Since all the small block guys are here... i am trying to decide while waiting on my machinist (only been 5 months so far) is there a good reason to not go 426 (4.180stroke) instead of 4".. staying under 6500rpm.. it's almost the same price..
no reason not to. why not go with more stroke? same price or close to it, no brainer to me. i went with a 4.125'' a few years ago (2013) and it peaked at 6900. 667 roller cam with W2 heads and tunnel ram. it's still making passes today.