Spitting and sputtering

ramman7284 said

Before I bought the dist and coil summit and msd told me that it doesn't plug into the stock harness cause my stock dist is a dual pick up coil. The msd wiring is on wire goes to coil positive other goes to coil neg another to engine ground and the last wire is a tach signal

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We need more details than this------EXACTLY how did you wire it. There are easy pitfalls with wiring up the MSD

1--You cannot hook the tach to coil neg, in general

2--MSD 6 series boxes use a big red for main power which must be wired to a substantial battery connection.

3--The small red is a trigger wire, and you need to be sure it has both ignition and start wire, IE detail what/ how you handled the original ballast resistor wiring.

4--What are you running for a distributor and HOW EXACTLY did you hook it up


Or----are you running something different?

DETAILS..........................................Saying that you are "running MSD" is like saying "I own a GM"---too generic