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Old 11-04-2008, 12:42 PM
darrenmuncy darrenmuncy is offline
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Unhappy 460 question

Hi Guys I have a 1974 f100 with original 460 that has been gone through.
the question i have is what is the total advance 20deg btdc?
my setup is as follows stock bottom and heads Eldibrock preformer plus cam with stock timing chain.
stock manifolds 2&1/2 exhaust with procomp non vacume advance distributor.it has new stock motorcraft carb.
the issue i have is it dosent smooth out til around 3000 rpms it also backfires ? any help would be greatly appreciated.
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Old 11-05-2008, 02:11 AM
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I have my 466 set at 9* BTDC w/o the vaccum advance hooked up.
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Old 11-05-2008, 06:37 AM
darrenmuncy darrenmuncy is offline
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Question Thanks but i was looking for total mecnanical advance

Thank you for the base advance BTDC at idle I'm looking for total mechanical advance at 3000 rpms.
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Old 11-14-2008, 02:54 PM
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It should be around 10* BTDC at idle, and depending on your cam, and ignition, it should be at around 34* of total advance, give or take a few degrees.
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Old 11-14-2008, 02:54 PM
 
 
 
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