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V.advance setting?

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Old

Feb 3, 2013 | 01:50 PM

#1

F-250 restorer

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From: Near Los Angeles

V.advance setting?

I was checking my v.a. on my distributor. I noticed it begins to advance at about 900 rpm. Is that normal? I have an Isky 256 cam, with power band from 1500 rpm up.

Where would be the optimal setting for mpg and power?

Thx.

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Old

Feb 3, 2013 | 02:16 PM

#2

devino246

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From: Lynchburg, VA

If it's running on ported vacuum, it should begin advancing just as you start opening the throttle plates. The mechanical advance should advance it further as RPM increases.

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Old

Feb 3, 2013 | 03:19 PM

#3

montana_highboy

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From: Big Sky Country

Quote:

Originally Posted by F-250 restorer

Where would be the optimal setting for mpg and power?

If you have an adjustable canister you can tune the vacuum advance for optimum performance, otherwise, a non-adjustable canister has a preset amount of advance built in, typically anywhere from 8-15 degrees.

The link below explains how to dial in the vacuum advance, if your motor is so equipped...

FORDMUSCLE webmagazine: Timing is Everything - Distributor Curving for Maximum Power

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Old

Feb 3, 2013 | 03:47 PM

#4

F-250 restorer

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From: Near Los Angeles

Quote:

Originally Posted by devino246

If it's running on ported vacuum, it should begin advancing just as you start opening the throttle plates. The mechanical advance should advance it further as RPM increases.

Quote:

Originally Posted by montana_highboy

If you have an adjustable canister you can tune the vacuum advance for optimum performance, otherwise, a non-adjustable canister has a preset amount of advance built in, typically anywhere from 8-15 degrees.

The link below explains how to dial in the vacuum advance, if your motor is so equipped...

FORDMUSCLE webmagazine: Timing is Everything - Distributor Curving for Maximum Power

Thanks for both replies. I'm still learning, and the forum is so valuable. Thx

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