Mopar 413/426 Max Wedge block casting number confusion

Brooks James said
Where are the webs ??
See the earlier pics, AAQA, its there
It's a mystery, the casting block number shows 2 different applications, 59-65 passenger 413/426, and Max Wedge 62 413, depending on where I sourced the info. The casting date is 7/63. I thought 413 max wedge was 62 only. The pad indicates a 413, build date 9/63. It has a 426 bore 4.25. I'll do further research , but it appears the 516 heads are correct for a std 426 63-64 it's "appearance is a that it's a virgin. Valve notches, it appears the max engines had either 208/188 valves or 214/181. With 181 exhaust , block notching not necessary. So..im think that the 208/188 produced more hp so they were adopted for 63-64, and the 62 had the 181,'s, no notching necessary. Once it gets completely torn down , more light will be shed
No phone or email available for Greg Lane , a max wedge guru. Trying other sources. I did read some on his web site info there that the AAQA mark indicated a max block ?

AAQA cast all the max wedge blocks, yes. However, they also cast the heavy duty truck blocks. Which is why just having the AAQA by itself without the 730 series casting number means little.

All max wedges, 413/426s were notched. Regardless of valve size.

63 would have been the 426 Max Wedge as the 413 had been retired from max wedge form. However, 413 production continued on for several years in standard form.

The webbings would be on the mains.

516 heads were the only standard big block head during that era. They were used on everything from the 361 to the 426.

As for the casting number, again, only one casting number was ever used for the 413 Max Wedge as verified by the Chrysler Museum. Yours, sadly, is not that. Not is it correct for a 1963 426 max wedge.

That said, the fact it’s in a motor home probably makes it a rather low mileage engine.

When you get it a part, take pics of the rods, crank and piston casting numbers. Those will put the mystery to rest one way or the other