Chevy 6-Cylinder Engine Casting Numbers

A large list of known Chevy and GMC six-cylinder engine casting numbers.

This is a list of known block casting numbers for Chevy and GMC six-cylinder engines.

You may also want to try our Engine Casting Lookup Tool.

Casting # Make Displacement Year
1970 Chevrolet 292 64 – 67
2135412 GMC 248, 270 46 – 54
2192402 GMC (Military) 302
2193980 GMC 302 52 – 54
2324002 GMC 248 55
2324003 GMC 270 55 – 63
2324004 GMC 302 55 – 62
2404929 GMC 270 55 – 63
289890 Chevrolet 292 63 – 77
328518 Chevrolet 292 73 – 77
328572 Chevrolet 250 73 – 76
328575 Chevrolet / Buick / Oldsmobile / Pontiac 250 68 – 84
328576 Chevrolet / Buick / Pontiac 250 68 – 76
328578 Chevrolet 292 73 – 84
328880 Chevrolet 292 63 – 77
329990 Chevrolet 292 63 – 77
352194 Chevrolet 292 73 – 84
358825 Chevrolet 250 66 – 76
3629703 Chevrolet 235 50 – 52
364909 Chevrolet / Oldsmobile 292 75 – 79
3660439 Chevrolet 235 41
366855 Chevrolet / Buick / Oldsmobile / Pontiac 250 66 – 84
3692703 Chevrolet 235 50 – 52
3692708 Chevrolet 235 50 – 52
3692713 Chevrolet 235 50 – 52
3693374 Chevrolet 235 42 – 49
37001481 Chevrolet 235 53 – 55
3701946 Chevrolet 235 53
3703414 Chevrolet 261 54 – 56
37127 Chevrolet 250 73 – 76
3733340 Chevrolet 261 55 – 57
3733813 Chevrolet 261 58
3733946 Chevrolet 235 54 – 55
3733949 Chevrolet 235 53 – 55
3733950 Chevrolet 261 54 – 55
3737012 Chevrolet 261 55 – 57
3738307 Chevrolet 235 58 – 62
3738365 Chevrolet 261 60 – 62
3738476 Chevrolet 235 58 – 62
3738813 Chevrolet 261 55 – 63
3739365 Chevrolet 261 58 – 62
3739716 Chevrolet 235 58 – 62
3759365 Chevrolet 261 59
3764476 Chevrolet 235 58 – 62
3769716 Chevrolet 235 58 – 62
3769717 Chevrolet 261 59 – 62
3769925 Chevrolet 261 58 – 62
377127 Chevrolet / Oldsmobile / Pontiac 250 73 – 79
377129 Chevrolet 292 73 – 84
3773949 Chevrolet 235 54
3777178 Buick 250 68 – 76
3782856 Chevrolet 194 62 – 67
3782858 Chevrolet 194 62 – 67
378307 Chevrolet 235 60 – 62
3783949 Chevrolet 235 53 – 54
3788378 Chevrolet 292 62 – 74
3788406 Chevrolet 230 62 – 69
3788514 Chevrolet 153 62 – 70
3788813 Chevrolet 261 55 – 59
3789404 Chevrolet 292 63 – 76
3789412 Chevrolet 292 63 – 66
3789716 Chevrolet 292 63 – 72
3792852 GMC 194 62 – 66
3792858 Chevrolet 194 62 – 67
3821970 GMC 292 67 – 72
3833057 Chevrolet 194 62 – 70
3833067 Chevrolet 194 63 – 70
3833340 Chevrolet 261 55 – 57
383340 Chevrolet 261 55 – 57
3835253 Chevrolet 216 42 – 53
3835309 Chevrolet 235 42 – 49
3835335 Chevrolet 235 42 – 49
3835353 Chevrolet 216 48 – 52
3835363 Chevrolet 235 54
3835374 Chevrolet 235 42 – 49
3835491 Chevrolet 235 54
3835497 Chevrolet 216 42 – 53
3835527 Chevrolet 216 51
3835692 Chevrolet 235 50 – 52
3835794 Chevrolet 216 42 – 53
3835846 Chevrolet 235 53
3835849 Chevrolet 216 42 – 53
3835894 Chevrolet 216 53
3835911 Chevrolet 235 53 – 55
3835917 Chevrolet 235 54 – 55
3835946 Chevrolet 235 53
3835949 Chevrolet 235 54
3836012 Chevrolet 261 55 – 57
3836223 Chevrolet 235 55 – 57
3836233 Chevrolet 235 55 – 57
3836340 Chevrolet 261 55 – 57
3836386 Chevrolet 235 55 – 57
3837004 Chevrolet 235 55 – 57
3837012 Chevrolet 261 55 – 57
3843363 Chevrolet 235 53 – 55
3850817 Chevrolet 230, 250 62 – 78
3851656 Chevrolet 292 63 – 72
3851659 Chevrolet 292 63 – 76
3851859 Chevrolet 292 63 – 72
3854036 Chevrolet / Oldsmobile / Pontiac 230, 250 62 – 76
3855914 Chevrolet 292 63 – 66
3855987 Chevrolet 292 63 – 71
3855991 Chevrolet 230 63 – 70
3856233 Chevrolet 235 55
3858190 Chevrolet 235 54 – 55
386855 Chevrolet 250 74 – 77
3877178 Chevrolet / Buick / Oldsmobile / Pontiac / GMC 230, 250 62 – 78
3879875 Chevrolet 194 62 – 70
3886061 Chevrolet 292 63 – 66
3890011 Chevrolet / Buick / Oldsmobile / Pontiac 250 68 – 72
3890013 Chevrolet 250 68 – 72
3892858 Chevrolet 194 64 – 67
389770 Chevrolet 216 42 – 51
3897702 Chevrolet 216 42 – 53
3921770 Chevrolet 292 66 – 76
3921967 Chevrolet 230 64 – 69
3921968 Chevrolet / Oldsmobile 230, 250 64 – 76
3921970 Chevrolet 292 63 – 76
4001133 Chevrolet 292 76 – 80
6107326 GMC 228 39 – 52
6107328 GMC 248 53 – 54
828575 Chevrolet 250 72 – 77
8335794 Chevrolet 216 42 – 53
837751 Chevrolet 235 42 – 49
838101 Chevrolet 216 37
838710 Chevrolet 216 37 – 38
838941 Chevrolet 216 39
839132 Chevrolet 216 40
839400 Chevrolet 216 41
839751 Chevrolet 235 42 – 46
839770 Chevrolet 216 42 – 51
8397715 Chevrolet 235 42 – 49
839910 Chevrolet 216 42 – 51
839931 Chevrolet 235 42 – 49
8994256 Chevrolet 292 64 – 77
93403466 Chevrolet 250 75 – 83
93403467 Chevrolet 292 75 – 84
93406004 Chevrolet 292 75 – 84
9787437 Pontiac 230 66 – 67
9790043 Pontiac 250 68 – 69
9795066 Pontiac 250 68 – 69
9890043 Pontiac 50 68 – 69

Comments (21)

  1. Bob McAuley

    4 years ago

    I have a 1950 gmc truck and the numbers to id the motor is c324538 can you help me in telling the size of the engine please

  2. scrapiron64

    3 years ago

    I have a chevy I6 with casting number 348675. Can someone tell me what size engine this is? It came out of a 65 GMC truck but was told It replaced a 305V6, so its a mistery? It has a head that has the intake molded in. thanks, scrapiron

  3. scott k

    3 years ago

    i have a inline 6 that was in a 63 chevy II the casting numbers on the block are F05230K can anyone help me with what it is

  4. Ron Perdew

    3 years ago

    If my choice of engine size is either a 230 or 250, how do I know which it is? There is a further number GM 53 after the number.

  5. Russell brown

    3 years ago

    I’m trying to. ( ID ) this GM block ID number I can’t seam to find it3836848. GM 10

  6. ROCKY AUSTIN

    3 years ago

    I have a gm inline 6 block nu F08081BA can you help me?thanks

  7. norm myers

    3 years ago

    my engine number (stamped on the block near the distributor) is not on your list (4jcmi86038)
    The truck ser number (vin) is 9jr c 2535, I believe the truck is a 3/4 ton. Can you help me identify engine size based on the above?

  8. noel holcomb jr

    3 years ago

    I have an 80’s chevy frame that has an inline six engine in it that I acquired about a year ago. I am having trouble finding out any info on it the only numbers that I can find on it that I think are casting numbers are 473483…I seen on a forum for chevy trucks that those numbers are a 75-79 250 inline but want to make sure, if you can shed any light on this It would be greatly appriciated

  9. mackattack123

    3 years ago

    Have a block number 8738807. What year is it?

  10. Chris Wooty

    3 years ago

    I have a 1957 Chevy Grumman Olson Kurd Side Van. It has an inline six. Eight lug wheels and appears to be a 3/4 ton. Can anyone help with any kind of info on this type truck. Engine size? Engine/transmission replacement, pros-cons? rear end gear? just any and all help. Thank you in advance.

  11. Harold Bagwell

    3 years ago

    having trouble finding model for G.M. inline 6 cylinder casting number on block 473483 any help
    thanks

  12. ERNIE GUZMAN

    3 years ago

    ME TOO! LIKE HAROLD BAGWELL, I HAVE THE SAME INLINE 6 WITH
    CASTING NUMBER 473483. I NEED TO KNOW 250?, OR 230?, WHAT YEAR?
    PLEASE HELP I NEED PARTS. THANKS

  13. Ed

    2 years ago

    This was very helpful for me on a 63′ chevy ll new to me to verifing the 194 ci thanks

  14. Henrik Pedersen

    12 months ago

    Hello! I have an old chevy trusk with a not original engine installed. The sign on the block says:
    Yellow Truck & coach MTG
    Pontiac-Michigan
    Serialno: 23605810
    Bore 3-5/8
    Stroke: 3-13/16
    Cyl: 6

    Can you please help me find out what cind if engine this is?
    Thank you!
    Henrik Pedersen
    Norway

  15. Gary Beck

    12 months ago

    I need to ID an in line 6 cyl engine in a 1936 Chev 1 1/2 ton truck with engine casting number 836010 – 3.

  16. Trinidy Richardson

    11 months ago

    I have an inline straight six motor that I am told is a rare one. The numbers I got off it are GM 3835201. And not too far away from those numbers there is A78 which is also stamped on it. Can anyone tell me what kind of motor I have?? It’s got a big fly wheel on it also which I believe is rare. I’m stumped, please help.

  17. colin cooper

    11 months ago

    Hi im struggling with trying to identify a motor in my 1952 gmc 3/4ton pick up
    I bought the truck yrs ago and want to fix it up but i dont know if its the original motor.
    The # by the distributer is
    B 228379863
    Straight 6 motor
    Has a single zenith carberater
    Oil bath intake
    No oil filter
    6volt system with push start
    If anyone could give me a tip id be verry thankful

    Plz n thanks

  18. Donnie Richardson

    10 months ago

    Trying to find out information on an engine for an older friend. The number he gave me is 377816. Any information would be greatly appreciated. Thanks

Comments are closed.