spark plug gap for msd

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Mar 12, 2003 | 12:05 AM

mike460

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Joined: Feb 2001

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From: atl

spark plug gap for msd

hey guys, im sure this has been discussed before, but the search thingy wont allow words less than 4 letters...ie msd and gap....
i have an msd billet distributor, msd blaster coil, and msd 6al box...what kind of spark plugs should i run and what gap? it has pi heads, stock pistons....78 model...headers, edelbrock performer rpm and 750 carb.....just tryin to throw out as much as possible. thanks for any info

mike

Mar 12, 2003 | 10:06 AM

Just Strokin

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Joined: Nov 2001

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From: Tallassee, ALabama

spark plug gap for msd

I'd start with a gap of .040-.045".

Got to http://www.msdignition.com/downld.htm and then click on the instruction download for the box you are using.

Mar 12, 2003 | 11:55 AM

cjcathey2002

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From: USA

spark plug gap for msd

i run mine at the stock recomended gap of .044. have run them like this for about a year and a half. no problems and i have a lot of performance over stock, i would say that the ignition was one of the best upgrade. this summer i might play with the gapping a little. the directions said you could open them up to .055 or.065 if i remember correctly. just run stock first then after you get everything running good go back and open the gaps up a little at a time until you notice the performance drops off, then close them back up to the last position you had them at and the trck was running good. good luck.