[Adger Smith]

They are calling it a "Factory Stock" class and the lift and Vac requirements are what I think is going to be the toughest. The carb might be the next plug in the pipe. I don't think anyone is going to walk away with the class. If they do I bet they are cheating in som area. It has a claimer/swap rule, too.
Here are the engine rules as copied from their website:
ENGINE: Must be stock for the make and model except no 400’s or larger small or big blocks. All engine components including water pumps, distributor, etc., must be strictly stock. Cast piston only, Chevy must use 4 equal valve relief pistons. Aftermarket mini starter, pulleys, harmonic balancer and oil pans okay. Aftermarket power-steering pumps okay. Metric cars may run a 350. NO stroking or de-stroking. Engine must be in stock location. Solid motor and transmission mounts okay. Maximum cranking compression 175 lbs.(ignition off, engine turned over 5 times).
CAMSHAFT, VALVETRAIN, AND CYLINDER HEADS: Hydraulic cam and lifters only. .447 maximum lift. Must maintain 14” of vacuum at 1200 rpm. 1.94 maximum intake valve diameter, 1.50 maximum exhaust valve diameter on Chevrolet engines. Stock size valve springs and stock length pushrods only. Stamped steel 1.5 rockers on Chevy , 1.6 on Ford and Chrysler,
NO roller tips. Open chambered heads only, must be unaltered, O.E.M. NO porting, polishing, or gasket matching allowed. Screw in studs and guide plates ok. 305 engines may use 305 heads(no vortec).
CARBURATION AND FUEL SYSTEM: Holley 4412 2-barrel only. Must be unaltered. Choke plate may be removed. 4412 must be cast into body of carb. Maximum spacer and adapter 1” combined total. Fuel pump must be in stock location for make, NO electric pumps or fuel injection even if factory equipped.
EXHAUST: Stock cast iron exhaust manifolds only. NO Chevy center dump, Corvette, marine, or tubular steel type manifolds.
INTAKE MANIFOLD: Stock unaltered aluminum or cast iron intake only. NO aftermarket or stock high performance or high rise. NO bowties. NO porting, polishing, or gasket matching.
I see a couple of holes, but pretty tight. A lot of No's in there.. HA!
Here are the Claim rules:
CLAIM PROCEDURE RULES:
ENGINE CLAIMING RULES: Any driver in the same race on the lead lap may claim one of the top three finishers immediately after the “A” feature in the tech area.
(A) $500.00 and swap claim on engines.
(B) Claim does not include - Flywheel, clutch/assembly, bell housing, breathers, carburetor, starter, motor mounts, oil/temp sending units, water pump, fan, pulleys, dip stick, distributor, wires, water outlet/restrictor, fuel pump, fuel pump plate/rod.
(C) Driver may NOT claim another driver finishing in a position behind them and may not claim the same driver more than once per calendar year.
CARBURETOR / DISTRIBUTOR / SHOCK CLAIM RULES:
The official claiming area is in the tech area, or wherever track designates. Claim must be made immediately after the “A” feature race finishes (checkered flag). Only the driver may make the claim. Driver must have money. The claiming driver must be on the same lap as the driver being claimed. Only the top three cars may be claimed by another driver. A driver can claim another
driver’s multiple claims on the same carburetor, distributor, or shock, a draw will be held with claiming drivers to determine who gets claim. Refusal to sell will forfeit all cash, trophies, and points for the night. If claim is refused, claim is NOT held against driver who made claim.
Carburetor claim $200.00 and swap, Shock or Spring claim $20.00 each and swap, Distributor claim $100.00 and swap.