I've had two Gen I's and they did not like anything over 0.038. But that's
the old oil coils for you. Right now I run NGKs at about 0.038 in my '95
Sport. 1996 and older magnums call for 0.035, 1997 and up magnums call for
0.040. I put a set of NGK's in my buddies 98 Laramie back in March. Gapped
tham right at 0.040. Not a gripe yet, and this guy isn't very hep on cars,
he's a tile setter. I have run AP3923 or 4's at 0.040 in mine. No
difference in performance or mileage except maybe a little better speed
going up a 7% or a long 3 or so % grade. Biff
----- Original Message -----
From: "Dan Kramarsky" <dkramarsky68@yahoo.com>
To: <dakota-truck@dakota-truck.net>
Sent: Monday, November 07, 2005 9:50 AM
Subject: DML: Spark plug gap
>
> I have the Autolite 3924 plugs. Factory manual says .035 but we (the
DML) always say 0.040.
>
> When do you use 0.035 and when do you use 0.040?
>
> Motor is stock except for the 180* T-stat and re-located IAT.
>
> -dan k.
>
> Dan K.
> '92 Grey Dak CC, 318, 4x2, 46RH, 3.55 rear, 235/75R15, PS, PW, PB, PL, AC.
>
> Mods: Cool air, K&N oil/air, 180* T-Stat, Autolite 3924s, re-located
IAT, Trans-Go shift kit.
>
> Future: Swap motor for a slightly modified Magnum 5.9L engine.
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