540 crank internal or external balanced ?.
#2
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I purchased engine with no specs. 4.250 stroke forged crank. Is the S for Scat?. Logo below S, I don't recognize.
Last edited by B38; 09-22-2024 at 05:58 PM. Reason: Ad photo
#3
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Looks cast to me.
Pretty sure you can get a cast steel 4.25” external balances crank, so be careful.
Pretty sure you can get a cast steel 4.25” external balances crank, so be careful.
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liberator221 (09-24-2024)
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Tartilla (09-23-2024)
#5
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Is there a number on the front of the front counterweight ? That is where most aftermarket cranks are numbered. If the crank is standing on end you should be able to look down at it and see it.
That almost looks like a stock GM crank. Are you sure it is 4.250 stroke ? Somebody made a mess out of it drilling all of those holes.
That almost looks like a stock GM crank. Are you sure it is 4.250 stroke ? Somebody made a mess out of it drilling all of those holes.