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Timing with a Delco EST Distributor Printed From: CorrectCraftFan.com Category: Repairs and Maintenance Forum Name: Engine Repair Forum Discription: Engine problems and solutions URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=48160 Printed Date: May-04-2024 at 6:05am Topic: Timing with a Delco EST Distributor Posted By: Crmaverick Subject: Timing with a Delco EST Distributor Date Posted: October-21-2019 at 6:38pm I upgraded to a Delco EST this summer on my 454 h.o. I’m wondering where I should be at for timing? I bought a new timing light with a tach to check the advance. I’m running 30 degrees at 3,000 rpms and 38 degrees at 4,000 rpms. Does this seem a bit high? No pinging noise or evidence on plugs. Replies: Posted By: KENO Date Posted: October-21-2019 at 10:12pm Hi Mav I think I'd back it down to 34 to 36 at 4000 rpm. Maybe more depending on gas being used Did you set the initial timing at 10 with the timing shunt installed ? Posted By: Crmaverick Date Posted: October-21-2019 at 10:41pm KENO wrote: Hi Mav I think I'd back it down to 34 to 36 at 4000 rpm. Maybe more depending on gas being used Did you set the initial timing at 10 with the timing shunt installed ? I set at 10 idle with the shunt. With the shunt removed I’m at 18 degrees at 900 rpm. I’m running Sunoco 93 octane. I verified my tach is going wacko at 4000 rpms, and it starts to pull harder and rev out. I used the new timing lights built in tach and I reached about 5,000 rpms in this video. Sounds healthy with no knocking but could it be causing damage? https://drive.google.com/file/d/11TguC7qvluonjEvg5gU3OEuylHMHzk_j/view?usp=drivesdk" rel="nofollow - https://drive.google.com/file/d/11TguC7qvluonjEvg5gU3OEuylHMHzk_j/view?usp=drivesdk

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