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Max Wedge Block? #2579988
11/18/18 10:04 PM
11/18/18 10:04 PM
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Tucson AZ,
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MadMopars Offline OP
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I just picked up this motor today and am not real familiar with the early stuff. Based on the casting number 1852029-2 and the attached image of the pad stampings can anyone tell me more about this motor? Thanks, Trent

IMG_20181118_170221.jpg
Re: Max Wedge Block? [Re: MadMopars] #2579989
11/18/18 10:07 PM
11/18/18 10:07 PM
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70HemiGTX Offline
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It should have the casting "AAQA" on the driver's side front. "Google" Max Wedge block pictures.

Re: Max Wedge Block? [Re: 70HemiGTX] #2579990
11/18/18 10:13 PM
11/18/18 10:13 PM
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Wichita
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GY3 Offline
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Valve reliefs in the top of the bores as well...

20181118_181842.jpg
Re: Max Wedge Block? [Re: GY3] #2579995
11/18/18 10:22 PM
11/18/18 10:22 PM
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Rancho Cordova, California (Sa...
hemi71x Offline
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It's NOT a Max Wedge block.
Wrong "Font" engine stampings, on the id pad.
Just a standard 413 hp engine block, nothing special about it.


Max Wedge Engine ID 413.jpg
Last edited by hemi71x; 11/18/18 10:26 PM.
Re: Max Wedge Block? [Re: MadMopars] #2580000
11/18/18 10:32 PM
11/18/18 10:32 PM
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41 - 413
S - 1962

That's the correct casting number though it's not unique to the MW engine and my info says the block was only notched on the exhaust side.

As for the HP stamp (low compression version), it's either got that or the HPHC (high compression version) stamp as well. With the fonts being different, looks like it could be one.


They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
Re: Max Wedge Block? [Re: 70HemiGTX] #2580002
11/18/18 10:41 PM
11/18/18 10:41 PM
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Tucson AZ,
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Originally Posted By 70HemiGTX
It should have the casting "AAQA" on the driver's side front. "Google" Max Wedge block pictures.


It does. I have not pulled the heads yet though. Thoughts?

IMG_20181118_173259.jpg
Re: Max Wedge Block? [Re: MadMopars] #2580004
11/18/18 10:42 PM
11/18/18 10:42 PM
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N.W. Florida
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Fat_Mike Offline
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Not sure what your plans are, but don't give up on it until you read the short thread in the truck section titled "413 motorhome engine rebuild."

Re: Max Wedge Block? [Re: MadMopars] #2580006
11/18/18 10:47 PM
11/18/18 10:47 PM
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NY
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70440+6bbl Offline
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Real '62 MW. The OP's block is not one.

1962 max wedge.jpg
Re: Max Wedge Block? [Re: 70440+6bbl] #2580009
11/18/18 10:51 PM
11/18/18 10:51 PM
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Another...

1962MW413block.jpg
Re: Max Wedge Block? [Re: Fat_Mike] #2580010
11/18/18 10:51 PM
11/18/18 10:51 PM
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Rancho Cordova, California (Sa...
hemi71x Offline
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FYI
AAQA is not unique to a Max Wedge engine.
Doesn't help much, one way or another in identifying a standard block or Max wedge.

Re: Max Wedge Block? [Re: 70440+6bbl] #2580012
11/18/18 10:54 PM
11/18/18 10:54 PM
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Originally Posted By 70440+6bbl
Real '62 MW. The OP's block is not one.


Agree.
NOT Max Wedge.

Re: Max Wedge Block? [Re: Supercuda] #2580051
11/19/18 12:32 AM
11/19/18 12:32 AM
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Wichita
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Originally Posted By Supercuda
41 - 413
S - 1962

That's the correct casting number though it's not unique to the MW engine and my info says the block was only notched on the exhaust side.

As for the HP stamp (low compression version), it's either got that or the HPHC (high compression version) stamp as well. With the fonts being different, looks like it could be one.


Yes, notches only on exhaust side of the bores.

Re: Max Wedge Block? [Re: GY3] #2580086
11/19/18 03:05 AM
11/19/18 03:05 AM
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Posts: 42,532
Spokane Washington
ScottSmith_Harms Online content
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The block castings for Max Wedges were also used in other 413 applications, that stamping is typical of a HP street application such as a police car might have. I agree, not a Max Wedge. Bore notches can be added to any block so its a clue not a "clincher".

Re: Max Wedge Block? [Re: ScottSmith_Harms] #2580484
11/20/18 03:03 AM
11/20/18 03:03 AM
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Tucson AZ,
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MadMopars Offline OP
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Thanks for the input guys. As I mentioned, I'm not real familiar with the early stuff and actually bought the motor for a parts donor so no worries about Max Wedge origin either way. I did pull the heads tonight and after looking it over a bit closer it looks like someone rebuilt it years ago and never actually ran it. I'm hopeful I can tear it apart and measure everything and if all goes well, throw it back together and beat on it for awhile although that wasn't my plan when I bought it. I'll probably start soaking things to get it freed up for disassembly this weekend and I'll report back with my findings when I do. Thanks again guys! -Trent

IMG_20181119_213700.jpgIMG_20181119_213718.jpgIMG_20181119_220553.jpg
Re: Max Wedge Block? [Re: MadMopars] #2580530
11/20/18 08:23 AM
11/20/18 08:23 AM
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Michigan
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Transman Offline
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Looks like you scored a nice set of rockers and pushrods in the deal too.

When you work on the engine check the passenger side rocker shaft - rear - in your picture it looks like the soft plug might be missing. There is a black spot that looks like the bolt hole is visible.

Should be one in each end of each shaft. Could also be that the builder hammered them in past the bolt hole too.

Last edited by Transman; 11/20/18 08:25 AM.
Re: Max Wedge Block? [Re: MadMopars] #2580668
11/20/18 04:04 PM
11/20/18 04:04 PM
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Bend,OR USA
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Cab_Burge Offline
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What diameter are the exhaust valves? What about head casting numbers?
All the Chrysler 300 motors before 1962 had solid lifters and those type adjustable rocker arms. All the letter series 300 motors had them until 1964 also scope I think the 1964 300 letter cars used the six bolt valve covers and the later style rocker arm pedestals cast into the heads also scope
You may have gotten very lucky up


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Max Wedge Block? [Re: Cab_Burge] #2580713
11/20/18 05:56 PM
11/20/18 05:56 PM
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northwest USA
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NANKET Offline
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Originally Posted By Cab_Burge
All the Chrysler 300 motors before 1962 had solid lifters and those type adjustable rocker arms.


No they did not. 1960 and 1961 standard 375 horsepower engines had stamped rocker arms and hydraulic lifters. The optional engines had solids.

Re: Max Wedge Block? [Re: MadMopars] #2580776
11/20/18 09:13 PM
11/20/18 09:13 PM
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Oregon, U.S.A
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elmor353 Offline
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It doesn't look like it was run after the last rebuild. Top of the pistons are clean and it looks like new exhaust valves. Score!

Re: Max Wedge Block? [Re: NANKET] #2580830
11/20/18 10:57 PM
11/20/18 10:57 PM
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Bend,OR USA
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Originally Posted By NANKET
Originally Posted By Cab_Burge
All the Chrysler 300 motors before 1962 had solid lifters and those type adjustable rocker arms.


No they did not. 1960 and 1961 standard 375 horsepower engines had stamped rocker arms and hydraulic lifters. The optional engines had solids.
I've never seen or heard of any Chrysler 300 Letter cars made before 1962 that didn't come standard with 2x4 barrels carbs and solid lifters, 375 HP or not work
Mopar decided to add the non letter 300 cars in 1962 including 4 door hardtops with 383 motors whiney

Last edited by Cab_Burge; 11/20/18 10:58 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Max Wedge Block? [Re: MadMopars] #2580963
11/21/18 04:37 AM
11/21/18 04:37 AM
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northwest USA
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You never heard of it? OK so that makes it so? "Every human is wrong sometimes" just caught up with cab.

Well look it up, ok I did that for you, read this. Or just read the factory service manual. 375 horse had hydraulic lifters, optional engine shad solid lifters. It's true, and it's OK.

https://www.allpar.com/cars/chrysler/300C/300F.html

image.jpgimage.jpgimage.jpg
Last edited by NANKET; 11/21/18 04:55 AM.
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