Hickory Motor Speedway Rules Addendums
Hickory Motor Speedway Rules Addendums 2016
Late Model Stock Car Addendum 2016
Optional Carburetor/Spacer for GM part# 88958604 , GM part# 88958603, or Ford part # M-6007 D347SR Crate Engines.
When using optional approved Holley HP80507-I 390 cfm, only a one piece open hole solid aluminum carburetor spacer, a maximum 1 in thickness, may be used between the intake manifold and the carburetor. The spacer must be centered on the intake manifold with a single open hole which must be cut perpendicular with the base of the carburetor. Taper, bevels, or any other modifications will not be permitted. Spacer not allowed with any 650 cfm carburetor.
Only a one piece open hole solid aluminum carburetor spacer, a maximum 1 in thickness, may be used between the intake manifold and the carburetor. The spacer must be centered on the intake manifold with a single open hole which must be cut perpendicular with the base of the carburetor. Taper, bevels, or any other modifications will not be permitted.
A one piece, one hole paper gasket. Maximum .065 thickness that matches the exterior dimensions of the carburetor throttle base plate must be installed between the carburetor and spacer. A one piece paper gasket maximum .065 thickness must be installed between the spacer and the intake manifold. The gasket must not be larger than the top of the intake.
All cars must start race(s) with same Carburetor used in qualifying. Removal of carburetor anytime after qualifying must be approved and accompanied by track official(s). All carburetors are subject to technical inspection at any time.
Street Stock Addendum 2016
Spacers will be per m itted to utilize the m axi m um allowable tread width. - One spacer per wheel, no welding, magnetized steel. Billet aluminum or magnetic Steel is approved. Spacers, if used, must be the same thickness left and right; however, the front and rear do not have to agree. Cars must not exceed the maximum allowable tread width of 65 inches, front and rear measured from the inside of one wheel to the outside of the other wheel, zero toe-in, at spindle height. A tolerance of ½ inch will be permitted between the front tread width and rear tread width, but the widest tread width must not exceed 65 inches. No welding allowed on any wheels
One maximum ¼ extra wheel spacer' will be permitted on the right rear axle housing for tire sidewall clearance. With this extra spacer allowed, the right rear spacer(s) total thickness may be ¼ more than the left rear although the treadwidth still must not exceed 65 inches.