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Old 09-03-2010, 07:11 AM
454C10 454C10 is offline
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you need lots more timing at idle.

only 11 inhg of vacuum at idle is a problem with a cam that small. should be getting about 17 at 800 rpms.

low timing and improper fuel ratio will reduce vacuum.

I would run 15 initial, with 10 more from the vacuum advance on a manifold source (25 degrees at idle with advance).

then 35 to 36 total mechanical plus 10 from the vacuum advance (46 total).

your distributor should be full adjustable.
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