Sources have confirmed the NHRA had originally planned to test the nitro engine combination with Tim Wilkerson following the NHRA Nationals in Joliet, Ill., could test a new nitro engine combination as early as May 4, the day following the NHRA O'Reilly Midwest Nationals in St. Louis, Mo.

UPDATED: A memo issued to the race teams now says the timing management will remain as is and the rev-limiter will be inactive.

Sources have confirmed the NHRA had originally planned to test the nitro engine combination with Tim Wilkerson following the NHRA Nationals in Joliet, Ill., could test a new nitro engine combination as early as May 4, the day following the NHRA O'Reilly Midwest Nationals in St. Louis, Mo.

The following specs are what will be tested.

1.)  4.187 Bore
2.)  3.750 Stroke
3.)   7 to 1 Compression
4.)   Single 70-gallon fuel pump
5.)   15% overdrive on the blower
6.)   No timing management
7.)   350 rear end gear
8.)   90% Nitro Methane limit

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