No casting numbers??

tire_fryin89 · Apr 16, 2019

Ok guys, I’m jumping into the mopar scene after building and owning 9 mustangs, I just bought a 413/440 that came out of a 72 motorhome to drop in a 64 Savoy. When I went to look for the casting numbers on the left side of the block all that’s there is the date which appears to be 7-18-72. But that’s it. There’s no casting numbers anywhere. Am I missing something or is there another place to look? Sorry for the poor photo quality but shouldn’t there be some numbers by the date or on the left side of the block?

dryheat · Apr 16, 2019

Look at the flat pad just in front of the intake and let us know what numbers / letters you see there.

Picture of pad here https://www.google.com/url?sa=i&sou...aw3KfVi25y-GWU9yd8lLSCeZ&ust=1555509427604371 ...

beanhead · Apr 16, 2019

Also check the rear of the block on top of the bellhousing

Daves69 · Apr 16, 2019

May shed some light...…….
https://www.bigblockdart.com/forum/archive/index.php/t-3978.html

66Satellite47 · Apr 16, 2019

Not sure what you have there. On passenger blocks the casting date is on the passenger side & the block casting number on the driver side. Seems to me the '72 casting is a 440. Far as I know motor homes had gone to the 440 by then.

Demonic · Apr 16, 2019

Petcock in the water jacket = industrial 413? I'm guessing here.

tire_fryin89 · Apr 16, 2019

Ok found the numbers, they’re on the back by the bell housing. Found them after reading those links Daves69 sent. 2658836. According to that link it’s a heavy 413. A under bored 440? Question is I’m assuming I can still run car 440 heads and cam etc. correct? Or 383 heads? Just like any other RB motor?

beanhead · Apr 16, 2019

That casting number of refers the '426 industrial' block. For whatever reason, it seems the factory often used that block bored to 4.320 for RV and truck applications. It's just a 'raised block', like any regular 440, all 440-based parts will fit.. I've seen many of these in RVs in the junkyards, with all the emission tags and such saying '440' and with that casting number (I'm using one myself!) and they had '440' stamped on the front ID pad, and measured out to 4.320... long story short it's a 440, use it and abuse it like any other.. Just get the compression up some as it will have the pistons way down there... unless you are trying to keep compression down low.

tire_fryin89 · Apr 16, 2019

Ahhh ok. Man I feel like Chrysler was the shade tree mechanics of Detroit. So many weird things from back in the day lol. And I had toyed with the idea of a single turbo or pro charger setup so the lower compression may be on my side. I’ve also heard a lot about the “whiplash cams” weather they’re good or not but suppose to raise cylinder pressure? Might even try one of those. Either way thanks guys y’all have been an awesome help!

Demonic · Apr 16, 2019

tire_fryin89 said:
I feel like Chrysler was the shade tree mechanics of Detroit.

Actually, just the opposite. Walter P Chrysler himself was a machinist. Later the Chrysler Corp became known for it's engineering. While GM and Ford would sell you a muscle car with the same lousy 9" drum brakes the six cylinder cars had, R/T's had 11" drums with their 440's.

tire_fryin89 · Apr 16, 2019

I love the high quality of these mopars, way better than the other big two, but the aftermarket is just so lacking for this ‘64. I’m so surprised at how hard it is to find some common parts for this car lol. But I love the 64 Plymouth/dodge super stocks from back in the day and I’m not giving up! Wish me luck!

No casting numbers??

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