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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: chevn-up on March 04, 2018, 11:30:32 am

Title: spark plug thread size
Post by: chevn-up on March 04, 2018, 11:30:32 am

Hey, hey. Need to verify if the plugs in my 305 are 14mm.? Thanx

Title: Re: spark plug thread size
Post by: Rapid Roy on March 04, 2018, 11:38:37 am

Take a look at this

http://www.jegs.com/i/ACDelco/065/R45TS/10002/-1

Title: Re: spark plug thread size
Post by: bd on March 04, 2018, 01:34:18 pm

M14 x 1.25