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413 crank ID - Educate me on RB Cranks #67020
06/03/08 08:56 PM
06/03/08 08:56 PM
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Puyallup, WA
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StealthWedge67 Offline OP
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I picked up a what is supposed to be a 413 crank the other day for a song. It has a 6-bolt flange (I've heard industrial 413's had an 8-bolt flange), so I thought it was as good a canidate as any for a 451 build. Looking at it closer, now.... It has these "tangs" jutting off the 3/4, 5/6, & 7/8 rod journal locations. I don't see any #'s on this thing anywhere, how do I I.D. it? And does anyone know what I've got, here?


LemonWedge - Street heavy / Strip ready - 11.07 @ 120
Re: 413 crank ID - Educate me on RB Cranks [Re: StealthWedge67] #67021
06/03/08 10:00 PM
06/03/08 10:00 PM
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Kansas
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racincuda Offline
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413 crank will be forged and probably as you said "good as any for th 451 build"
If it wer mine I would make shure it is dimensionally correct, hav it balanced & run th stuffins out of it

Re: 413 crank ID - Educate me on RB Cranks [Re: racincuda] #67022
06/04/08 08:33 AM
06/04/08 08:33 AM
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Alabama
Mopar-Al Offline
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I remember those tangs on my 64 413 be sure you have the correct main bearings for the crank. The thrust bearing is different on certain years.

Re: 413 crank ID - Educate me on RB Cranks [Re: Mopar-Al] #67023
06/04/08 09:21 AM
06/04/08 09:21 AM
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Leucadia, Ca.
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vdriver Offline
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I've run across a few 413 cranks over the years with the "tangs" you describe. Ran one in my old 440 boat motor back in the day. Machinist told me I could just cut off the tangs; they don't do anything. Probably shaved about 2 ounces off altogether.

Last edited by vdriver; 06/04/08 09:23 AM.
Re: 413 crank ID - Educate me on RB Cranks [Re: vdriver] #67024
06/04/08 10:43 PM
06/04/08 10:43 PM
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Puyallup, WA
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StealthWedge67 Offline OP
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well, thats all good news! I thought maybe I had purchased scrap-metal. The 451 plan coming along slowly but surely, Now have a block, a crank, & a set of 452 castings that I may or may not use....


LemonWedge - Street heavy / Strip ready - 11.07 @ 120
Re: 413 crank ID - Educate me on RB Cranks [Re: StealthWedge67] #67025
06/05/08 02:02 AM
06/05/08 02:02 AM
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Chicago Burbs
sthemi Offline
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Does is look like this one?

4469005-PICT0101.JPG (93 downloads)
Re: 413 crank ID - Educate me on RB Cranks [Re: sthemi] #67026
06/05/08 06:36 PM
06/05/08 06:36 PM
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Puyallup, WA
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StealthWedge67 Offline OP
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No. Its not as rusty

That one does not appear to have the tangs I'm talking about.

I'll try to get a picture of the thing so you guys can see what I'm talking about.

Last edited by GEnsrud; 06/05/08 06:39 PM.
Re: 413 crank ID - Educate me on RB Cranks [Re: StealthWedge67] #67027
06/06/08 11:51 AM
06/06/08 11:51 AM
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dogdays Offline
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Don't bother with the picture, most of us have already seen one or a picture onf one. Just take a disk grinder to the "tangs" and cut them off and blend the area into the crank.

I don't know why they are there, probably a remnant of the forging process that the factory engineers figured could be left on, saving a couple minutes of prep time per crank. Or else someone got the idea that they would sling oil onto the cam or whatever. Whatever the reason they are not necessary and can be removed.
R.

Re: 413 crank ID - Educate me on RB Cranks [Re: dogdays] #67028
06/06/08 11:58 AM
06/06/08 11:58 AM
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USA
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max Offline
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here's a crank from a 1962 413 with the 6 bolt rear flange and the tangs.

4471608-Feb15#06.JPG (72 downloads)
Re: 413 crank ID - Educate me on RB Cranks [Re: max] #67029
06/06/08 05:39 PM
06/06/08 05:39 PM
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Puyallup, WA
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StealthWedge67 Offline OP
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Yep! Thats them. okay, I'll pass on grinding them myself. I'll just have the machinist take care of them when he cuts the mains & the counterweights down (451 prep).


LemonWedge - Street heavy / Strip ready - 11.07 @ 120






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