IHRA classification guide

[Robert Swartz]

Originally Posted by Mark Yacavone

Thanks, Mike
So, is there a weight penalty for a stick shift?

Mark,

Straight from the rule book.

Pure Stock
These classes are for street type cars which have minor modifications to the engine,
chassis, transmission, carburetor, etc., unless it is specifically stated that a modification
or optional equipment is permitted. No turbo or super charged cars allowed. A through I
are the only available classes, with the same class breaks as stock, "Class weight breaks
and indexes are for both stick and automatic".
Numbers must be at least 4” high on all 4 windows.
CLASS WEIGHT BREAKS FOR STICK AND AUTOMATIC:
A/PS ....................8.00 to 8.99
B/PS ....................9.00 to 9.99
C/PS ....................10.00 to 10.99
D/PS ...................11.00 to 11.99
E/PS ....................12.00 to 12.99
F/PS.....................13.00 to 13.99
G/PS ....................14.00 to 14.99
H/PS ...................15.00 to 15.99
I/PS......................16.00 to 16.99