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Old 02-11-2012, 04:24 PM
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want to know the difference

whats the difference in the 406 sbc with 5.7 rods an one 6 in rods

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Old 02-11-2012, 04:33 PM
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.3" difference in the pin location in the piston, ala different pistons and a different rod/stroke ratio.
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Old 02-12-2012, 11:02 AM
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Originally Posted by BIGDADDYC10
whats the difference in the 406 sbc with 5.7 rods an one 6 in rods
Scroll down on this page to Tech Tips - 2005 and read what Iskenderian has to say about it.

Then, there's the issue of the 6" rod putting the wrist pin up into the same area as the oil ring. I don't care for more complexity to support the rings, so I would use a 5.700" rod in a 383/388 build. Keep it simple.

As Ron Iskenderian says in the tutorial, change rod length ONLY when you have exhausted every other avenue in your quest for power.
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