Bill:
The car is not nearby, but the pictures I took of the engine show that #5
and #7 are close to each other in the wire loom, then cross near the cap.
How far apart should they be? Would the spacing of a typical wire loom be
enough, or should there be at least a wire in between?
If you want to see a picture of the set up you can go to:
http://www.eagleshore.com/bear/engine-left-close.jpg
Tom
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Bill Vander Werf
Sent: Tuesday, June 03, 2003 5:22 PM
To: [EMAIL PROTECTED]
Subject: RE: [Chevelle-List] Rich Edelbrock Carb
Always keep the #5 and #7 wires routed away from each other. The
cylinders are next to each other and they are so close to each other in
the firing order that an inductive pulse from the #5 wire can cause a
spark in the #7 cylinder, firing both 5 and 7 at the same time. Waay
early for the #7 cylinder.
Bill Vander Werf
----- Original Message -----
From: "Tom Tomlinson" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, June 02, 2003 8:21 PM
Subject: [Chevelle-List] Rich Edelbrock Carb
> Last week I started up my 350 Malibu after installation of a new
Edelbrock
> 2701 intake manifold, 1405 carb, Sanderson headers. The good news is,
there
> are no external leaks of water, oil, or exhaust. The bad news is,
after
> adjusting dwell and timing, I find the car "pops" in the header when
> accelerating and decelerating. I installed an O2 sensor to help with
tuning,
> and it's telling me the mixture is rich (O2 sensor reading > 900mv),
so I
> suspect extra gas is igniting in the header. I'm disappointed because
the
> intake/carb combo are supposed to be "matched" and run "right out of
the
> box". The engine has stock heads and ignition, and a modified cam of
unknown
> spec (the previous owner said "it was a 350 HP cam with nothing above
5k
> rpm").
>
> - Has anyone else noticed an overly rich 1405 upon initial
installation?
> - can the cam have a dramatic effect on A/F mixture?
> - is there an easy way to check for ignition cross-fire (I made new
plug
> wires and they could be part of the problem).
>
> Tom Tomlinson
> '71 Malibu
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