Thread: MSD 6AL questions

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Looking for a new MSD box, I see they have the 6AL in both Digital and Analog.... Anybody have some thoughts on which is better with a carb engine running a crank trigger ignition????

The 6420 (6AL) is the analog unit and is a good unit to run on the carbed setup.
The 6520 (Digital-6) has extra bells and whistles. You'll see no performance or reliability difference between the two on your setup.

Thanks Nitro....figured that was about it, just wondered if I was missing something.

I've always had better reliability from the Mallory HyFire units, and, their 6AL has an adjustable rev limiter with no chips required.

Also, they're usually a little cheaper!!

Originally Posted by Geezer2

I've always had better reliability from the Mallory HyFire units, and, their 6AL has an adjustable rev limiter with no chips required.

Also, they're usually a little cheaper!!

Geezer - would have agreed with you up 'til the time that they became a part of ACCEL, then currently, all now a part of the Prestolite conglomerate

Originally Posted by Geezer2

I've always had better reliability from the Mallory HyFire units, and, their 6AL has an adjustable rev limiter with no chips required.

Also, they're usually a little cheaper!!

The Mallory crank trigger units look a bit easier to adjust---wondering if you've ever used one and how well they operate??? Only thing I've noticed is the Mallory crank trigger distributors are a bit taller then the MSD's--vertical clearance is one of the issues.....

The digital(6AL-2) unit has a higher spark output and they draw less current than the analog(6AL) unit. That said, I run the analog box and never had any issues....