I've searched and searched for the answer to this question but all i can find is other people asking the same thing. I have a 91 GT with an e-cam, upper and lower typhoon intake, 351 Windsor heads (D0OE casting), 1.6 RR's, 70 mm TB, Msd wires, blaster coil, K&N, and a few other odds and ends. My problem is that it will not rev past 5000 RPM, at idle or first gear. It pulls really hard up until about 4000 RPM then gets weaker and weaker until 5000 when it starts to pop. Not a loud devastating pop just a low pitch missing noise. Fuel pressure is good, i've replaced the ignition module, timing is 10 degrees, and the check engine light is not on, but does work. I have foung other posts where people have the exact same problem but they never say what they did to fix it or if they have fixed it. I was told that it could be valve float and i've been told that if it were floating valves it would have blown up by now. Any help woul be greatly appreciated.
Thanks, Richard.
Thanks, Richard.