[HandOverFist]

TRANSMISSION, Automatic
Any model transmission, same make as car, with a maximum of
three forward speeds (unless OEM equipped with more than
three forward speeds). O.D. gear not required, reverse permitted.
Transmission case must be OEM or aftermarket OEM replica
from a standard, automotive application as found in the Official
NHRA Stock Car Classification Guide. Aftermarket case must
meet SFI Spec. 4.1 and 30.1. NHRA-accepted adapter plates
permitted. Modifications to shifting patterns are permitted,
provided full shift pattern is retained. Full shift pattern must
include park and reverse. Any gear change must occur as a
result of an internal function of the transmission or from direct
action by the driver. Lockup converter permitted if OEMequipped
with lockup converter and OEM transmission is used.
Otherwise, lockup converters prohibited. Electronic rpm controls
for the electric (internal or external to the transmission) shifting
of automatic transmissions permitted in computer-controlled
vehicles only. Otherwise, any gear change must occur as a
result of an internal function of the transmission or from direct
action by the driver. Pneumatic, hydraulic, electric, etc. controls
and shifters in all noncomputer-controlled electronic-fuelinjected
vehicles prohibited. Deepened stock or aftermarket
transmission oil pans permitted. Drilling of transmission case or
rear of engine block to adapt incompatible units prohibited.
Functional neutral safety switch mandatory. Transmission brake
prohibited. Tailshaft modifications for bushing replacement, or
NHRA-accepted aftermarket tailshaft, permitted. See General
Regulations 2:12, 2:14.