6.4s are the better rod, they are 6.2 Length,.945 wrist pin, the 6.1 rods are 6.242 with a .984 wrist pin, both are Forged Powder metal(what ever that is)
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*******I'm not 100% on this but I believe forged crank Eagle 5.7s(pursuit and 2500/3500 trucks) starting in 2014 have full floating pins , and the STD passenger car and 1500 series trucks are still pressed till 2016
Or Eagle engines with 3 bolt tone wheel are pressed and 4 bolt tone wheel are full floating.
AGAIN I'M NOT 100% sure

Last edited by ric3xrt; 04/11/18 10:02 AM.
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