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Plug size for rocker shaft? #2320519 06/13/17 01:13 PM 06/13/17 01:13 PM
Joined: Jan 2003 Posts: 6,391 Abilene, Texas F fastmark OP master
fastmark OP master F Joined: Jan 2003 Posts: 6,391 Abilene, Texas	I need to clean out the inside of stock 440 rocker shaft and driving out the plug in the end seems to be the best solution. Does anyone know the correct size of drive in plug I need before I remove this one for cleaning. It is hard to measure with it still installed.

Re: Plug size for rocker shaft? [Re: fastmark] #2320562 06/13/17 02:38 PM 06/13/17 02:38 PM
Joined: Aug 2003 Posts: 43,163 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,163 Bend,OR USA	They may vary in size from year to year and for after market shafts I would drill and tap them for a NPT plug, if possible Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Plug size for rocker shaft? [Re: fastmark] #2320574 06/13/17 02:59 PM 06/13/17 02:59 PM
Joined: Jan 2003 Posts: 25,786 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,786 Rio Linda, CA	RockAuto lists them as: DORMAN 555067 Expansion Plug; Nominal Dia.: 39/64"SC; Metric Dia.; 15.93mm; Steel; Height: 0.200"; Open End Dia.: 0.635 The INTERNET, the MISinformation superhighway

Re: Plug size for rocker shaft? [Re: fastmark] #2320590 06/13/17 03:23 PM 06/13/17 03:23 PM
Joined: Oct 2006 Posts: 7,367 Iowa burdar Owen's Dad
burdar Owen's Dad Joined: Oct 2006 Posts: 7,367 Iowa	I was going to do the same thing on a set of stock small block shafts until I looked up the price on a new set from Summit Racing. I bought new.

Re: Plug size for rocker shaft? [Re: fastmark] #2320678 06/13/17 06:18 PM 06/13/17 06:18 PM
Joined: Feb 2007 Posts: 5,080 organ M maximum entropy master
maximum entropy master M Joined: Feb 2007 Posts: 5,080 organ	i reuse 'em. the shafts are not pressurized (they better not be!). for what is the good life if not doing things thoughtfully?

Re: Plug size for rocker shaft? [Re: fastmark] #2320685 06/13/17 06:23 PM 06/13/17 06:23 PM
Joined: Dec 2004 Posts: 10,553 Rittman Ohio fourgearsavoy I Live Here
fourgearsavoy I Live Here Joined: Dec 2004 Posts: 10,553 Rittman Ohio	I think I seen them on the 440 Source site Gus 64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60

Re: Plug size for rocker shaft? [Re: fastmark] #2320687 06/13/17 06:27 PM 06/13/17 06:27 PM
Joined: Jan 2003 Posts: 6,391 Abilene, Texas F fastmark OP master
fastmark OP master F Joined: Jan 2003 Posts: 6,391 Abilene, Texas	Well I had to just knock one out and take a chance I could find one today. It was 5/8" so I'm ok. I could not reuse it. It tears it up. Last edited by fastmark; 06/13/17 06:28 PM.

Re: Plug size for rocker shaft? [Re: fastmark] #2320688 06/13/17 06:29 PM 06/13/17 06:29 PM
Joined: Nov 2004 Posts: 3,544 Syracuse,NY CompWedgeEngines master
CompWedgeEngines master Joined: Nov 2004 Posts: 3,544 Syracuse,NY	Most are 5/8" yes. RIP Monte Smith Your work is a reflection of yourself, autograph it with quality. WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.

Re: Plug size for rocker shaft? [Re: maximum entropy] #2320719 06/13/17 07:22 PM 06/13/17 07:22 PM
Joined: Aug 2003 Posts: 43,163 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,163 Bend,OR USA	Originally Posted By maximum entropy i reuse 'em. the shafts are not pressurized (they better not be!). They are pressurized momentarily when the cam oil holes align with the block oil passages, unless you make the rocker arms oil full time like I do on roller cam motors Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Plug size for rocker shaft? [Re: Cab_Burge] #2320732 06/13/17 07:45 PM 06/13/17 07:45 PM
Joined: Feb 2007 Posts: 5,080 organ M maximum entropy master
maximum entropy master M Joined: Feb 2007 Posts: 5,080 organ	Originally Posted By Cab_Burge Originally Posted By maximum entropy i reuse 'em. the shafts are not pressurized (they better not be!). They are pressurized momentarily when the cam oil holes align with the block oil passages, unless you make the rocker arms oil full time like I do on roller cam motors 10-4 for what is the good life if not doing things thoughtfully?

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