rods that use bolts with nuts like pictured below will be weakened if excessively clearance ground
stroker profile rods offer more clearance to cam lobes, and yes the stroker clearanced profile rods are available in both (h) and (I ) beam designs
I can,t remember, building an engine for anyone using stock or refurbished stock 3/8" rod bolt, connecting rods, or any using 3/8" rod bolts or stock connecting rods in the last 20 years or so on any SBC or BBC,engines simply because the cost vs strength makes that not a good idea as far as durability is concerned.
that, I've built but from what I remember they only provide minimally better clearances, and I've used mostly SCAT 7/16" ARP rod bolt rods on both BBC and SBC builds
http://www.scatcrankshafts.com/rods/
http://www.scatcrankshafts.com/product-search/
http://garage.grumpysperformance.co...troker-tips-by-len-emanuelson.1249/#post-3752
http://garage.grumpysperformance.com/index.php?threads/bits-of-383-build-info.18/#post-16221
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