mopar engine casting numbers

[Edward Zeliesko]

can any one decode this block casting number 2408780-1

 

[toolmanmike]

can any one decode this block casting number 2408780-1

That's just a casting number there. Nothing to decode. Hand stamped numbers on machined pads are you need.

 

[Edward Zeliesko]

so the casting do not tell the engine size ?? thanks ed

 

[Edward Zeliesko]

my block says 426tmp, and the front of the block is AAQA ?? THANKS ED

 

[33 IMP]

my block says 426tmp, and the front of the block is AAQA ?? THANKS ED

@Edward Zeliesko Sure its not 2406730? If it is, ive got good news. (If its bare, or shortblock, look for valve notches on the exhaust side of the bore)
2406730 is a 63/64 maxwedge block.

 

[BeepBeepRR]

2406730 – 1963-1965, 426 RB-series big-block , Wedge/Max Performance Wedge

Small-Block Mopar Engine Block Casting Numbers

2264230 – 1960-1967, 318 A-series small-block

2463252 – 273 LA-series small-block

2465330 – 1964-1966, 273 LA-series small-block

2466090 – 318 LA-series small-block

2468230 – 318 A-series small-block

2532630 – 318 A-series small-block

2536030 – 1967-75, 318 LA-series small-block

2536130 – 1965, 273 LA-series small-block

2566080 – 318 LA-series small-block

2780930 – 1968-1973, 340 LA-series small-block, Not T/A or AAR

2806030 – 1966-1969, 273 LA-series small-block

2806030 – 1961-1974, 318 LA-series small-block

2806130 – 1965-1969, 273 LA-series small-block

3418496 – 1971-1974, 360 LA-series small-block

3577130TA – 1970-1971, 340 LA-series small-block, T/A and AAR

3810230 – 1975-1978, 360 LA-series small-block

4104230 – 318 LA -series small-block, Race Engine

4179930 – 1975 – 1993, 360 LA-series small-block



Big-Block Mopar Engine Block Casting Numbers

1944929 – 1958, 350 B-series big-block

1737629 – 1961-1964, 361 B-series big-block

1851629 – 1961, 413 RB-series big-block

1851729 – 1959-1964, 383 B-series big-block

1852029 – 1962, 413 RB-series big-block

1852029 – 1962-1963, 413 RB-series big-block

1852029 – 1962-1965, 426 RB-series big-block

1945429 – 1965, 361 B-series big-block

2120229 – 361 B-series big-block

2120329 – 1959-1960, 383, RB-series big-block

2120429 – 361, B-series big-block

2120529 – 1959-1965, 413, RB-series big-block

2128854 – 1964, 361/383, B-series big-block

2205697 – 1959-1965, 413/426 RB-series big-block

2205712 – 1958-1966, 361B-series big-block

2406730 – 1963-1965, 426 RB-series big-block , Wedge/Max Performance Wedge

2432230 – 1964-1966, 426 RB-series big-block, Wedge/Max Performance Wedge

2440873 – 426 RB-series big-block

2468030 – 413/426 RB-series big-block

2468130 – 1959-1971, 383 B-series big-block

2468330 – 1964-1965, 426 RB-series big-block

2468330 – 1966-1971, 426 RB-series big-block, HEMI

2532130 – 1965, 383 B-series big-block

2532230 – 1964-1966, 426 RB-series big-block, Wedge

2536430 – 1966-1972, 440 RB-series big-block

2568130 – 1959-1971, 383 B-series big-block

2658836 – 426, RB-series big-block, Commercial

2658930 – 1965, 361 B-series big-block

2899830 – 1970, 383 B-series big-block

3614230 – 1971-1972, 400 B-series big-block

3698330 – 1973-1978, 440 RB-series big-block

3698630 – 1973-1978, 400 B-series big-block

3698830 – 1972-1978, 440 RB-series big-block

4006530 – 1976-1978, 400 B-series big-block

4006630 – 1975-1978, 440 RB-series big-block



426 Hemi Engine Block Casting Numbers

2468330 – 1964-1971, 426 Hemi

 

[MadMax3426]

Ed...
2406730-1 is a 1963 426 TMP Max Wedge (low compression 11.1) engine block.

What is the date on the side of the block?
The casting date will tell you when it was manufactured.

What else is stamped on the engine pad - should be a month & date stamped there as well.
The date on the engine pad will tell you approximately when it was put into a car.

I have a 1963 Plymouth Savoy 426-2 TMP HC Max Wedge (high compression 13.5:1). The engine block casting number is 2406730-1 and the pad is stamped 426-2 TMP HC.

I hope that helps clear it up for you.

 

[Edward Zeliesko]

can you tell the cubic inch from the casting, mine reads 2408780-1

 

[33 IMP]

can you tell the cubic inch from the casting, mine reads 2408780-1

We cant find that casting number. We are trying to tell you to look at it again, maybe wash it better. We think you are misreading the three and the six as eights.
2408780-1
2406730-1

 

[toolmanmike]

can you tell the cubic inch from the casting, mine reads 2408780-1

It's probably a #2406730 which is a 63-65 426 wedge/Max Wedge block. I don't see any numbers #2408780 in the book.

 

[33 IMP]

No such animal as a 65 maxwedge block, since no 65 maxwedge. Same casting# could have been used in a 65 426 street wedge.

 

[toolmanmike]

No such animal as a 65 maxwedge block, since no 65 maxwedge. Same casting# could have been used in a 65 426 street wedge.

Just repeating what I read in the book "wedge + Max perf" 63 and 64 Maxie used the same block as the 65 Street wedge is what I read.

 

[Edward Zeliesko]

will look again today, many thanks ed

 

[33 IMP]

will look again today, many thanks ed

The 426 T MP and AAQA are both good indicators of a maxwedge block. Casting date will tell you year. Pic is a late 62 built 1963 426 max. The font is very different from normal blocks.

 

[Edward Zeliesko]

The 426 T MP and AAQA are both good indicators of a maxwedge block. Casting date will tell you year. Pic is a late 62 built 1963 426 max. The font is very different from normal blocks.

View attachment 1146660

 

[Edward Zeliesko]

can you make these numbers out??

 

[toolmanmike]

can you make these numbers out??

426TM-P
9-14-62 (September 14 1962
Yours is a little younger than 63 IMP's but still a 63.

 

[Edward Zeliesko]

here mine, show me yours !! ed

 

[MadMax3426]

Ed...
426 TM-P = Is a 1963 Stage I Max Wedge low compression 11.1 engine block
9-14-62 = This date is when it was assembled to be used in a car.
So yes, it is a early 426 Max Wedge engine block.

I have a 1963 426 TMP engine block and I have a 426-2 TMP HC Max Wedge block. (Which is in my 1963 Plymouth Savoy (June 1963)= a Stage II Max Wedge.)

426 TMP is a early low compression block 11.1 = Stage 1
426-2 TMP HC is a late, after May 1963, high compression block 13.5:1 = Stage II

I hope that this helps you.

 

[MadMax3426]

Sorry Ed, but I have 2 Max Wedge cars already.
1963 Plymouth Savoy 426-2 TMP HC Stage II (restoring)
1964 Plymouth Belvedere 2 dr hardtop 426 VMP HC Stage III (restoring)
and
1964 Dodge 440 2 dr sedan 426 Street Wedge 4 speed-that I am currently almost finished restoring.
So my plates full.
Best to you and in selling your 63.
By the way, nice looking 63 Maxie.