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Joined: Jan 2018
Posts: 147
Member
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Member
Joined: Jan 2018
Posts: 147 |
Hey Guys, just looking to replace the plugs in my 68 400 HO and noticed it has AC R44S Plugs in now, but apparently they don’t make that plug anymore? Would you guys use the 43’s or 45’s?
I know it’s got a bit more aggressive cam then stock but the rest is a mystery. Factory Heads.
Rock Auto calls for the 43S in a 400 4bbl?
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