----- Original Message -----
Sent: Sunday, February 27, 2005 1:23
PM
Subject: IML: off idle stumble with
Holley
I had much the same trouble with the Holley on a freshly rebuilt 440 in
my '72 T&C. It also would surge at a steady throttle, as though it
were running a bit lean. My carb rebuilder opened the carb and checked
the step-up rods and found them to be larger than spec. That would cause
the car to run lean and may have been changed out during a 70's fuel crisis in
hopes of better mileage. He replaced them with 2 step (as opposed to the
correct 3 step) rods that had part of the correct spec. That change had
made the car run much better, though still a slight stumble and a bit less
surge at part throttle. If I could find the correct original spec rods,
I'd change them out and would hopefully have the carb performing as
intended. Otherwise the car runs very strong, as befitting a 440.
Cheers,
Roger
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