I don't know specifically about the Mallory, but one of the reasons for
running electronic ignition is that you can get more voltage to the plugs
with better control of the spark pulses. Provided the Mallory accomplishes
that for you (more dwell should result in greater voltage) you'll have
higher voltage running through those wires. With higher voltage the wires
are more likely to become a problem if they are marginal. Wires for
electronic ignition are usually bigger (more insulation) for that reason.
You can run a larger plug gap with electronic ignition. Its late and I
don't remember if its a good thing, or just extends time between tune-ups.
I know I've read somewhere what the reasoning is.
I can't think of any reason to change heat range of your plugs, but I
certainly don't know everything...
That's my two cents!
----- Original Message -----
From: "Carl & Becky Ham" <the_hams@hotmail.com>
To: <oletrucks@autox.team.net>
Sent: Tuesday, April 22, 2003 9:59 PM
Subject: [oletrucks] Seeking advice after ignition upgrade
Just finished installing a Mallory Unilite distributor, coil, ballast
resistor and Edelbrock 600 CFM carb with new polished performer intake on my
283. Still using the Bosch premium plug wires I put on 2 years ago during a
routine tune up. Also have ACDelco R45TS plugs gapped at .030 to .035 inch.
With old distributor timing was set at TDC or 2 deg BTC.
Any need to upgrade change wires or change plug heat range or gap due to
going from original points/condensor to Mallory pointless system? I've had
timing suggestions anywhere from 4 deg. BTC to 12 deg. BTC.
Would appreciate any opinions. Thanks,
Carl Ham
'56 Chevy TF Stepside
Pontiac, IL
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oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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