Re: Oil system modification to big block
[Re: lancer493]
#2902965
03/26/21 11:15 AM
03/26/21 11:15 AM
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Joined: Jan 2012
Posts: 2,652 Stuttgart, Arkansas
rickseeman
master
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master
Joined: Jan 2012
Posts: 2,652
Stuttgart, Arkansas
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I can't believe more people don't do that mod. Keith Black's used to sell that plug but I forget who has them now. Sorry. Somebody younger will chime in.
2011 Drag Pak Challenger
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Re: Oil system modification to big block
[Re: lancer493]
#2903008
03/26/21 01:30 PM
03/26/21 01:30 PM
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Joined: Aug 2003
Posts: 43,219 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,219
Bend,OR USA
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I had to block off the left side oil galley only on a early Hemi ( 1965 or 1966 block, CRS) block when switching from a solid lifter cam and lifters to a solid roller lifter kit, one of the driver side lifters would expose the oil galley and make the oil pressure dance and fluctuate I ended up having to drive in two small plugs, the first one work for awhile and then must have twisted enough to allow oil pressure up to that lifter hole The second stay put and work from then on I found out after that there are several brands of solid roller lifters for BB Mopars that have a skirt on the oil galley side to fix that issue, Engle, Crower and maybe several others now
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Oil system modification to big block
[Re: lancer493]
#2903061
03/26/21 04:11 PM
03/26/21 04:11 PM
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Joined: Jan 2003
Posts: 31,048 Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 31,048
Oregon
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I am using a solid body Comp roller lifter, no push rod oiling.Did not drill a hole in expansion plug used as a block.Race only motor. Splash oiling is sufficient? Thanks Bill If the engine is apart I'd drill a small hole in the plug. If the engine is together then run it and see what the lifters look like. If they are galled up then drill a small hole in the plug.
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Re: Oil system modification to big block
[Re: Ody1003]
#2903077
03/26/21 05:03 PM
03/26/21 05:03 PM
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Joined: Jan 2003
Posts: 16,928 NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,928
NC
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It takes a 19/32 freeze plug drove in drivers side rear of oil galley. Carefully drive it just past the oil pressure feed hole. I saved this from years ago. Same as above. On the rear of the block, remove the pipe plug on the drivers side of the block next to the camshaft. You will need a 19/32 freeze plug. Install the 19/32 plug into the oil galley on the drivers side of the block. Drive the plug into the block about 1 1/4 inches or until you can see the passage coming across the back of the block that feeds the oil to the drivers side galley. Clean and install pipe plug. Oil is now cut off to the lifters on the drivers side of the block.
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Re: Oil system modification to big block
[Re: lancer493]
#2903108
03/26/21 06:29 PM
03/26/21 06:29 PM
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Joined: Mar 2011
Posts: 3,083 Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,083
Michigan
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Been a while since i had to do this but I found a piece of bar stock a better choice.
I don’t recall the diameter so start with a fuel pump pushrod to gauge the bore of that passage and work from there in finding a suitable size rod.
The nice thing about the rod is it can’t move, is easy to remove from the engine if you decide to undue it.
You don’t have to remove the trans or pull the engine from the dyno to undue.
The plug goes in from the passenger side if I recall and allows the oil pressure to be read from the passenger side port.
Last edited by Transman; 03/26/21 07:51 PM.
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Re: Oil system modification to big block
[Re: lancer493]
#2903509
03/28/21 06:56 AM
03/28/21 06:56 AM
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Joined: Oct 2006
Posts: 596 Mass.
80fbody
mopar
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mopar
Joined: Oct 2006
Posts: 596
Mass.
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Thanks all for the suggestions. Had decided to give up on the idea until I read Doug's post. Excellent idea very easy to accomplish with simple hand tools and a wooden pencil. Had to drill small bottom lip out of pass side sending unit hole, "carefully" with sharp, but blunt angle tipped 3/8" driill bit.The small oil galley passage leading down to the drivers side is already 5/16" dia. ,perfect for a 3/8- 16 tap. Threaded that passage at the top 3/8" deep. Drilled .062" hole in center of Allen head set screw, 3/8"-16 x3/8" long set screw.Inserted set screw with some medium lblue loctite into now threaded portion ofpassage leading to the driver side oil galley. Great effective modification and definitely will stay in place. Anybody that wants any 19/32 freeze plugs is welcome to them. I will mail them to you free. Thanks Doug (DVW) for the great idea!! Thanks Moparts! Oh yeah, cut wooden pencil in pieces long enough to drop in both oil passages while I was drilling and tapping to help minimize clean out of left over chips and debris before cleaning out all passages. Picked the pencil lengths out and blew out passages. easy fix! Bill Got a pic of the finished mod? Doing some oiling mods myself.
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