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08-03-2010, 07:04 PM
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MSD pro billet question
I am closing in on completing my first engine build. its a 383 SBC with a moderate cam. I told the guy where I bought most of the parts that it was going to be a street/strip vehicle but that I wanted it to be "streetable." I was not familiar with the differences in distributers at that time, and the guy recommended the MSD pro billet mechanical advance. Now that I have done some research, I'm concerned that without a vacuum advance, this distributer may not be friendly to a street vehicle. I'm not real concerned about fuel economy but I want it to run reliably at lower rpms. Bottom line - do I need a different distributer? ...btw the distributer is already in the motor so I won't be able to return it - not fired up or timed yet.
Thanks! Chris 
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08-03-2010, 09:10 PM
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If you're not that concerned with fuel mileage, then you've got exactly the right distributor, I wish I had one in every small block I own,
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08-03-2010, 09:18 PM
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Thanks for the reply! That makes me feel better. I was really starting to panick after reading some posts on other sites. There were mentions that this distributed was for "racers only".
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08-03-2010, 09:29 PM
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I've got the pro billet vac model running a 6AL box and love it. My plugs have never looked so good.
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08-04-2010, 06:33 AM
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I have the Pro Billet with vac advance in my '31 with Ford power. I tried it without the vacuum advance (modified using the MSD instructions) and didn't like the way it ran even up and down my driveway(before registering) - either full on or not at all. Unfortunately it appears that the distributor you have if it's the 8570 can't be modified to accept the advance. Sell it here on the classifieds - someone will want it for near what you paid. You need the 8361 and you can go either way.
Dave W
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08-04-2010, 09:25 AM
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Dave - that's what I was afraid of.
 I checked msd's website and you are correct, it can't be modified to accept a vac advance. I guess I will be putting it up for sale. If anyone reading this thread is interested, let me know.
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08-04-2010, 10:29 AM
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Quote:
  Dave W
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