Re: 400 B oil mods
[Re: VernMotor]
#1339119
11/21/12 09:08 PM
11/21/12 09:08 PM
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Joined: Oct 2003
Posts: 3,698
NE Oklahoma
Von
master
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master
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Quote:
[
17/64 and 9/32 is the same thing 
9/32 is 18/64??
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: 400 B oil mods
[Re: VernMotor]
#1339123
11/22/12 10:07 AM
11/22/12 10:07 AM
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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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Quote:
http://www.moparts.org/Tech/Archive/bb/12.html
Quote:
Also, from the rear of the motor, take out the oil galley plug on the drivers side of the motor and push a freeze plug into the bore just past the feed that goes to the oil pressure guage ports. It's a 15/32" I think, I'll have to look at my papers at home. Do this mod only for a solid or roller cam as it blocks the oil off the lifters. You can drill a 0.10" hole in it to let a little bit of oil go through if you want. This mod greatly increases the amount of oil availible for the main and rod bearings.
I believe that plug is 19/32". I just helped a buddy with his B-engine stroker. We found this info in Hensley's Racing Ent. "Little Purple" Book that Herb McCandless wrote. Yeah, it's for solid & roller cams only
An old article written by Herb McCandless, says 19/32".
This keeps oil pressure if a lifter pops out on that side of the engine. For example if a rocker breaks and the pushrod comes loose. This is race only, but you can put a small hole in the plug (0.060"-0.100") if you want some oil besides splash oiling to the lifters on that side.
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Re: 400 B oil mods
[Re: Biginchmopar]
#1339124
11/22/12 03:58 PM
11/22/12 03:58 PM
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Joined: Aug 2003
Posts: 43,228
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,228
Bend,OR USA
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Quote:
Have any of you guys done the freeze plug trick in the back of the block?
I don't think I did that on the last motor I built. It is a solid roller motor.
Thanks for the help! 
I have on Hemi motor that had the drivers side oil galley machined higher in the block than the passenger side, it would expose the oil galley at max lift with a old set of non skirted solid roller lifters, I put in a small, can't remember the size now, welsh, freeze plug  I ended up having to put two of them in, the first one turned sideways after running the car at a couple of races and started pulsing the oil pressure at idle, the second one never turned
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 400 B oil mods
[Re: Cab_Burge]
#1339125
11/22/12 04:16 PM
11/22/12 04:16 PM
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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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When I worked in the block department at Keith Black's I reamed (don't remember the size) the drivers side lifter galley from the rear (don't remember how deep) and drove in a little aluminum plug to block off that side of the lifter galley. I don't see those plugs for sale anymore, don't know why. It thought it was a good thing.
2011 Drag Pak Challenger
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We just tap a hole in the oil pump run a line to back of the block re install where the oil sender is,(other hole), then restrict the top end of the oil galley going to the head we have never lost a bearing 
