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#14 | |
VIP Member
Join Date: Nov 2007
Location: New Jersey
Posts: 2,628
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General Regulations Section 21, page 17 2:14 TRANSMISSION, AUTOMATIC/NHRAACCEPTED All cars running 10.99 (*6.99) seconds and quicker must have an NHRA-accepted locking-type dipstick on the transmission, and dipstick/filler tubes must be securely fastened (i.e., bolted, aircraft clamped). Wire ties, hose clamps, etc. prohibited. Any non-OEM automatic floor-mounted automatic transmission shifter must be equipped with a spring-loaded positive reverse lockout device to prevent the shifter from accidentally being put into reverse gear. Functional neutral safety switch mandatory. All transmission lines must be metallic or highpressure-type hose. All vehicles running quicker than 10.99 seconds (*6.99) or faster than 135 mph (except some Stock and Super Stock classes as noted under Class Requirements) and using an automatic transmission must be equipped with a transmission shield meeting SFI Spec 4.1 and labeled accordingly. (“Blanket”-type shield, appropriately labeled as meeting SFI Spec 4.1, permitted.) All non-blanket-type shields must incorporate two (or one, per manufacturer’s instructions) 3/4 x 1/8-inch straps that bolt to the shield on each side and pass under the transmission pan, or transmission pan must be labeled as meeting SFI Spec 4.1. Permitted in all classes where an automatic transmission is used. Comp, Super Comp, Super Gas, 9.99 or quicker E.T. cars, and 135-mph or faster E.T. cars using an automatic transmission, Lenco Drive, or BRT must be equipped with a flexplate meeting SFI Spec 29.1 and covered by a flexplate shield meeting SFI Spec 30.1. Transmission that can utilize a high-gear transbrake must be supported by the use of two momentary buttons (one to arm the system, second as the main transbrake). Air shifter bottles must be stamped with DOT-1800 pound rating (minimum) and be securely mounted (i.e., no tie wraps or hose clamps). Last edited by 1320racer; 09-26-2023 at 11:39 AM. |
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