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Rocker arm adjustment problem

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Old Jun 10, 2018 | 05:52 PM
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Default Rocker arm adjustment problem

From a previous post of the on going problem of adjusting my rockers I believe the suggestion that I have solid lifters and not hydraulics is the problem. Since I dont have the camshaft spec for my engine is there a nominal gap for setting the lifters I should use i.e. .002/3/ 4
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Old Jun 10, 2018 | 06:36 PM
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what is the engine?


.015 - .018 is used on lots of old cars.

Last edited by bobs77vet; Jun 10, 2018 at 06:40 PM.
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Old Jun 10, 2018 | 07:27 PM
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383, app. 425/450 hp very strong but dont have build sheet.
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Old Jun 11, 2018 | 07:50 AM
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my comp cams solid lifter is .026.
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Old Jun 11, 2018 | 06:57 PM
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I would set initially at about .020 then play around with it.......if it is really noisy....you may have a tight lash grind which likes about .015-.016.......if it sounds ok......then open it to .026 as stated above.....026 is used on many high lift/duration solids....the exhaust should go .028 for expansion.

have fun

Jebby
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Old Jun 11, 2018 | 07:01 PM
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we need to know ''solid or hyd'' first,,then you can find-out how to adj them[hyd lifter don't have a gap-solids do]

since you have the valve cover off,lossen up 1 rocker,then pull the push rod,look down the hole and on -top of the lifter is there a c-clip?

start there

Last edited by dmaxx3500; Jun 11, 2018 at 07:02 PM.
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Old Jun 11, 2018 | 11:02 PM
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From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
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you should be able to tell by tightening the push rods.....tighten it unitl there is no slop .....and see how far you can tighten it further....a flat tappet lifter will hit zero lash and no more movement pretty quick.....a hydraulic lifter you can depress a lot more before it bottoms out.

I bet a solid lifter would have no more then 1/4 of turn after it hits zero lash.

Last edited by bobs77vet; Jun 12, 2018 at 07:56 AM.
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Old Jun 12, 2018 | 01:17 PM
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the OP in another thread was given a method of determining solid vs hydraulic by Lars. I infer from this thread he performed the suggested test and determined it is solid.

https://www.corvetteforum.com/forums...lifter-id.html

Last edited by MelWff; Jun 12, 2018 at 01:18 PM.
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