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post #1 of 10 (permalink) Old 05-08-08, 07:21 PM Thread Starter
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oil galley restrictors

i cant find any info on what i need to install oil galley restrictors in my 390s heads they are edelbrock prformer rpms i also heard i need to enlarge the oil return passage please help

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post #2 of 10 (permalink) Old 05-08-08, 11:29 PM
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Re: oil galley restrictors

The Edel heads that you have already have smaller than stock sized oil flow holes to the rockers and the oil returns should be big enough to handle plenty of return. Street or strip those Edelbrock heads are made to bolt on and go.
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post #3 of 10 (permalink) Old 05-09-08, 04:39 PM
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Re: oil galley restrictors

You can smooth and contour the return holes a bit to direct flow. They can use a little TLC there. Also ARP sells a rocker stud kit which is recommended. Springs are ok if your cam is in the .580 max range. Anything more you'll want to match valvesprings to the cam.
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post #4 of 10 (permalink) Old 05-09-08, 04:42 PM Thread Starter
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Re: oil galley restrictors

thanks kd i will take your word for it and slap em on there
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post #5 of 10 (permalink) Old 05-09-08, 04:48 PM Thread Starter
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Re: oil galley restrictors

i would still like to know what i need to install the restrictors on the factory cast heads ienlarged the oil passage from the oil pump to the filter housing and installed the bigger holed housing also has a high volume pump
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post #6 of 10 (permalink) Old 05-09-08, 06:13 PM
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Re: oil galley restrictors

Nothing. You drop the jet in the hole and go. The L shape of the oil passage holds it in place. Some get fancy and tap in threaded plugs and drill the centers to size.
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post #7 of 10 (permalink) Old 05-10-08, 08:56 AM Thread Starter
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Re: oil galley restrictors

i thank you all for the info p.s. anyone know much about adjusting the erson roller rockers with hydraulic lifters
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post #8 of 10 (permalink) Old 05-10-08, 09:35 AM
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Re: oil galley restrictors

I am running a set of roller rockers on my 428 w/hyd. lifters and have no problem. Since the hyd. lifters have a bit more travel and give you have to adjust the rocker a couple of times to get them to be quiet. example: after I ran the engine hard and when the RPM's decreased there was a bit of lifter ticking, but still quiet at idle and normal running. I kept adjusting 1/8 of a turn untill the ticking went away, it's now quiot at any RPM.
To adjust loosen the nut and then tighten the screw to desired setting then tighten nut.
It's fairly simple
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post #9 of 10 (permalink) Old 05-10-08, 01:00 PM
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Re: oil galley restrictors

You might need to try a few sizes before you get it balanced to your liking. .080-.060 seems to be the normal range of the hole size favoring closer to the .060. You do want some oil to cool the valve springs just not a Texas flood.
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post #10 of 10 (permalink) Old 05-10-08, 01:46 PM Thread Starter
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Re: oil galley restrictors

thank you all you have been lots of help
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