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05-04-2009, 02:09 PM
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#1 |
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Registered User
Join Date: Mar 2007
Location: Kansas City, MO
Posts: 22
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307 spark plugs
Would a different spark plug be required if converting from a stock points system to a Pertronix Ignitor II system? The recommended plug for a stock 307 is an AC R43S. Is that what everyone else is using?
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05-04-2009, 02:25 PM
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#2 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: 307 spark plugs
same plug but gapped 44thousandths
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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05-04-2009, 03:30 PM
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#3 |
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Senior Member
 
Join Date: Jul 2004
Location: Estherville, Iowa
Posts: 3,371
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Re: 307 spark plugs
R43S is a little cold IMHO. I would and do run an R45S in our 307 gapped at .045 with an HEI. It does use a little oil, short drives etc, and the hotter plugs stay clean longer. Or an R44S would be good too.
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1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0 Last edited by Green Machine; 05-04-2009 at 03:32 PM. |
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