2017 Mini Stock Rules
(Updated 3-20-17)


Must be stock appearing as acceptable to the Technical Inspector. May build doors, quarters, sail panels (24 inches on the top and 30 inches on the bottom), and fenders. Late model style roof, aftermarket nose, and open tail panel ok. Rear spoilers 6 inches tall no wider than the trunk lid. Spoiler sides 6 x 12 inches. Stock spoiler ok. Enclosed interior ok.

Roll cage:

Must be minimum 1.50" OD tubing, minimum .095" steel wall thickness. Must have minimum 3 driver side door bars and 2 passenger side door bars. Must have support bars behind driver and must be welded to the frame. Must have a minimum 3 windshield protection bars. Window nets are recommended. Must have approved aluminum racing seat.


Stock. May tie together. Must have stock floor pan and firewall. No fabricated type. Firewall can be cut to a minimum for header.


Must be stock and match model claimed. Racing springs allowed, 5" diameter minimum. Jack bolts and/or lowering blocks allowed. Steel body, non-adjustable racing shocks allowed. Must use stock upper and lower control arms. Caster/Camber adjustment plates allowed. Pinto may run adjustable lower strut arms mounted in stock position.


Stock OEM, 7.5, 8, 8.8, or 9 inch may lock. No independent rear suspensions.


Stock box or stock rack. No aftermarket racks. May use heim joints on tie rod ends.
Quick release racing steering wheel recommended.


Disk brakes allowed. Steel caliper front and rear OEM components, stock rotors or drums. No lightening. No brake adjusters to master cylinder within arms reach of driver. May run three wheel brake.


Stock for claimed model. 1 inch tolerance. 92" minimum.


Steel 13x8" maximum Bead locks ok.


13x8" maximum Hoosier or American Racer. Any compound. 100 lb. weight break for approved D.O.T. street tire.


1 lb. per Cc - 2300 lb. minimum. D.O.T. street tires. 2200 lb. minimum.
Must post weight on A-pillar.


A. Stock 4 Cylinder engine for model claimed. No rotary, turbo charged, or supercharged engines. No mid or rear engine cars. Engine must remain in stock location. No setback.
B. Block - Steel OEM block only. Max .060 overbore size 3.845 Ford .005 tolerance. Zero deck. Plus or minus .003 tolerance.
C. Crank rods, pistons may be balanced. No knife edging crank.
D. Rods - Steel OEM rod only. Ford rod length (5.2047) must have part number on rod. May use aftermarket rod bolts, OEM crank, stock stroke only (Ford 3.126). Plus .006 tolerance. Rod may be bushed. Any flat tappet hydraulic cam. must have hydraulic working lifters. No tampering with inside of lifter. Shims and lash caps ok. .035 max on shims.
E. Head - Stock OEM head only. May cut head, no angle milling, 0.010 tolerance, no port or polishing. no cutting past valve seats, Any valve spring, steel lock and retainer, adjustable cam sprocket allowed. Stock diameter valves. (Ford intake valve 1.740/Ford exhaust valve 1.500, 11/32 stem, valve may be back cut. No ranger valves).
F. Piston - Any flat top piston.
G. Intake -Stock OEM only. Fuel injection intake allowed. 2-1/2 spacer max with gaskets. No porting allowed.
H. Exhaust - May run aftermarket header or stock manifold.
I. Oil Pan - Wet sump only.
J. Carburetor - Must pass no go gauge. Holley 4412 500cfm 2 barrel max. No fuel injection systems.
K. Flywheel - Steel
L. No forced induction, boxes, ductwork.
M. No electric water pumps.


Any stock OEM, manual or automatic. Must have working stock type clutch. Must have spring hub with 360 degree pad, (No puck type) all forward gears and reverse.
# Pressure plate must be stock replacement diaphragm type 7 1/2 minimum (no button type).


Stock production OEM with stock type OEM type replacement internals. No mels or inside of the distributor. Bronze gear allowed. Any conventual coil.


May run racing fuel. Electric fuel pump ok BUT MUST HAVE A SAFETY SWITCH SHUTOFF. Fuel cell or track approved tank attached with minimum of two 2" wide steel straps. Gas only. No nitrous. racing fuel must float a maximum specified gravity of 750.


All cars and driver's safety equipment must meet general safety rules described in the General Safety Rules section of the 411 Motor Speedway rulebook.


Visual: $50 pull hood, trunk, and any access panel (Track Retains 100%).
Pull Valve Cover: $50 and check lifter (Track Retains 50%).
Pull Head: $250 complete head, carburetor, intake, and bore and stroke. (Track Retains 30%).
Bore and Stroke: $200 (track Retains 30%).
Complete Engine: $400 (Track Retains $30%)
Fuel: $50 (Track Retains 100%)

All protest (engine, by rules) with the exception of a visual is to be done after the feature race is completed.