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you can go 4.25 stroke.


I can use rb rods(gotta be Mopar), this much stroke increase & still have enough CH distance left to use a 400 block?




no , you have to use a 6.535 rod to go that big in a low deck , by doing that you can use an off the shelf 1.320 CH piston .


Thank you double R. & I too cringe when I see(or hear) chebby & 383 in the same sentence/breath. I believe that if the clearances//balancing/oiling is spot on that 6200 is liveable with a cast crank,maybe even 6500. I am a firm believer in Sanborns circle track SB oiling mods over at moparchat.com that can be adapted to BB's.


live every 24 hour block of time like it's your last day on earth