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Old 10-06-2014, 07:09 AM   #1
pwdcougar
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Join Date: Oct 2013
Location: New Jersey
Posts: 1,302
Goodwrench 350 spark plugs

My 70 Burb has a Goodwrench 350 in it with a later model Duraspark distributor. Any idea what plugs to run in it? The motor was purchased from a Chevy dealer around 1984. I get different listings for stock plugs for a 1970 350 and for an early to mid 80's 350.

The thread size is the same but I'm getting a choice of like 5 different plugs.

Later today I'll post the choices if I can.

Paul
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1969 Mercury Cougar Standard 4 speed
1969 Mercury Cougar XR7 convertible
1970 4WD Chevrolet Suburban
1997 4WD Chevrolet Silverado Extended Cab Short Bed (purchased new January 1997)
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