1963 426 stgII max wedge

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one bad 440

one bad 440

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Selling my 1963 426 stgII max wedge engine. This is the real deal, a true survivor that has been on the shelf for over 20 years. In the fall I decided to install it in my 69 and give it a little run time. It runs great, does smoke a little but runs great. I can video it running if someone desires. This comes complete air cleaners to oil pan. Original exhaust manifolds are available too but not included. More pics can be taken for those interested. Please reply or PM with any questions. $15,000 + shipping from ME / 04976

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805moparkid said:
hard to tell from the angle but it almost looks like a stage three intake...
Click to expand...

Unless you can see under the carbs I dont see how you could tell them apart, they look identical as far as I could ever tell.
Difference is stgI and II are 1 9/16th primary with 1 11/16th secondary that goes with the 3447S carbs
StgIII is 1 11/16 primary 1 11/16th secondary with the 3705S carbs.

This is stg II with the 3447S carbs.
 
It is a Stage 1 intake. Stage 2 has the larger primaries for the 3705 carbs and the stage 3 has a different slope to the plenum. 413 MW are not stage one engines.
 
I thought that 63 was the first year of the 426 MW, therefore all stage I's were 413...
 
one bad 440 said:
Unless you can see under the carbs I dont see how you could tell them apart, they look identical as far as I could ever tell.
Difference is stgI and II are 1 9/16th primary with 1 11/16th secondary that goes with the 3447S carbs
StgIII is 1 11/16 primary 1 11/16th secondary with the 3705S carbs.

This is stg II with the 3447S carbs.
Click to expand...

the intakes are different... the slope of the ports is different from intake to intake...

Rubyredsavoy said:
It is a Stage 1 intake. Stage 2 has the larger primaries for the 3705 carbs and the stage 3 has a different slope to the plenum. 413 MW are not stage one engines.
Click to expand...

i thought the intake on two and three were different...

but 413's were stage 1's...

krazykuda said:
I thought that 63 was the first year of the 426 MW, therefore all stage I's were 413...
Click to expand...

exactly
 
1962 is the first year of the max wedge and was 413 with the cross ram and used the 3447S carbs just like the 63 MW engine. In 64 came the stgIII but they never actually designated the 62 MW as being a stgI. It was not announced until May 25th of 62 that they were released to the public and was called the race package. Chrysler called it the race package due to what I always figured that they never actually thought of going beyond the first stage of MW engines. Then in 63 they designated them as stgII and stgIII for 64. Yes there is supposed to be a slope difference in the intake but I always felt it to be more of an internal difference then external, I have compared them side to side and never saw anything outstandingly different to be able to look at them and say that is a stgII and that is a stgIII. And this is why the carb bore holes in the intake are the best way to know what intake you are looking at , as well as the production date.
Here is a pic of the intake date casting number.

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Block casting date,
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Block pad stamp,
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Let me define the stamping, the first number is the year the second the day and the third the month. 3=63, 16=16th day,08=8th month august.

Carb stamp,
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Correct, the '62 was just the Super Stock and Ramcharger race package. The early 426 MW was just that, no stage reference yet until June when the Stage 2 pkg was announced, therefore, most folks call the pre-June, '63 MW cars as being Stage 1 equipped. The '63 Stage 3 intake is visually different when compared side by side from any of the earlier castings. The 413 MW through May '63 426 Stage 1 and 2 intakes are 100% the same part, except for the larger primary bores.
 
Weird, I tried to post a couple of links and this site won't allow it?
 
That 3447 SA is a service replacement, otherwise, what a super nice 11.1 maxie engine! Having the original oilpan is very rare!
 
krazykuda said:
I thought that 63 was the first year of the 426 MW, therefore all stage I's were 413...
Click to expand...


Didn't work like that, but many people think that makes sense, because it sounds good.

The Stage 2 engine was not released until June '63, so where does that leave all of the earlier built '63 MW cars (August '62-May '63)?

The stage 2 426 had some very minor improvements over the early 426 "stage 1". The June 18th, 1963 in-house memo says the camshaft, carbs and heads were changed/re-worked to improve performance and that the new engine will be designated as a Stage 2.

The engine for sale here is a "Stage 1" 426 T-MP. If it were a 426 Stage 2, the id pad would read

426 T-MP-2

The first 426 TMP-2 engine was built on 5-31-63

I hope this helps:thumrigh:
 
Here is a assembly line correct 3447S carb
 

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BTW- the id pad on your engine reads:

426 = displacement
T = 1963
MP = Maximum Performance
3= March
16= 16th day
08= the 8th engine assembled that day

Only the 426 MW engines in '63 and '64 were numbered that way. Cool in that it makes every max wedge a one of a kind, as no two engines can be stamped the same.

A high compression engine would read 426 TMP-HC like this one
 

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A 413 MW block pad is stamped like this one that I owned
 

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And here is a 1964 11-1 low comp MW 426 blockpad

in this case:
426 = displacement
V= 1964
MP= max perf
12-December
10= 10th day
08 =8th engine assembled that day
 

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And here is a very early '63 426 MW block that I own. The first 426 MW was built on 8-26-62, this one is 9-1-62.

The day/month/engine built style stamping started in December, '62.
 

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Here is a real 1964 Stage 3 intake, notice the slope circled here, compared to all 413-426 intakes prior to it with the sharper transition?

Photo borrowed from the MW.com website
 

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That's good info. Thanks.

i have a set of stage III heads and intake that I need to check with this info.
 
Onebad440, good luck with the sale. Whoever gets it not only gets a piece of history, but a wagon load of debate as well. Good info, though.
 
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