341 C.I. is a 4 1/8" x 4 1/4" engine.
Seeing this, I re-read Tom Langdon's article on how he built his 341 in the March/April 1991 issue of 12 Port News (Vol 11. Issue 2).
He used 400 C.I. SBC pistons (TRW#L-2477) with 55-60 Chrysler 6 rods (Fed Mogul #R-22DD) as they are 7.81" long, and used Continental 6 cyl industrial bearings (Vandervell #VPR91846), narrowing the rod and cap to 1.430", and honing the small to accept the Chev pin.
To use these rods, the crank is offset ground, from 2 5/16 (2.3127") to 2 1/16" (2.0625") thereby stroking the engine by 1/4".
Looking st more "contempory" rods, I note that SCAT makes BBC rods that have a 7.1" long, and have a big end size of 2.2" diameter. Not quite the 1/4" stroke that is required, but may well allow for lighter factory-type pistons to be used.
I hope this helps some-one out there.
I'm looking st building a 302" out of a 261 Chev block, using the 3/16" pop-up pistons I have with 292 rods, and stroking it to suit the pistons. I'll probably do this after I've worn out the engine using smaller pistons, making it a 302 on its last rebuild.
Don't you just love the possibilities of bore and stroke combinations when working on old engines???