[V8] spark plugs - recommendations? and Distributor rotor type?

Gunter Lorberg glforensic at yahoo.com
Thu Jun 9 00:33:41 EDT 2005

I'm running Autolite 103 plugs on both my 1990 V8s.  Keith of Audiconnection made this recommendation and they have proven to be trouble-free.  The stock application plugs originally on one car fouled up and made the car difficult to start.  The problem resolved with the 103 plugs.

"Miller, Chris" <chris.miller at infofoundry.com> wrote:
Quick look through the archives, and don't see much agreement on the
best plugs for the V8.

Bosch H7DC0 => stock application
NGK BU6-SFSZ => stock A8 application, recommended by a dealer for all V8
Bosch HGR7KQC => appears to be the Worldpac recommendation

Using the H7DC0 number, several cheap options appear, including Champion
Copper Plus plugs CHA304 and Autolite ASP103.

Any consensus? Anything I missed that works better? I'm looking for
something inexpensive but good; preferably stocked locally.

On a related note, is there an alternative source for the distributor
rotors? '93 4.2; are they set-screw or push on style?


Chris Miller
Training Development
[i] The Information Foundry at Robert Bentley, Inc.
Tel: 617.528.4113
Cell: 617.875.3792
mailto:chris.miller at infofoundry.com
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