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#11
03-14-2008, 04:43 AM
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Re: AC Delco spark plugs
R43N is the same heat range as the R43's. The N is for a BB because it takes the longer or extended threads. I believe 3/4". I like the R44S or the R45S for my 69 Z. They run nice and are an original AC Delco plug. S means extended tip. I bet the 44's or 45's would work good in the BB too.
 
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#12
03-14-2008, 05:12 PM
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Re: AC Delco spark plugs
[ QUOTE ]
Marlin....PM sent [/ QUOTE ] SOLD!
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Marlin 70 Yenko Nova-350/360, 4speed M21, 4.10 Posi (Daddy's Ride) 69 SS Nova-396/375hp, 4speed M20, 3.55 Posi (Benjamin's Ride) 67 RS Camaro-327/250hp, 2speed Glide, & 3.08 Open (Danny's Ride)
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