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  1. Gauging demand, MFactory DOHC ZC 3/4 gears.

    Whoopee Doo Racing
    I will only have MFactory make these once there is enough actual demand. This means I need 10 partially refundable 50% deposits. 3rd and 4th gears for 92+ fitment. Straight-cut gear teeth. Ratios will be close to 1.346 3rd, 1.033 4th. Power rating will be between 400-500whp. Final ratios...
  2. Transmission building

    Whoopee Doo Racing
    Need your stock trans fixed? Parts installed? Custom setup? As MFactory's Official North American Installer, Whoopee Doo Racing is your one stop shop. Transmission building service includes: tear down, inspection, cleaning of all parts, media blasting of case, all clearances checked, diff...
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