Closing angle 1953 -98 303cui ?

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Old May 15th, 2021, 06:38 AM
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Closing angle 1953 -98 303cui ?

Please can anyone tell me how to adjust original ignition ?

Everything built in new parts, engine running good but I want to check closing angle and so on .....

Thank you !!!
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Old May 15th, 2021, 07:09 AM
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I am not sure what closing angle is but I am guessing you are talking about point gap or timing since there is really nothing else to adjust on the ignition. The point gap is set with a feeler gauge at 16 thousandths. It is easier to actually remove the distributor to get an accurate setting. The timing is set with a timing light by turning the distributor.
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Old May 15th, 2021, 07:45 AM
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If by closing angle you mean dwell angle, it's 30 degrees for a V8. The usual way to do this is to set the points to 0.016" with a feeler gauge then use the dwellmeter with the car running to verify. Unfortunately it's a trial and error process since you have to remove the distributor cap to make any changes to dwell. On newer GM distributors with the window, you can adjust the point gap (and thus the dwell angle) with the engine running. The 303 distributor doesn't have that option.
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Old May 15th, 2021, 08:00 AM
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Maybe this video shows it better than I can describe because english is not my mothers language ...

https://m.youtube.com/watch?v=LTnkhw8SG7g
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Old May 15th, 2021, 08:15 AM
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Yes, in the US, that's called "dwell angle". See my previous post. 30 degrees for a V8.
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Old May 15th, 2021, 08:24 AM
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Originally Posted by joe_padavano
Yes, in the US, that's called "dwell angle". See my previous post. 30 degrees for a V8.
Thank you 👍
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Old January 2nd, 2022, 01:00 PM
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Happy new year !

I adjusted with the help of a friend but there still was a problem although I put all ignition parts new.

After seeking the reason for a while I found the electric choke stuck

So I cleaned it and now it works very good again !


So my friend was able to merry in the right car

But now there is still one question left.

What oil should I put into the original air filter ?

Last edited by stocki26; January 2nd, 2022 at 01:06 PM.
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Old January 3rd, 2022, 09:00 AM
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Any good oil will service, something in the 10-30 or 10-40 range, sorta depends on the general temperature rang you run in and the condition of your engine. I personally don't use synthetic because I get oil weep through cork gaskets when I do, but others do with no or little issues. A million answers to this question, most may very from mine, but this will work and give you no issues..... Tedd
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Old January 3rd, 2022, 09:15 AM
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Thank you, I supposed that my 20w50 is too tough for cold start

After cold starting the exhaust always draws black spots on the floor
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Old January 3rd, 2022, 09:18 AM
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Hey Tedd, he is talking about oil in the oil bath air cleaner. I would just use some 30W non-detergent which is probably the cheapest thing you can buy.
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Old January 3rd, 2022, 10:58 AM
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Oops, my mistake, should read twice post once. Probably 20-50 no problem on the air filter, black spots are most likely carbon and water vapor, not to worry.... Tedd
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Old January 3rd, 2022, 11:45 AM
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Thumbs up

Originally Posted by redoldsman
Hey Tedd, he is talking about oil in the oil bath air cleaner. I would just use some 30W non-detergent which is probably the cheapest thing you can buy.
Originally Posted by Tedd Thompson
Oops, my mistake, should read twice post once. Probably 20-50 no problem on the air filter, black spots are most likely carbon and water vapor, not to worry.... Tedd
Thank you !
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