Tuning help
Looking for some tuning advice. My 72 W30 runs pretty good, but I've noticed that the car seems to "surge" slightly while at cruising speeds (40+ MPH).
It doesn't seem to be missing. The engine feels smooth, just feels like the car is lurching very slightly. If I accelerate even slightly, it goes away.
It's a 455 with an NOS 1970 W31 cam. The car accelerates smoothly, and there is no pings or knocks. Plugs are dry, & look good.
Am thinking maybe a fuel delivery issue? Could it still be a timing issue?
Any thoughts?
Thanks guys.
|