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Big Block Engine

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This page contains information on Big Blocks.  For casting numbers, scroll down.  To check the number of a specific big block part, click on the page in the menu bar.

 

Big Block Cast Iron Engine

396

1965 - 69

4.094

3.76

2.75

2.20

2 & 4 bolt

402

1970 - 72

4.125

3.76

2.75

2.20

2 & 4 bolt

427

1966 - 69

4.250

3.76

2.75

2.20

2 & 4 bolt

454

1970 - 74

4.250

4.00

2.75

2.20

2 & 4 bolt

502 (crate)

?

4.447

4.00

2.75

2.20

4 bolt

Big Block  Aluminium Engine

427

1969

4.250*

3.76

2.75

2.20

4 bolt

430

1969

4.440*

3.47

2.75

2.20

4 bolt

465

1970 - 71

4.440*

3.76

2.75

2.20

4 bolt

495

1970 - 71

4.440*

4.00

2.75

2.20

4 bolt

495

1972

4.440**

4.00

2.75

2.20

4 bolt

510

1972

4.500**

4.00

2.75

2.20

4 bolt

* Cast Iron Cylinder Liners 

** Without Cylinder Liners 

Big Block Chevy Engine Casting Numbers

Casting # Years
made
Size HP levels
Notes
3946052 69 427 430 4-Bolt main
Aluminum ZL-1
3855961 66 - 67 396 325 & 360 2-Bolt main
3855962 65-66 396 360, 375 & 425 4-Bolt main
3869942 66-67 427 390 & 425 2 & 4-Bolt main
3873858 66 396 375 4-Bolt main
3902406 67 396 325, 350 & 375 2 & 4-Bolt main
3904351 67 427 385-435 2 & 4-Bolt main
3916321 68 427 385-435 2 & 4-Bolt main
3916323 68 396 325, 350 & 375 2 & 4-Bolt main
3935439 68-69 427 335-435 2 & 4-Bolt main
3935440 68 -69 396 265-375 2&4-Bolt main
3955270 69 427 335-435 2 & 4-Bolt main
3955272 69 396/402 265-375 2 & 4-Bolt main
3963512 69-71 427/454 335-450 2&4-Bolt main
3963513 73-76 454 215 2-Bolt main
3969854 69-72 396/402/454 240-360 2&4-Bolt main
3999289 72-78 454 215-270 2-Bolt main
3999290 72 402 240 2-Bolt main
6272177 72 402 210 2&4-Bolt main
14015445 75-87 454 210 & up 2&4-Bolt main
 

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Last Updated:

08/27/99 09:01 PM