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Old 09-28-2013, 01:14 AM
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'65-289 SBF distributor question

I would like to do away with the MSD 6A box & coil. I've got leads on several 600-650CFM carb, but that still seems like too much carb for the stock 289.
Since I'm also not familiar with the MSD stuff.....Q: can I get rid of the box & coil & still use the distributor alone?
I'll definitely appreciate as many opinions as I can get.

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Last edited by LATECH; 09-28-2013 at 07:01 AM. Reason: duplicate post in old thread and electrical question
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Old 09-28-2013, 06:55 AM
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If the coil is points you can easily run the distributor without the MSD box.
If you have a duraspark distributor with magnetic pickup , you want to run the MSD with it. It is a better system.
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Last edited by LATECH; 09-28-2013 at 07:01 AM.
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Old 09-28-2013, 11:00 AM
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Quote:
Originally Posted by swagoneer View Post
I've got leads on several 600-650CFM carb, but that still seems like too much carb for the stock 289.
If the secondaries are vacuum-operated, it's difficult to over-carb a motor. That's the beauty of a Rochester Quadrajet, tiny little primary bores and venturis for good mixing/fuel mileage and huge secondaries for power. If the motor hasn't sufficient vacuum to pull the secondarys open, then the motor will just run on the primaries the rest of its life. No harm, no foul.
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Old 09-28-2013, 01:00 PM
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Why would you want to "get rid" of the MSD box and coil? Even with a stock 289 this would improve your fuel economy over a stock unit, the 600 CFM Holley has been used on the 289 for years second only to the Autolite 4100 that Ford used however there is a new star which combines the best of both with some upgrades:http://www.summitracing.com/parts/su...00vs/overview/ also users have reported smoother running and 2-3 more MPG.
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