mufflers or full exhaust permitted. Exhaust must exit behind driver, no fender-exit headers
Transmission-
*Manual Transmissions:
- OEM or aftermarket manual transmissions with 4 forward gears maximum
- Clutchless transmissions prohibited
- All launches and shifts must be made manually by feet and hands
- Launch rev limiter permitted on manual transmission entries only
*Automatic Transmissions:
- Any stock or aftermarket version of era correct OEM produced automatic transmissions permitted
- Transbrakes prohibited
(If car is equipped with a transbrake solenoid and needs the solenoid to engage to go into reverse, a positive locking toggle switch must be installed and visible by tech officials. No momentary switches or buttons)
- All shifts must be made manually. (no pneumatic or electric shifters)
- Launch rev limiters prohibited on automatic transmission entries
Electrical-
- Battery may be relocated to trunk/rear cargo area but must have a working shut off switch
- Charging system optional
- Stock or aftermarket ignition systems permitted. Programmable ignitions are prohibited.
- Throttle stops, transbrakes, delay boxes, traction control, timers, and all other programmable starting line and down track electronics are prohibited.
Fuel:
- Permitted Fuels: Gasoline, E85 and Alcohol
Wheels and Tires:
- Rear tires limited to a 33x10.5W
- Front tires limited to 26x4.5 front runner. Spindle mount wheels prohibited
- Tires must not excessively protrude from edges of rear fenders, or excessively tuck into wheel tubs
Indexes:
- Racer must determine .25 second index and write it on their tech card and car windows
- 5.75, 6.00, 6.25, 6.50, 6.75, 7.00, 7.25, 7.50, 7.75, 8.00, 8.25, 8.50, 8.75, 9.00
- Index can be changed by alerting the tower before 1st round of Eliminations
- Once 1st round of eliminations starts, your index is locked