Quote:
Originally Posted by hurryinhoosier62
The rule of thumb I was taught was .135 MINIMUM on the primary thrust wall and .100-.110 MINIMUM on the other walls. This assumes you are using the engine for street use ONLY, are utilizing the lightest piston/pin/ rod combination you can afford and are keeping the RPMs down. The lighter the reciprocal mass the less stress on the cylinder walls.
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Thanks hoosier, using those numbers, looks like boring out another 0.030” would cause issues in most of the cylinders. Thrust sides on Cyls 5 and 6 being the most affected. I was hoping to reuse the OE cast rods that came with the block, they’ve already been redone with ARP studs. I know Eagle h beams would be lighter, but if I’m springing for forged pistons/rods, it doesn’t make sense to not build a stout 455 with 9.5 or so compression and a RAIV cam. And it seems the vibe is that this block would be the weak link in that setup.