Thread: decode my v6
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Old 04-27-2013, 03:01 PM   #14
MusicMan70
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Re: decode my v6

If your going to go this route(GMC V-6), I'd get the 401M or 478m and forget about swapping heads onto a 305. I believe the heads are the same on the 401M and 478M. Just pick up the extra cubic inches.
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