LTX Modified Naturally Aspirated (CLASS RULES)

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LTX Modified Naturally Aspirated


Limited to quickest 16 qualifiers on a .400 Pro tree in a heads up format. Is open to all LT1, 4, 5 powered vehicles. All vehicles must appear to be stock bodied and stock appearing. Sportsman Ladder.
Must have LT1-based engine.
No power adders permitted of any type. Nitrous plates, solenoids, soft or hard lines, nozzles, bottles must be disconnected, superchargers must be removed.
Gasoline only(race fuels, E85 permitted) Any aftermarket ignition allowed
Heads must retain the factory 23 deg valve angle Aftermarket and converted heads allowed. Trick Flow 21 deg. heads permitted (PN TFS-30400008-M54).
Converted intakes, stock and sheet metal permitted.
30" maximum height and 10" maximum tread width for bias-ply tires. W's limited to 28". 29.5 x 10.5 bias-ply permitted with 150 lb. weight penalty. Drag radials permitted.
Non-stock style suspension permitted. Mini-tubbing permitted.
Wheelie bars not permitted.
Aftermarket EFI, LS1 PCM and carburetors permitted.
Any GM transmission allowed. Trans brakes, line locks, and two steps- allowed. Electronic driving aids prohibited. Throttle stops, delay boxes and auto shifters prohibited.
Independent rear suspension receives weight break of 200 lbs.
Manual transmission receives weight break of 100 lbs. Torque converters not permitted with manual transmissions. Clutch-activated automatic transmissions (re: Clutch-flite) are prohibited
Minimum race-weight limit 3,075 lbs. All NHRA Rules regarding ballast apply Car and driver must meet NHRA certifications for the time the car is running.

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Updated: 03/21/2014