440 Plug Gap with MSD Coil

[7Dcuda]

I've read here in the forum that plug gap should be .035 or .045 if using a high output coil.  Is the MSD Blaster 2 High Vibration coil considered a high output coil?  Thats the coil that I have but I do not have the MSD Igition Box....I have the Chrome Mopar Box.  I'm fixing to change my plugs (Champion RJ12YC) and want to know if I should be gapping them to .045.   

[Supercuda]

Basic rule for ignitions is this: if using the stock, points-style ignition, use the factory-recommended plug gap. If using an electronic ignition, increase gap to .045". Some very high-output ignitions can tolerate a wider gap, but I have seen no additional gains by increasing gap beyond .045". If using a power adder, your plug gap will need to change according to your needs with that setup.

[nqkjw]

I've got a Blaster 3 and 6AL with NGK BP5Ss at 34 thou.
Any wider and they foul too easy.
Every engine is different though and slight variations in gap will apply.

[Chryco Psycho]

I agree with the 40-45 thou , wider than that & you put too much load on the ign wires & no gain in power

[7Dcuda]

Thanks guys...I'l go with .040 - .045