Big Inch Small Block

33IMP said
Acquaintance of mine ran a 468 in his 71 demon for several years. Cover car on Mopar Muscle, street driven nine second n/a car. Also had a later build Valiant on the cover too.
He built a 502, (yes, small block) but it was just too over the top, internals were too light, it didn't last long. While it was running, it made power!
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33IMP said
I don't recall. What ever the maximum bore was of a race r-block, light small Chevy rods, with light pins, Honda rod journals, hockey puck pistons, billet crank with 4.25 stroke (at least, may have been more). Dry sump.
If memory serves, it kicked a rod out. Chevy part.
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4.25" stroke would need a 4.336 bore - which would work in a BB, but not a SB? A 4.5" stroke would need a 4.213" bore, and I think R blocks could go 4.220 - so maybe it was a 4.5" stroke? That would be a monster. R/S ratio would be around 1.36 though - not a good ratio for longevity LOL.