Preliminary 2010 Rules RevisionsI

Intake

All engine combinations are limited to a single 4 barrel carb, with a cast intake manifold, that is available to the general public. The manifold will be ruled either "stock" or "modified" as outlined below. Modified manifolds are subject to a +50# weight adjustment for all engine combos.

***Sheetmetal intakes are not allowed.

***Custom, one off, non-production cast intakes are not allowed.

***Tunnel ram manifolds, cast or sheetmetal, are not allowed.

***Multi carb manifolds of any type, design, or syle are not allowed.

Modified Intake

***Any external modification to a cast manifold will result in a +50# weight adjustment. .....Alterations such as, but not limited to, any welding, adding any type of material, cutting the runners, plenum, or flange area, "splitting" the intake, or any change to "out of the box" external dimensions or finish will result in adding 50#'s to the combination's base weight.

Stock Intake

***Cast manifolds with "stock", "out of the box", external dimensions and finish are not subject to the weight adjustment. The following restrictions also apply:

*Only cast intakes readily available to the general public (through Jeg's, Summit, etc.) are permitted.

*Porting/Polishing and internal modifications to a "Stock" manifold are allowed.

* No welding, epoxy or any type of repair permitted to the exterior. Also, no painting, coating, or bead blasting is permitted to the exterior of manifold, and must retain stock factory finish.

*Flange and/or plenum spacers are allowed but cannot be welded to the manifold (bolt on only). Milling of the carb flange to ease porting will be allowed, however the stock dominator bolt pattern must be retained and used to mount not only the carb spacer, but also the carb. For example, the carb and spacer must be attached to the manifold with the
same studs. If milling, porting, polishing, or any action requires epoxy, or repairs of any type to the external of the manifold it will be deemed "modified". Absolutely no welding! Any welding on the exterior of the manifold will result in the manifold being deemed "modified" and will require the 50# weight adjustment.

*Any manifold that does not conform to all of these requirements will be deemed "modified" and be subject to the 50# weight adjustment.

*Prototype or pre-production manifolds: A pre-production (prototype) manifold that has been advertised to be available in 90 days, for example, to the general public will be considered "stock" when it becomes available to the public via Jeg's, Summit, etc. If a team has access to the "prototype" prior to the release to the general public, then the +50#'s would be accessed. This manifold would be deemed "stock" when the public can buy the same manifold "over the counter" and the +50# weight adjustment would be removed. The much anticipated factory "bolt together" manifolds will be legal if/when they become available to the public under the conditions outlined above. One method that will be utilized to determine if a manifold is legal will be to call Jeg's and other sources to check availability. If it cannot be determined that a "prototype" is truly a pre-production piece, (ie, no ads in National Dragster, PR releases, PRI displays, ads in trade mags, no projected delivery date, etc) then it becomes a custom, one off piece and not legal at any weight.

*A three member committee has been assembled to review/inspect any questionable manifold(s) or in the event of a protest. This committee will consist of Tommy Costales, Ricky McConathy, and Robert Nickens. Every effort will be made to reach a conclusion with a visual inspection at the event. Manifolds will not be removed during an event. If the committee deems it necessary that the manifold must be removed for a thorough inspection, the manifold will be be marked at that time. Points and prize money will be withheld until the inspection process is completed. Removal and presentation of the manifold for inspection will occur at an agreed time and location ASAP following the conclusion of the race. The majority decision of this group will be final. In the event a car owner refuses inspection, the entry will be ineligible to compete at any TPSA event until an inspection is completed by the committee.

Carb

*Stock 4500 Holley flange, 5 3/8" (5.375) bolt pattern, center to center, maximum. *Throttle blades or "Butterflies" limited to 2.250 maximum diameter.

Engines

***Big Block Ford:

*Blocks, either cast iron or aluminum, are limited to 4.900 bore spacing, and 10.322 deck height. The available low deck block is not compatible with A-460 heads and is therefore not allowed.

***All Engine Combinations:

*All engine components are restricted to conventional alloys. Carbon Fiber, Kevlar, ceramics, composites, beryllium, or other exotic materials prohibited.

*Intake & Exhaust pushrods and valve springs are limited to steel. All other materials prohibited.

*Conventional babbit rod and main bearings mandatory; roller bearings limited to cam, cam thrust, and on the rocker arm fulcrum and valve tip.

Ignition

*Ignition boxes limited to one per car.

Nostalgia

*Any chassis constructed prior to 1990 can deduct 50#'s. Body model/type and dimensions must conform to the year chassis was constructed. Verification will be required to claim this deduction.

Body

*Front End length: Distance from center of front spindle to furthest most leading edge of the front end may not exceed 45”. Aftermarket front ends and "splitters" allowed.