MSD 7AL-2 or AL-3

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01-29-2011, 04:39 AM

jreiley

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MSD 7AL-2 or AL-3

I have a blown BBC that is getting close to completion. I have a 7AL-2 ignition. MSD Tech says I need a AL-3. Any opinions of the above. Thanks.

01-29-2011, 04:47 AM

shawnp

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Nothing but problems with the al3. I had a brand new one out of the box go bad. I had to carry a spare and it too was bad out of the box. If you have to update, I would seriously look to move to the Digital stuff.

01-29-2011, 08:32 AM

jreiley

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Like a digital-7?

01-29-2011, 08:33 AM

jreiley

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Like a digital-7? I have a digital-6, will that work.

01-29-2011, 12:47 PM

TS1955

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Alot depends on how much boost you are going to run. If this is a race engine and going to make more than 12 lbs of boost, then you might consider an MSD 8 or even a MAG. This is what MSD told me when is was messing with blower motors.

TS1955