Can I use threaded brass plugs on my engine block for coolant drain plugs and oil gallery plugs fastened with L key type plugs ?
unburt said
Jun 2, 2011
What kind of motor are you working on?. Are you dealing with Pontiac 400/455
pontorquer said
Jun 2, 2011
Yes, my Pontiac 455, I also want to drill the little 3/16th hole in the back inside plug for distributor gear lubing ...
-- Edited by pontorquer on Thursday 2nd of June 2011 10:12:55 PM
unburt said
Jun 2, 2011
I did a rebuild 2yrs ago 461 stroker and i used threaded plugs in the oil galleys behind the timing chain. I think they were 3/8 pipe so i bought the proper bit and tap. When i did this mod i was very carefull not to screw the plugs in to far because you can block the passage-way. The key is to measure carefully. When the plugs are secure you can then use a chissel and secure the plugs in place. I also used brass plugs in the lower block 1/8 i believe.
pontorquer said
Jun 2, 2011
Thanks Andy, I was thinking of doing this too as well ...
unburt said
Jun 2, 2011
Just a note the distributor plug bit size is 30thou pretty small, i picked them up at machine shop suppply house .The hole is small because of pressure drop if to big, a fine spray is all thats needed. Good luck with the mods its worth it.
the70judge said
Jun 3, 2011
unburt wrote:
Just a note the distributor plug bit size is 30thou pretty small, i picked them up at machine shop suppply house .The hole is small because of pressure drop if to big, a fine spray is all thats needed. Good luck with the mods its worth it.
I did the same thing on my Ram Air III block back in 1996
Can I use threaded brass plugs on my engine block for coolant drain plugs and oil gallery plugs fastened with L key type plugs ?
Yes, my Pontiac 455, I also want to drill the little 3/16th hole in the back inside plug for distributor gear lubing ...
-- Edited by pontorquer on Thursday 2nd of June 2011 10:12:55 PM
Thanks Andy, I was thinking of doing this too as well ...
I did the same thing on my Ram Air III block back in 1996