Swapping to LS6 crank - rebalance?
Swapping to LS6 crank - rebalance? I'm putting a low-mileage LS6 crank into my '98 vette motor. Do I have to rebalance everything for the new crank, or should it still all be balanced the same? Engine has stock '98 rods and pistons.
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Joined: Apr 2006
Posts: 1,875
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From: Naperville, IL
why are you doing that? ls6 crank and ls1 crank is the exact same thing. You didn't buy this thing off ebay did you?
Well, I'll assume something happened to your stock crank since you're changing it, and yes, you should have the entire rotating assembly balanced.
Well, I'll assume something happened to your stock crank since you're changing it, and yes, you should have the entire rotating assembly balanced.
Don't think you can get by without balancing the rotating assembly....not a smart move. Anytime ANYTHING is changed in a rotating assembly it is a good idea to have it checked. I even go to the extremes of balancing clutch assemblies.
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Yeah, it's out, actually all disassembled. It was more of a hypothetical question. I was just trying to see if there was enough difference between a stock LS1 crank out of a '98 vette and a LS6 crank out of a '02 Z06 to need a whole rebalance. From what everyone is saying it looks like I need to get it all rebalanced. I was going to do it, but then I heard elsewhere that the difference in cranks wasn't great enough to warrant a full rebalance.
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Originally Posted by Quick Double Nickel
Yeah, it's out, actually all disassembled. It was more of a hypothetical question. I was just trying to see if there was enough difference between a stock LS1 crank out of a '98 vette and a LS6 crank out of a '02 Z06 to need a whole rebalance. From what everyone is saying it looks like I need to get it all rebalanced. I was going to do it, but then I heard elsewhere that the difference in cranks wasn't great enough to warrant a full rebalance.
Regardless if it would work or not a true balance at the machine shop will bring things much tighter than factory standards. If doing all the work I'd get some forged pistons and inexpensive rods or bush the stockers for a floating pin.
