Where do you find timing numbers?
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Senior User
Joined: Dec 2005
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From: Scottsdale
Where do you find timing numbers?
It seems that almost every person you talk to has a diferent opinion on what timing should be for a specific motor. For my '73 351w I've gotten 4 different numbers, Chilton has the wrong firing order and a nother number and the other rebuild book had yet a different number.
Is there a source that is more constant than another, and is it sometimes just what works for someone with trial and error. I always thought it was an exact science.
Is there a source that is more constant than another, and is it sometimes just what works for someone with trial and error. I always thought it was an exact science.
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Joined: May 2003
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From: south louisiana
No matter what the factory spec is, you can't go wrong setting it at 10-12*BTDC. The 60's to 70's factory spec for just about all Ford V8's was 6*BTDC. Run it at either and you'll keep it advanced to 10-14*BTDC.
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Joined: Jun 2003
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From: Calhoun GA
^ and you can keep advancing it until you hear a little knocking. From there, just back the timing off some or go with a higher fuel octane. Do not use this method if you plan to use a power adder of some kind (supercharger, turbo and/or nitrous).
Thread Starter
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Senior User
Joined: Dec 2005
Posts: 397
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From: Scottsdale
It seems that almost every person you talk to has a diferent opinion on what timing should be for a specific motor. For my '73 351w I've gotten 4 different numbers, Chilton has the wrong firing order and a nother number and the other rebuild book had yet a different number.
Is there a source that is more constant than another, and is it sometimes just what works for someone with trial and error. I always thought it was an exact science.
Is there a source that is more constant than another, and is it sometimes just what works for someone with trial and error. I always thought it was an exact science.
