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: 16,936 NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,936
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: 43,715 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,715
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: 2,726 Stuttgart, Arkansas
rickseeman
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master
Joined: Jan 2012
Posts: 2,726
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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