[Formulajones]

Originally Posted by 78w72

i was just going to post the msd chart, they say .050-.060 for "up to " 10.5. i assume thats with one of their coils or another big stand alone coil & im sure the CD makes a big difference vs a stock hei.

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I wonder how long they've promoted that info and/or if anyone has bothered to report back their experiences with that. I feel like it's more regurgitated info from the HEI days in hopes to sell more MSD stuff.

3 MSD boxes here. 2 of them with billet distributors, one a stock points distributor. All 3 have the zapper MSD coils.
One is 11:1 with iron heads. The other 2 are aluminum heads, one with 10.2:1 compression and the other with 10.84:1 compression.

They are all gapped at .035. No misfire problems with any. The stock points distributor with a digital 6 box and MSD coil goes to 7000 rpm. The other two see 6000-6500. 2 of them run Autolite plugs and the other one has NGK.