Quote:
Originally Posted by 78MayanW87
Here is a pic of #7 which in my opinion had the worst looking piston skirt of the lot. Would you rerun this? BTW...the block and crank are headed to Len Williams' shop tomorrow to be vatted, checked out and re-honed.
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Pictures are hard to tell, but the piston looks reusable in the photo. I would bring them along and have him look at the pistons, and check the rods for roundness. Usually the bigger problem when you see scratches on the pistons is honing out deep scratches in the bores.
Since you have it at a machine shop and are talking about some decent power upgrades, you might consider swapping in some ARP main studs and have it line honed. For 557 blocks used for performance applications the extra clamping force of the main studs keeps the main caps clamped down better and don’t let the caps walk around putting extra leverage on the dowels that index the caps. Those blocks like to start cracks at the hole drilled for the dowel, some have roll pins instead of dowels, they need the main studs also, the roll pin doesn’t do enough to keep the cap located. I think it is a very basic upgrade that helps the the 557 blocks survive more power, it is different than the earlier blocks that have blind dowel holes.