6223 Crankshaft

[L78steve]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: SuperNovaSS</div><div class="ubbcode-body">7115 is forged piston 427. That said, I've pulled apart many standard bore high perf 427s to find 6223 cranks that have likely been in place since new. In reality, if you are balancing the rotating assembly anyway the 7115 crank is just bragging rights/correctness.

Jason </div></div>

You cant balance a 6223 for 427 application without expensive mallory.

[Stefano]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: luzl78</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Stefano</div><div class="ubbcode-body">Back to my original question. The guy on eBay has both types of NOS, one for $599.00 and the other for $1,499.00 or so, I'm not saying that that is the value but what is? </div></div>the only difference is the $1,499 crank is cross drilled and the $599 is not. $900 more for cross drilled. </div></div>

It is my understanding that the vast majority of these later 6223 cranks were not nitrided or cross drilled, while the early ones mostly were.

I have taken apart many original 427 engines over the years and most had the 6223 crank not the 7115.

I have several 427s here at the shop and all have 6223 Cranks.

[8secchevelle]

Not true a 6223 will balance without mallory in a 427 , the only 6223 I have seen that had to have mallory was previously balanced for aluminum rods , I've built 3 in the last year using the nos 6223 on ebay , 2 had to have counterweights cut for piston clearance , not uncommon with factory style pistons

[69L78]

I had one for sale on here in Sept .2014 for $500 and not one response, listed in on ebay and sold for $500.

[68l30]

I had a stack of 6223's a few years back, all were clean and could have easily been turned .010.....couldn't give them away. Some day's you just wonder .. [img]<<GRAEMLIN_URL>>/hmmm.gif[/img]


BIG

[L78steve]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 8secchevelle</div><div class="ubbcode-body">Not true a 6223 will balance without mallory in a 427 , the only 6223 I have seen that had to have mallory was previously balanced for aluminum rods , I've built 3 in the last year using the nos 6223 on ebay , 2 had to have counterweights cut for piston clearance , not uncommon with factory style pistons </div></div>

Good to know. Thanks.

[Zman1969]

what crank is needed for big 7/16&quot; bolt rods? years ago I built a CE 427 with big rods and it needed mallory. theres got to be cranks for the big rods

[earntaz]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: L78steve</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: SuperNovaSS</div><div class="ubbcode-body">7115 is forged piston 427. That said, I've pulled apart many standard bore high perf 427s to find 6223 cranks that have likely been in place since new. In reality, if you are balancing the rotating assembly anyway the 7115 crank is just bragging rights/correctness.

Jason </div></div>

You cant balance a 6223 for 427 application without expensive mallory.</div></div>

The 427 +.030 that I was running with cast pistons had no evidence of mallory -- balanced out OK ... TAZ