70BlackCherry Posted June 23, 2001 Share Posted June 23, 2001 I want to know what Delco AC spark plug is correct for my 70' 350 2-b? The owners manual says 44T. The parts store says R43S. The ones I took out where R45TS. What's up? Thanks for the help. Bob Link to comment Share on other sites More sharing options...
Guest Posted June 23, 2001 Share Posted June 23, 2001 Go with the R43S A/C plugs. My buddy at the parts store said those were the correct plugs for the 70 350 2-b. This is what I have. Link to comment Share on other sites More sharing options...
70BlackCherry Posted June 25, 2001 Author Share Posted June 25, 2001 Thanks, What would be the spark plug gap for these plugs? Link to comment Share on other sites More sharing options...
Grease Posted June 25, 2001 Share Posted June 25, 2001 if its still available GM list the plug as an ACR44 with a gap of .038 , installed to 25LBS torque ( from Monte Carlo Restoration packet) if you have upgraded to HEI the gap would be set to .045 . mike Link to comment Share on other sites More sharing options...
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