The Ford Barn

russcc · 09-30-2013, 08:40 AM

Need help identifying '37-38 crankshafts. If I understand it correctly, those year shafts were lighter for some reason, and sought after by roundy round builders for their lightness. I think I have some, but do not know how to id them. Are they marked 68-6303-A or some other number. Or is it all just a myth ?

38 coupe · 10-02-2013, 09:50 PM

36 LB, 37, and 38 cranks are the same. I doubt they were in high demand. The main bearings are smaller diameter than the 39-53 cranks and therefore don't bolt directly into any 239 cube (3 3/16 bore) blocks.

Ol' Ron · 10-02-2013, 10:08 PM

They have 2.398" mains.

Pete · 10-02-2013, 10:29 PM

Sponsored Links (Register now to hide all advertisements)

As stock, they are no better than any other stock cranks of any year for circle racing other than the later Merc 4 inch crank.

09-30-2013, 08:40 AM	#1
russcc Senior Member Join Date: May 2010 Posts: 2,871	'37-38 crankshaft ID Need help identifying '37-38 crankshafts. If I understand it correctly, those year shafts were lighter for some reason, and sought after by roundy round builders for their lightness. I think I have some, but do not know how to id them. Are they marked 68-6303-A or some other number. Or is it all just a myth ?

10-02-2013, 09:50 PM	#2
38 coupe Senior Member Join Date: May 2010 Location: South Texas Posts: 1,631	Re: '37-38 crankshaft ID 36 LB, 37, and 38 cranks are the same. I doubt they were in high demand. The main bearings are smaller diameter than the 39-53 cranks and therefore don't bolt directly into any 239 cube (3 3/16 bore) blocks.

10-02-2013, 10:08 PM	#3
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,855	Re: '37-38 crankshaft ID They have 2.398" mains.

10-02-2013, 10:29 PM	#4
Pete Senior Member Join Date: May 2010 Location: Wa. Posts: 5,406	Re: '37-38 crankshaft ID Sponsored Links (Register now to hide all advertisements) As stock, they are no better than any other stock cranks of any year for circle racing other than the later Merc 4 inch crank.

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