crankshaft for 327

[Peter Ansted]

Are crankshafts available for 63 340 hp ?

[John C.]

Re: crankshaft for 327

If you mean can you buy them new, then the answer is no. You should be able to find a used one in your area by checking the newspaper want ads. There's also Hemmings Motor News and the NCRS Driveline. If this doesn't turn up anything, then you can always find one on eBay.

The last one I bought cost me $125 and I had it turned .010" under. Yes, the journals were scored enough to need it. Despite what some people say, a 327 steel crank is still plenty strong for the street duty most Corvettes see even after being turned.

When looking at used cranks, look at the counterweights for a machinist's stamp to see if the crank has been turned already, e.g., "010/010" or "030/030". Stay away from one that's already been turned .030".

[Joe L.]

Re: crankshaft for 327

Peter-----

They are not available new from GM. The 1963 340 hp crankshaft, originally GM PART #3823299 and last available under GM PART #3838495, was discontinued in November, 1987. This crankshaft bore casting #3782680 or 2680.

I'm sure that used examples can be readily found, but they'll likely need to be/have been ground undersize. New, aftermarket crankshafts are also available which exceed the quality of the original GM piece but come with a price-tag to match.