Batman Posted November 23, 2022 Share Posted November 23, 2022 i have 70 350 4bbl stock.chiltons calls for ac r44.i cant find any.is there another one i can use thats easier to find. Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted November 23, 2022 Share Posted November 23, 2022 R44ts, a little hotter plug, r45ts 1 Quote Link to comment Share on other sites More sharing options...
Scott S. Posted November 23, 2022 Share Posted November 23, 2022 I've had good luck with NGK plugs. YR5, YR5GP, YR5ix.... Depending on your driving habits. Quote Link to comment Share on other sites More sharing options...
Scott S. Posted November 23, 2022 Share Posted November 23, 2022 Just now, Scott S. said: I've had good luck with NGK plugs. YR5, YR5GP, YR5ix.... Depending on your driving habits. And they're a touch shorter too.... Easier to install. 1 Quote Link to comment Share on other sites More sharing options...
Leghome Posted November 25, 2022 Share Posted November 25, 2022 We use R45TS in my small block 350 Quote Link to comment Share on other sites More sharing options...
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