Base Timing question
Thread Starter
Instructor
Joined: Aug 2004
Posts: 220
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From: Flushing MI
Base Timing question
I have a 69, 350cu, 300 hp and stock distributor with points.
I just rebuilt the stock distributor and used the stock advance springs. The dwell is set at 30 deg. I tried to set the timing to 4deg BTDC but would not run smoothly until I advanced it to 14 deg at 700 RPM.
BTW All adjustments was made with vaccum hose disconnect and plugged. I reved it up to 1000 RPM to check if the mechanical advance is working and it does advance.
Any ideas on way I can not get it to 4 deg ?
I just rebuilt the stock distributor and used the stock advance springs. The dwell is set at 30 deg. I tried to set the timing to 4deg BTDC but would not run smoothly until I advanced it to 14 deg at 700 RPM.
BTW All adjustments was made with vaccum hose disconnect and plugged. I reved it up to 1000 RPM to check if the mechanical advance is working and it does advance.
Any ideas on way I can not get it to 4 deg ?
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
i don't know your engine but most of the high performance engines have a higher initial base timing then 4*.....14* sounds right to me....how does it run....if its not detonating and runs well theres your answer.
Thread Starter
Instructor
Joined: Aug 2004
Posts: 220
Likes: 0
From: Flushing MI
Originally Posted by bobs77vet
i don't know your engine but most of the high performance engines have a higher initial base timing then 4*.....14* sounds right to me....how does it run....if its not detonating and runs well theres your answer.
Will it hurt the engine in anyway as long as no denotation is present?
Should I be worrying only about total advance and not base?
Forgot to mention, it runs a little sluggish.
Last edited by ckerch; Jun 6, 2005 at 10:01 PM.
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
go to corvette faqs and look for Lars paper on setting timing he explains it better then any one else....or even do a search on timing theres lots of info out there...let me get you a link hold on
http://forums.corvetteforum.com/show....php?t=1059896
http://forums.corvetteforum.com/show....php?t=1059896
Last edited by bobs77vet; Jun 6, 2005 at 10:10 PM.
