Ever see this? Casting date is 5-28-68, vin stamped XS29L9B195682, so slated for 1969, which I'd expect to see "E440" on the pad.
The only one close to this WT, which is water test. Sooooo, ENIGINE TEST??
Stamping is ET41 then a maltese cross.

41 means 413 although I'm not sure what a 413 HP is in 1969. The late model 413 blocks were all used in trucks.

Is it a 413 or a 440? If it is a 440 then the pad is stamped wrong.

It's a 440. Was standard bore at 4.320.

What is the block's casting number?

can you post a picture of the VIN stamping?

IIRC "T" was an indicator for "Truck" before the '70s usage for "TRENTON"

possible, but 7/24 is 3 months+ before the Charger R/T would've been assembled

'69 vs. '79 440s - what's the purpose of the relief along side of the pad? I don't think I've seen that on any '60s 440s
there's also a Maltese Cross hiding in there, was the crank undersize?

The two 4's are a completely diferent style of font. I've got a 69 charger that I sold and it has no stamps on the pad. I thought the top may have been milled off by the builder for the intake to fit, but the back rail has a B on it. I may have a picture on my computer.

It's the right early casting number. It's not a later "Trenton" block where you'd normally see 4t440 or 5t440 on the pad.
As far as that milled "locator" spot next to the pad, it's on early blocks also, but not all. I've got a 1970 S440 warranty block that has it also. I've always assumed it was a locator or register for tooling.
Vin has a funny "9".
As far as the different font in the 4's, I'd sorta expect that, seeing it was cast one place, assembled elsewhere, assigned to a certain car in yet another location..and so on.

That would be the case if the info on the top pad is stamped at different times during the machining and assembly process ??? It has nothing to do with casting and assignment to the vehicle which is done at the auto assembly plant , engines were not built at the auto assembly plants ???

I should have worded it differently. Some numbers were stamped at the engine plant, more that likely others were stamped at the cars assembly plant. Blocks were stored for months some times. Not everything was done the same day, at one place, and there wasn't just one set of "master" stamps.
Question still remains..any ideas on the ET41? It hasn't been milled off and restamped.
I'm not claiming it's rare and valuable...nothing like that. I just haven't seen it before. It came with my 69 GTX, so I'm going to build it.

7/24/68 was a Wednesday - was hoping to blame it on Friday afternoon

start another thread looking for top pad pics of a late '60s 413 industrial or truck engine

The 41 is 413 the A means .020 oversize cylinder bores.
If I remember right the early max wedge blocks were stamped HP
but this wouldn't be max wedge

My 64 413 in my 64 300 was stamped HP. The maxies were stamped MP (maximum performance) with the high compression maxies getting an HC as well, IIRC.

The pic of the casting number is above, painted orange later the same day. It's 2536430, which is 440. Date is 5/29/68.
Not a 413 block, different casting number, smaller bore.

understood, but the top stamp is NOT accurate for a '69 440 for any application