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flatjack9 · 05-25-2010, 06:13 PM

If I remember right, it looks like they run a tight lobe center to give it the "thump", but this also kills low end torque. Need a long stroke and lots of compression to compensate, but then why bother.

05-25-2010, 06:13 PM	#2
flatjack9 Senior Member Join Date: May 2010 Location: Oshkosh, Wi Posts: 4,608	Re: Thumpr cam If I remember right, it looks like they run a tight lobe center to give it the "thump", but this also kills low end torque. Need a long stroke and lots of compression to compensate, but then why bother.