I was thinking out loud like I always do about tall decks, cranks, strokes, rods etc.
Let's say I have a piston with certain compression height designed for 4.250 crank and rod of 6.385...in very simple terms that is the equivalent of 10.635 crank/rod combo length---right/wrong?? So along those lines would a 4.00 crank and rod of 6.635 inches yield the same results if all other things were identical? I know 6.635 rods are rare and I am in no way saying I am doing this presently(maybe 12 months from now) but a 4.00 crank saves alot of machining to clear even a 4.250 in some instances (and more common). Again it was just my brain on boredom!
I am having a 496 built right now, and got hold of another virgin 4 bolt, siamese bore, tall deck standard bore, and original deck height. Why have only one project going when you can drive yourself insane with two?!
68 plain old stocker Maro. 350/350 LeMans Blue, Black insides...496 in the garage waiting
1st off, tall deck BIG TRUCK 366 and 427 blocks are not siamesed! Only Bowtie and aftermarket block's!!
2nd, a tall deck block is .400" taller so use FOR A 496 in a tall deck block at least 1/4" longer rods and adjust piston compression height. And I figure .400" longer rods can be used too! Please run the numbers here to check for sure.
And you may want to look into the rods out of a Vortec 8100 BB b/c they are LONG due to it being a 4.25" b x 4.37" s = 496" tall deck w/ SB LS-type heads, BB stock engine!
you can put some more crank in that tall deck 427, i would put the 4.25 crank in a short deck , but u can go 4.5, 4.625, or 4.75 in the tall deck. bigger=happy borexborexstrokex .7854= cu in per hole x 8 holes=v8 bore it .100 to 4.35 go big