Forged crank confirmation for the experts?

[BruceH]

I bought a Mach 1 short block. The crank has 8 bolts and center counterweights. Everything I can find on it suggests it is a forged crank. I am aware of one 8 bolt cast crank that Ford made at one time so I'm hoping that someone can confirm for me.

These pictures show the numbers on the crank. From what I read the numbers don't mean a whole lot.

Thanks,
Bruce

 

[lethe]

Is there any sign of casting marks? It doesn't look like there are any.

 

[BruceH]

Is there any sign of casting marks? It doesn't look like there are any.

The last pic shows wide casting or forging marks. One of the things I read was that narrow marks are on the cast cranks and wider marks of about .75" are on the forged cranks.

 

[lethe]

I saw those in the last picture but it didn't jump out at me as marks leftover from casting. Like you said, casting marks are usually pretty narrow.

 

[W3bb3r04]

From what Im aware of, the Manual Mach 1's came with Forged cranks the automatics did not. I think in that era all 8 bolt cranks in mustangs were forged and 6 bolts were not.

 

[RazorbackMustang]

The only cast 8 bolt 4.6 Muatang cranks were 99-00 Windsor 2-valves.

 

[BruceH]

From what Im aware of, the Manual Mach 1's came with Forged cranks the automatics did not. I think in that era all 8 bolt cranks in mustangs were forged and 6 bolts were not.

That's pretty much what the seller told me. I just wanted to verify prior to having it ground.

 

[05moneypit]

Looks like it's a forged unit. The wide displaced metal at the crank pins is from it being forged, cast will have a narrower line. Also as you stated the center counterr weights are forged indication on the 4.6 crank.

I believe that part number is a Kellogg Crankshaft number. Ford bought their forged cranks from Kellogg from what I understand.

 

[tjm73]

The stick MACH 1's did have forged cranks. Auto's were cast. I remember reading this several times when they came out.

Also, I've read that all forged cranks had the center counter weight and none of the cast cranks had it.

 

[ArtQ]

Mach 1 shows 3Z-6303-BA Man or auto

Cobra shows 3Z-6303-AA


http://www.fordpartsgiant.com/Page_...ttributes=38030,40901,30867,36663,22099,28761

 

[Grabber Blue 5.0]

From what Im aware of, the Manual Mach 1's came with Forged cranks the automatics did not.

This is 100% correct.

 

[JeremyH]

Looks like a forged one to me. Looks just like the 01 cobra crank I had.

 

[WARstang]

As said before that is a forged crank. The forging line is about .500 wide. Cast cranks will have a casting line that is about .125 wide

 

[BruceH]

Thanks for the confirmation guys.

 

[JoshK]

Now what are the plans for it?

 

[tjm73]

Mach 1 shows 3Z-6303-BA Man or auto

Cobra shows 3Z-6303-AA


http://www.fordpartsgiant.com/Page_...ttributes=38030,40901,30867,36663,22099,28761

Mach 1 automatics are cast crank.

 

[retfr8flyr]

Bruce, the center counter weight is the key. To my knowledge, Ford never made a cast crank with a center counter weight. Sounds like you got a good deal, now what are you going to do with it??


Earl

 

[GB10]

I know you already have your answer, but I figured I would just confirm that you do have a forged crank. Manual mach 1 mustangs used the same crank as cobras.

 

[go302]

The forged cranks also have a sort of purplish iridescent hue on the counter weights

 

[go302]

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