LONESOME PINE RACEWAY

CHARGER RULES

Competing models minimum wheelbase 105 inches

CAR BODIES:

A. Aftermarket bodies permitted.

B. Anything that bolts in may be removed.

C. All hood and cowl air vents must be removed or covered. D. Hulling for door bars is permitted.

E. Doors must be welded shut.

F. All glass and flammable material must be removed.

G. Windshield required; back window is optional.

H. Pre-fabricated magnetic steel aftermarket bodies (body kits) allowed per track approval.

I. Any fabricated sheet metal must be minimum 22-gauge steel.

J. Chassis height minimum 4 inches, roof height minimum 48-inches.

K. Crank height will remain at 12 inches.

WEIGHT:

A. All weight must be painted white with car number clearly identified upon it, added weight must be in block form, weigh no less than five (5) lbs and be securely bolted into place. No weight may be added outside of the frame rails, ahead of the front spindles or behind the rear axle.

B. Any car competing with dislodged or lost weight may not add t back to meet weight requirements after the race.

C. Sub-frame car will weigh 3100lbs, right-side 1350lbs. ( Camaro)

D. Metric chassis will weigh 3100lbs, right-side 1350lbs.

E. Full Tube Chassis cars will weigh 3250lbs Right side 1450

F. Stock Clip Chassis will weigh 3175 Right side 1400

ENGINE:

A. Only standard production engines allowed. Chevrolet 350 cubic inch maximum, Ford 351 cubic inch, Chrysler 360 cubic inch, Chevrolet 602 Crate.

602 Chevrolet crate is allowed to put the 3/8 inch screw in studs Only.

Option 1: Rocker arm GM part #19210724 and Adjuster Nut #88961233 may be used. Option 2: Scorpion 1.5 Rocker Arm part #SCP1035 with matching adjuster nut may be used.

602 is allowed to run the Beehive Valve springs.

B. Engines may be interchanged in manufacturer lines only.

C. Engine may be balanced.

D. Steel racing oil pan permitted.

E. Overbore of 060 permitted.

F. No electric fuel pumps permitted.

G. Flat top or dish pistons permitted.

H. Steel crank minimum weight 48 lbs, cast crank minimum weight 50 lbs.

I. Crank journals may be ground for undersize bearings. No other machine work will be permitted.

J. Pistons must not extend above top of block, except Chrysler.

K. Four bolt main blocks permitted.

L. Aluminum water pumps permitted.

M. Aluminum and aftermarket pulleys allowed.

HEADS:

A. Any stock production steel heads are allowed.

B. Angle plug heads- add 25 lbs.

C. NO modifications, no porting or polishing, No grinding of any kind 3 angle valve job ok, as per late model stock rule.

D. 64cc minimum.

E. Cam and lifters with a maximum lift of 480 inch and stock rocker arm ratio.

F. Roller rockers optional 1.5 ratio only.

G. NO roller or solid lift cams allowed.

BUILT MOTOR:

350 box stock carburetors no XP

Built Engines with 882 Heads must run a Box Stock 500 Carb.

602 CRATE MOTOR FROM GM 500 box stock carburetors.

NO XP 500 CFM Holley, 4412 hp MUST be styled with choke horn also may add restrictor plate Supplied by LPR.

BUILT MOTOR WITH VORTEC HEADS:

Will run a 350 carburetor. NO XP

Older late model Heads or World Products heads will run 350 Carburetors.

ALL BUILT MOTORS MUST HAVE 2101 EDELBROCK INTAKE INTAKE AND SPACERS:

A. Only the following Edelbrock aluminum intakes are permitted. Chevrolet #2101, Ford with 4bbl heads #2665, Ford with 2bbl heads #2750, Ford Windsor #2181, Chrysler #2176. Any stock cast iron single plane intake manifold allowed.

B. NO porting, polishing or gasket matching will be permit ed.

C. Only a One-piece solid spacer 1-inch thickness may be installed between intake manifold and carburetor

D. The Throttle bores must be completely round, The Throttle bores must be straight and remain Perpendicular without taper from top and bottom. Throttle bore and Spacer bores must match.

E. Only 2 paper gaskets, 1 per side, maximum thickness. 065” will be permitted.

CARBURETORS:

A. NO polishing, grinding or drilling holes will be permitted in the body of the carburetor.

B. Choke may be removed, and all holes must be permanently sealed.

C. Choke horn may not be removed and/or altered.

D. Boosters may not be removed and/or altered.

E. Venturi area must not be altered in any manner. Casting ring must not be removed.

F. Base plate must not be altered in shape or size.

G. Stock butterflies must not be thinned or tapered. Idle holes may be drilled in butterflies.

Screw ends may be cut even with shafts, but screw heads must remain standard.

H. Throttle shafts must remain standard and must not be cut or topped in any manner. I. Any attempt to pull outside air other than through the venturi is not permitted.

AIR CLEANER:

A. Round air cleaner element minimum of 12 inches, maximum of 17 inches in diameter permitted.

B. Top and bottom of air cleaner must be same size.

C. Element must be minimum of 1-½ inch and a maximum of 4 inches in height.

D. Dry type paper element only.

E. No tubes, funnels or anything which may control the flow of air are permitted inside the air cleaner or between the carburetor and air cleaner.

F. No shield around air cleaner will be permitted.

COOLING SYSTEM:

A. Aluminum radiators permitted.

B. All cars must have catch can mounted under hood or trunk.

C. ANTIFREEZE IS NOT PERMITTED – ($100 FINE)

D. Electric fans are permitted.

E. Radiators must be stock appearing and installed in front of the engine.

F. Track official must approve all ductwork.

EXHAUST:

A. Headers permitted.

B. OEM stock cast iron manifolds permitted.

C. Aftermarket exhaust manifolds permitted.

D. Exhaust collectors and exit pipes must not exceed 3 ½ inch OD.

E. All exhaust must exit the car behind driver.

CLUTCH ASSEMBLY:

A. 10 ½ inch diameter steel pressure plate and fly wheel must be single disk. Fly wheel must weigh at minimum 16 lbs.

B. Hydraulic clutches are allowed.

C. You can also run 7 ¼ inch clutch.

REAR END:

A. Stock, 10 and 12 bolts rear ends and 9-inch Ford rear ends allowed but not recommended. Floater rear ends recommended.

B. Differentials may be locked, Detroit locker or limited slip.

C. GM metric Cars may have adjustable coil spring spacers in rear only.

D. Leaf Spring cars may have adjustable spring shackles in rear.

E. Rear end hook-up must be stock from factory, 3-link permitted on metric cars.

F. Bolt pattern 5” x 4 ½”, 5” x 4 ¾”, 5” x 5”, 5” x 5 ½”.

G. Quick-change rear ends WILL BE PERMITTED; only gears offered is the same as a FORD 9” ratio. If not offered in Ford 9” , cannot use other quick-change rear gear rear end.

RATIO

RATIO

SET

RATIO

SET

RATIO

SET

5.50

5.49

16

5.48

9A

5.49

7

5.67

5.67

34A

5.67

3

5.67

17A

5.83

5.82

35

5.82

18A

5.83

9A

6.00

5.97

24

6.01

22

6.02

3

6.20

6.18

23

6.18

10

6.21

4A

6.33

6.32

21A

6.31

34

6.31

20

6.50 6.51

8

6.49 2 6.48 6