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09-27-2008, 07:58 PM | #1 |
Engine n00b
Join Date: Feb 2008
Location: Austin
Posts: 1,031
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SBC 350 - spark plug question
I went to O'reillys and picked up 8 of the Champion RJ12YC about 3 mos ago.
Today I go to put them in - they don't fit! The "base" is too wide. So I take out one existing, an Autolite 26. Now according to Autolite's site, this make/model should use the Autolite 303. But that one has a fat base too. Are my heads non-stock or something? How can I tell? So I ended up buying 8 more Autolite 26's. Product sheet here: http://www.power-21.com/honeywellpow....aspx?b=&pn=26 Now, the real fun. I get home, swap all 8. Only one of the PO's was an autolite. All the others were AC Delco R45TS plugs. So I guess the question is... do those wide base plugs fit in other SBCs? Why not mine? |
09-27-2008, 09:32 PM | #2 |
72 Chevelle Club
Join Date: Jun 2007
Location: Newton , Iowa
Posts: 2,052
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Re: SBC 350 - spark plug question
The champion plugs you need should be rv12yc champion chevy uses 2 different plug sizes depending on what heads you have . Hope this helps . Bob
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I Have The Right To Remain Silent,But Lack The Ability 1972 Chevelle ... Mine 2006 Trailblazer... Hers 2002 Buick century ... Kids 2002 K1500 Z-71 EXT CAB ... Daily Driver 2005 Rockwood Roo ... For Camping 1974 Harley-Davidson XLH Sportster 84'' stroker Last edited by Bob 68327; 09-27-2008 at 09:32 PM. |
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