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just curious to why your going with the 3.79 vs the 4.00 stroke. seems like more cubes the better. what are the benefits of the shorter stroke?
A shorter stroke engine it is easier and quicker to go up in the RPM's. Typically with a shorter stroke engine you can turn more RPM than with the longer stroke due to the rotating weight and centrifical forces that are increased as your stroke gets longer.
Then why stroke it at all?
Why not shorten up the stroke? I have seen a few cranks under 3 inch stroke for the SB, those motors must have been real fast 
BTW A shorter stroke tends to end up with heavier reciprocating parts, ever compare 340 and 360 pistons? 
Measure the bore difference and then ask again. Yes the 340 piston is heavier because it is a bigger bore. Go find some 318/340 stock rods and weight them against a 360 stock rod. Then just for kicks weigh them all against a 273 rod. The 360 rod is the heaviest out of them all. 318/340 use the same rods. Why is that? Not trying to start any kind of anyone is wrong kinda deal. Just going with like I said earlier what I know and what I've been told.
I don't know many that put stock rods in a stroker making much steam . I didn't even use them in my 340 build years ago.
I was using as a base idea for the arguement. Aftermarket makes the same rod for all three. same weight and what not and he would be correct that the 340 piston would weigh more because it is bigger in bore size.
The 340 piston is a lot heavier because it is a lot taller due to the shorter stroke. The .040 bore is insignificant compared to that. You have also received some bad information about what rods came in what SB... the 273-and 318 used the same rods even the poly 318 until 69 at witch point they did away with the 273 and began using the 340 rod in the 318 and when they came out with the 360 it got the same rods. The only real differance is the 340 rod was bored and honed out to fit a bushing. All 318s and 360s after the early ones used the same "645" rod even the magnum rods starting in 92-93 that were narrowed just a hair on the small end. The early 273-318 rods are the lightest and have bushings for floating pins. All other SB rods besides the early 273-318 rod are almost the same weights and are interchangable. Before the aftermarket was flooded with cheap rods a lot of guys put the early 273-318 rods in the 340-360 to lighten them up a little and get floating pins. Every single SB rod ever stuck in an engine at the factory was the same length.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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