by Jim Campbell, MSPA Head Tech Official
Open FWD rule changes
30% OD Blower
Blower OD
14 – 71 30%
12 – 71 40%
10 – 71 50%
8 – 71 60%
Diesel Truck rules for Open FWD class
Hitch – 36% of Wheel Base
Single Stage
Single Charger
Weight 7600 lb
Bar Tire – 112 Roll Out
Duel Stage
Bar Tire – 112 Roll Out
26” Hitch
Weight 6200 lbs
Natural Aspirated Motors
Weight 6200 lbs
Hitch 36% of wheel base
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PS4WD rule changes
1) No sheet metal intakes
2) Weight = 6200#
3) Gas Octane = 118 or less
4) No Oxygenated Fuels
5) No Fuel additives
6) No VPC44
7) Body Hulling - metal cutouts must be replaced by 16GA or thicker - no aluminum except bed
8) Must run factory glass windshield
9) 31 x 15.50 Dick Cepecks allowed
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If you need your clutch inspected please give one of our NTPA certified clutch inspectors a call...
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For more information on NTPA rules check out the NTPA Tech Page.
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2007 NTPA Rulebook(s)
To order a 2007 NTPA rulebook, either call the NTPA office @ (614) 436-1761
-or-
Mail $6.00 plus $2.00 shipping and handling to:
WPI/NTPA
6155 B Huntley Rd.
Worthington, OH. 43229
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