Unified Stockcar Racing Association (USRA).
GENERAL - Tech
man has right to check this every week.
1 - No nitrous or traction control.
2 - After 3 times of refusing to tear down - you
will be disqualified from competing in this division
the remainder of the year.
3 - A driver cannot compete in this division and a
different division on the same night.
4 - Cars must be neat in appearance.
5 - Cars must weigh 3300 pounds with driver after
6 - 8" wheels max .25" tolerance - 14 or 15" - Must
be same size all the way around.
7 - No dot racing tires.
8 - Any 70, 75, or 78 series street legal dot tires
series radials - No directionals or competition
9 - 8" towel city racing recap OK but must punch 55.
10 - May run beadlocks but must face outside.
11 - May run offset rims and wheel spacers.
12 - Stock brakes and master cylinders.
13 - OEM brake calipers only - No aluminum.
14 - Duel master cylinder OK - Adjusters OK.
15 - Headers are legal but must exit parallel to
16 - RULE CLARIFICATION ON EXHAUST (EFFECTIVE APRIL
14TH) - NO TRI-WYE HEADERS, NO H-PIPES, AND NO
17 - Aluminum radiator with made brackets OK.
18 - Fuel cell must be mounted inside of trunk with
firewall between driver and fuel cell.
19 - Seat must be securely fastened to frame and or
20 - Cars must have number on sides and top and able
to be read by score tower.
21 - Stock unless other wise stated.
BODY - Visual protest only.
1 - No Late Model noses or fender flares.
2 - Stock unless otherwise stated.
3 - 1968 or newer American made car.
4 - No station wagons, trucks, jeeps, convertibles,
mustangs, or pony cars.
5 - Rear of car must be closed - No holes or flaps.
6 - Must have a deck lid.
7 - May make front fenders and rear fenders.
8 - No side spoilers.
9 - Spoiler may not exceed 60" wide by 6" tall and
no spill plates.
10 - Cannot exceed 48" from ground to the top of the
11 - May run any replacement roof - Must be 48" X
50" - Don't do anything crazy.
12 - Aluminum door and fenders OK.
13 - 13" minimum door and rear glass opening.
14 - Interior can be boxed in.
15 - Front and rear bumpers - Rubber nose OK - Stock
appearing - No cow scoop.
16 - Breather must be boxed in on all 4 corners and
cannot exceed 2".
17 - May pull air from inside car but no forced air
no forced air.
18 - Front inside wheel wells can be cut or removed
for clearance but not excessive.
19 - All firewall holes must be covered.
20 - Must have stock firewall in original location.
21 - May replace dash with sheet metal - Interior
metal cannot be higher than dash.
22 - Gutting hood and trunk OK.
23 - Bumper cannot exceed past the inside of the
rear tire or must run a bumper cover.
24 - May use lexan in rear side windows.
WHEEL BASE / FRAME
1 - Frame must match make and model of car - 1"
tolerance +/- allowed.
2 - No shortening of frame - Must be stock - No x-ing
or cutting of frame.
3 - Length between spring eyes must be stock.
4 - Wheel base for make and model.
5 - Engine must be in stock location.
6 - Radiator must be in stock location.
ENGINE - BOTTOM END
1 - Any oem stock size engine - Max size 363 - 060
over bore max.
2 - Engine must be in original location -
Aftermarket mounts OK.
3 - Repaired engine parts must be approved.
4 - ARP Rod bolts ok but must remain stock size -
5 - 1 piece rear seal block OK.
6 - No high performance engines or special order
7 - .060 over bore max.
8 - Stock blocks only.
9 - Must be stock replacement low compression
10 - No flat top 4 eyebrow piston - Must be dished.
11 - Speedpro H423 NCP replacement piston OK.
12 - Pistons must be at least .009" in block.
13 - No bottoming of lifters.
14 - Stock crankshaft.
15 - No knife edging or lightening, etc.
16 - Cast crank must weigh 48 lbs.
17 - No stroking or destroking.
18 - No balancing.
19 - Journals may be turned no more than .060" .
20 - Rod width may not be less than .94 .
21 - Stock timing chain gear set only no offset key
22 - Balancer 6 3/4 by 1" no machining.
23 - Engine must be in original location but may run
24 - May run racing pulleys - No serpentine pulleys.
25 - Aluminum water pump allowed.
26 - No serpentine pulleys - v belt racing pulleys
27 - After market fuel pump OK.
28 - After market power steering OK.
29 - 2 piece timing covers OK.
1 - Any open chamber head ok but must meet the
2 - May run stock replacement screw in studs or pin
3 - May run aftermarket valve cover.
4 - Heads cannot be less than 72 cc.
5 - No ange milling.
6 - Stock size of valve for make and model.
7 - Valve springs can be z28 springs.
8 - No cutting under 45 - No competition valve job -
No 3 angle valve job.
9 - Shims can be used under valve springs with a
limit of .60 per string.
10 - May use off set locks but not with shims.
11 - Rocker arms must be stock.
12 - No porting or polishing.
13 - Steel valves only.
14 - Stock stem diameter.
1 - Stock cast iron.
2 - No holley pattern factory intakes.
3 - No aluminum intakes.
1 - Stock 2 or 4 barrel only.
2 - No modifications except choke flap removal.
3 - No removal of choke horn.
4 - 600 Holley part # 1850 OK - Must be box stock
with mr gasket adaptor part #1932.
5 - May use (2) .070 gaskets max.
1 - Stock timing chain only.
2 - Or Cloyes C-3023X adjustable timing chain OK.
3 - .390 - .410 lift.
4 - 112 lobe seperation +/- 1 degree.
5 - Advancing or retarding the cam in car with
adjustable timing OK.
6 - Cloyes C-3023X only - No cam buttons.
7 - Stock cam or stock replacement cam only.
8 - Duration for intake + 2 degrees / -10 degrees.
9 - .006 - 256 degrees.
10 - .050 - 195 degrees.
11 - .200 - 95 degrees.
12 - Duration for exhaust + 2 degrees / - 10
13 - .006 - 261 degrees.
14 - .050 - 202 degrees.
15 - .200 - 106 degrees.
16 - Must have 18" vacuum at 1000 rpm.
17 - Hydraulic cam and lifters only.
18 - Cams CS-274 Sealed Power and CCS-2 Melling and
Comp Cam 12-105-3 are a stock produced cam and will
be looked at with a little more variance. All custom
ground cams will be required to meet the above
FLYWHEEL AND CLUTCH ASSEMBLY
1 - Stock steel flywheel - 14 lbs. minimum.
2 - Stock type clutch and pressure plate - Minimum
3 - May use hydraulic clutch.
1 - Must be stock with all working forward and
2 - Automatic transmission torque converter stock
type and 11" minimum.
3 - May run transmission cooler.
4 - Aftermarket throw out bearing OK.
5 - Automatic transmissions OK.
6 - No lightening of gears.
7 - 3 speed straight drive cast iron transmission
with all working gears.
8 - Straight drive transmission cars must have blow
proof bell housing or scatter shield of 1/8 steel.
9 - May use hydraulic clutch.
1 - Has to be stock for model of car or may run 2"
2 - No carbon fiber.
3 - A "U" or square type safety loop on front of
drive shaft assembly is required.
1 - Stock type ignition.
2 - Stock type distributor only.
3 - No high performance distributors or high
4 - No altering firing order.
5 - No msd's with boxes.
1 - GM 10 or 12 bolt rear-end.
2 - 9" ford or floater OK.
3 - Shocks have to be in stock location - May move
for travel only - No angle change.
4 - May run aftermarket axels.
5 - Any gear ratio allowed.
6 - Locked or limited slip rear ends allowed.
7 - Full spools OK.
8 - no gun drilled axels.
9 - No gun drilled rotors or scallopped rotors.
10 - No lightening of any parts.
11 - All components must be made of steel.
12 - Disc brakes ok - Doesn't have to match model of
13 - Can cut top of trailing arms for pinion angle.
1 - Suspension must be stock.
2 - May run racing springs with adjustable buckets.
3 - Top a-frame can be cut or move top mounting
4 - no adjustable blocks - 4" of lowering blocks
5 - Tube type a-arm on top oly OK - Non adjustable -
Screw in ball joints on top OK.
6 - Can use heavy duty oem steering and suspension
7 - Leaf or coil springs can be changed to stronger
leaf or coil of the same type.
8 - Cutting of coil spring allowed - Rear shims on
coils are OK.
9 - Adjustable or non adjustable spring buckets OK.
10 - Shocks must be in stock location in front.
11 - Adjustable buckets in rear OK.
12 - All hook up points on chassis must be in stock
13 - Rear shock location must be stock on top and
can be moved on bottom for travel length only.
14 - Cannot change angle of rear shock.
15 - Top trailing arm may be cut for pinion angle
16 - Leaf spring cars may adjust perches for pinion
17 - May adjust rear shackles.
18 - After market bushing in a-frames and trailing
arms ok but may not swivel.
19 - No heim joints on any shocks.
20 - May run any stock body racing shock.
PROTEST AND CLAIM RULE
1 - Protest bottom - $500.
2 - Protest any 3 items - $300.
3 - Cam protest - $300 - Track keeps $100.
4 - Acceptance fee - $100.
5 - Track keeps $100.
6 - Tech man has final say.