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Just ordered crank for new motor, now I need to pick rod out. question is this: 3.75 crank and a 6.0 rod and the wrist pin will be in the oil ring. 5.7 rod and the rings are better but the ratio is not. So on a turbo motor which is more important? thanks for the help.
 

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Yea what he said!! Lol. #1 is piston strength #2 is rod length
 

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Custom Engine Shop
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Just ordered crank for new motor, now I need to pick rod out. question is this: 3.75 crank and a 6.0 rod and the wrist pin will be in the oil ring. 5.7 rod and the rings are better but the ratio is not. So on a turbo motor which is more important? thanks for the help.
Rod ratio, what is that about... this isn't a N/A motor. Ring stack is most important.
6.000
5.850
5.700
These are the common sbc sizes. Make sure the shorter rod will clear the weights on the crank.
 
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