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#1
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The trans is a muncie 4 speed. Not sure on the rear gear ratio.
The pistons are speed pro. I think thats what they are called. They come in a Black box with red lightning bolt. Think they have dual valve reliefs So is the Wallace racing calculator not correct in this case? Sent from my iPhone using Tapatalk |
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#2
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Thinking back, I think those 13 heads are around 78 to 80cc`s anyway. Not the 72 that the "book" says. 12`s are closer to 72cc`s.
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