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06-23-2017, 10:20 PM #1
5.85 vs 5.7 rods & pistons for boost
What are the compromises between selecting a 5.85" rod and pistons vs 5.7" in a boosted 383 on pump gas? Is there theoretically a more suprior set up? Is this mainly just a compromise between weight and ringland spacing and crown height?
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06-24-2017, 06:27 AM #2Xtreme Member
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- Apr 2010
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- Brian DeLuca
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- 1997 Trans Am WS6
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- Piscataway, NJ
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The 5.7 rod will give you a piston that has more meat up top but comes with more side load force. I originally had 5.7 rods in my engine but later switched to 5.85s during a rebuild to reduce the skirt wear. To be clear, the 5.7s worked just fine so it was a minor tweak to the rebuild which also included custom pistons.
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