Joie_C

I have a 98 ls1 block that spun a rod bearing pretty much killing the crank. The local machine shop (which I trust) says they can't tell if its good without checking/tearing into it (costing me money). They want $230 to take .010 out of it and go from there. Id rather just buy someones good 5.3 crank which can be had in my area for $100.
My question is, whats the difference between the two, and can I just use a 5.3 crank and send it? My budget is low and I don't wanna risk spending $230 on the crank and it needing more to be ground out of it.

I have read some posts about the crankshaft tail width and such and hope someone can enlighten me. Yes, ill end up getting the bottom end balanced so I can't think of a reason not use a 5.3 crank.

Thanks in advance.

JoeNova

No major differences unless the 5.3 is a Gen 4. If you have both cranks, thats easily solved.

omc8

iTrader: (7)

Well here is what you have to weigh no pun intended. Yes the 5.3 crank will work ,but its balanced for a lighter piston. The LS1 crank is already balanced for its rod/piston. The last time I had a crank balanced it was $175 ..Before you go any further inspect your block and make sure its one you want to build .A 98 block would not be my first choice to build.