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My first sprint engines in the early 80`s had a 3 9/16 stroke. Not sure of how your crank ended up with this stroke but on mine I would get a run of the mill 350 steel crank (3.48 stroke) with large journal (2.100) and have it offset ground to small journal (2.00) with 3.562 stroke. I would use the stock small journal rods with 11/32 rod bolts and ross pistons in a 400 block.
The cranks would only last 25-30 races before they were cracked so I would keep a fresh one in stock. I ran this combo for 4-5 years with a wing and only ever had one rod failure. $1000 short blocks, those were the days!
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