Engine/Transmission (1994 - 1998) Fuel Plates and dyno charts

[Joseph Donnelly]

Performance is affected by the torque plate and the position of the AFC “foot” that rides on the pump rocker next to where the torque place rides. Once the AFC is out of the way due to high boost, the power at different rpm is affected by the shape of the torque plate. The #10 gives the most fueling of the four plates I mentioned (#5, 6, 8, 10) at low rpm, up to about 1800-2000. Above that, the other plates can give more fueling, with the smaller number giving more fuel. On an otherwise stock 180 HP engine, the torque curve is somewhat fatter and the top end power more as you go down in number, with peak power going from around 230 HP to 280 HP. As you move the torque plate forward, power increases at a rate of about 1 HP per . 003” movement. The #10 would give a lot of lower rpm torque, more than the stock transmission or clutch could handle, if the AFC gets out of the way fast enough. The #10 was designed to give peak HP at 1800-2100 rpm with the 215 HP pump and somewhat reduce fueling above that rpm to moderate egt a little. Correct injection pump timing is a function of rpm, not the torque plate. At around 2000-2100, best timing seems to be around 15. 3-15. 5 degrees.