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Old 04-21-2007, 09:19 AM
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Stroker Clearance Methods and bearings

Hey Guys,
I've searched the forum and have gotten insight on methods of grinding on the block for stroker clearance, but not sure about the details.
I understand that I need to install the main bearings, crank, 2 rods and pistons (minus rings) on the same journal. Then rotate the assy enough to see where contact with block is made and mark it.
Do I need to remove everything before grinding, or is there a way to cover up the rotating assy to keep the grinding debris from getting all over the new parts and scratching the pistons, bearings, and cylinder walls?
I believe I'll have to remove everything, but was hoping there might be a less
time consuming method that I'm overlooking.
On a different subject, I think I purchased the wrong bearings for my set-up.
I bought Sealed Power bearings from Summit. PN 4663 main, and 2555cp rod.
There is an ever so slight chamfer on the edges, as if perhaps from a deburring tool, but I don't believe it is enough to clear the radius on my Scat 9000 Chevy crank for 6" inch rods. Can I use these bearings just for the trial assy for grinding the block, or will they damage the crank or rods?
Does anyone know what bearing PNs I should use for a street stroker with
Scat components?
Any info would be a great help!
SS Monty

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Old 04-21-2007, 11:39 AM
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Plan on cleaning everything after you are done clearancing. Everything.

The crank you have is designed to be used with the stock-type bearings that you have. If you want to upgrade to a better bearing that gives you a little more clearance at the radius, you can use Clevite CB663H rod and MS909H main bearings.

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Old 04-21-2007, 12:36 PM
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Thanks alot for the bearing information Machine Shop Tom!
I owe you one!
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