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Old 08-05-2007, 04:32 PM
JOZW30 JOZW30 is offline
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Default 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.
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