383 mechanical cam valve adjustment - Team Camaro Tech
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post #1 of 9 (permalink) Old Oct 31st, 09, 05:01 PM Thread Starter
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383 mechanical cam valve adjustment

Is it possible to adjust the lash to spec, without having a cam card, and without the engine running...seem to me adjusting while the motor is running would make quite a mess!

Keith
1967 Camaro
406, 10:1, comp xr282HR, Dart Iron Eagle 200cc, Holley Contender dual plane, Holley 750 DP
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post #2 of 9 (permalink) Old Oct 31st, 09, 05:34 PM
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Re: 383 mechanical cam valve adjustment

By all means..you can set the lash non running with a mechanical cam.
As for the lash clearance without a card..you would need to pull the cam and hope a grind # is stamped on the end.
Not knowing for sure..intake .020",exhaust.022" with iron heads and block and then run lash loops from there.

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post #3 of 9 (permalink) Old Oct 31st, 09, 05:57 PM
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Re: 383 mechanical cam valve adjustment

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Originally Posted by fatblock View Post
By all means..you can set the lash non running with a mechanical cam.
As for the lash clearance without a card..you would need to pull the cam and hope a grind # is stamped on the end.
Not knowing for sure..intake .020",exhaust.022" with iron heads and block and then run lash loops from there.
X2..... On a solid cam its pretty easy but take your time and do one at a time... Also you can check each valve lash and note it down, once you finish then look for the tightest lash on the intake vrs the exhaust and go with that which will differ cold vrs hot and it all depends on iron or aluminum heads and block...

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post #4 of 9 (permalink) Old Oct 31st, 09, 06:41 PM
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Re: 383 mechanical cam valve adjustment

you don't ever want to set lash on a solid with the engine running.

Still the best way with a hydraulic, and depnding on the setup, it's not messy. Just gotta be quick.





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post #5 of 9 (permalink) Old Oct 31st, 09, 07:47 PM Thread Starter
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Re: 383 mechanical cam valve adjustment

OK...so how do you set the lash?

Keith
1967 Camaro
406, 10:1, comp xr282HR, Dart Iron Eagle 200cc, Holley Contender dual plane, Holley 750 DP
Muncie M-20
GM 8.5, 3.73 posi
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post #6 of 9 (permalink) Old Oct 31st, 09, 07:56 PM
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Re: 383 mechanical cam valve adjustment

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Originally Posted by keithl1967 View Post
OK...so how do you set the lash?
Here is a link on how to... Make you read and if you have solids you follow the solid instruction...
http://www.powerperformancenews.com/...ment-2076.html

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post #7 of 9 (permalink) Old Oct 31st, 09, 08:25 PM Thread Starter
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Re: 383 mechanical cam valve adjustment

how often should I have to adjust the lash?

Also, is there any sure-fire way to know if I have a solid or hydraulic cam? My springs are very large, (thich), which is why someone told me they assume it is a mechanical cam...

Keith
1967 Camaro
406, 10:1, comp xr282HR, Dart Iron Eagle 200cc, Holley Contender dual plane, Holley 750 DP
Muncie M-20
GM 8.5, 3.73 posi
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post #8 of 9 (permalink) Old Oct 31st, 09, 08:48 PM
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Re: 383 mechanical cam valve adjustment

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Originally Posted by keithl1967 View Post
how often should I have to adjust the lash?

Also, is there any sure-fire way to know if I have a solid or hydraulic cam? My springs are very large, (thick), which is why someone told me they assume it is a mechanical cam...
One way to check if they are solid or hydraulic is when you are ready to check valve lash and there is none then its most likely hydraulic but if you have say .020 then its a solid cam.

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post #9 of 9 (permalink) Old Nov 17th, 09, 08:30 PM Thread Starter
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Re: 383 mechanical cam valve adjustment

The lash is adjusted, and th emotor running better than ever...who'd thumnk it...

I hav enot put many miles at all on this motor since it was dropped in (came form another car), so I was not even sure I had solid lifters, but I sure enough do!

Anyway, how often should I expect to have to make lash adjustments on the solid cam?

Keith
1967 Camaro
406, 10:1, comp xr282HR, Dart Iron Eagle 200cc, Holley Contender dual plane, Holley 750 DP
Muncie M-20
GM 8.5, 3.73 posi
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