Chevy V8 Engine Block Casting NR info
Chevy Block Casting Number Reference
Small Blocks & Bid Blocks
Small blocks
Number Engine M-Blts Year Description
140029 350 2 80-84
330817 400 2 72-80 3 frz. plugs
355909 305 2 75 Nova, Monza
360851 262 2 75-76 Monza
361979 305 2 78-79
366245 350 2 78-79 Dipstick in oil pan
366287 4 Bowtie, Alm, siamesed
366299 4 Bowtie, Alm., 4.00 bores
376450 350 4 78
389257 302 2 67
393288 283 2 65-67
460703 350 4 78
460776 305 2 78-79
460777 305 2 78-79
460778 305 2 78-79
471511 267 2 79-82
3556519 283 2 58-61
3703524 265 2 55 No oil filter
3720991 265 2 56-57
3731548 283 2 57 No side motor mounts
3737739 283 2 58-64
3756519 283 2 58-62
3782870 327 2 62-67
3789817 327 2 62-67
3789935 283 2 61-64
3790721 283 2 62-64
3791262 327 2 62-67
3792563 327 2 65
3792582 283 2 64-65
3794226 283 2 58-63
3794460 327 2 68-69 Large Journal Mains
3814660 327 2 68-69
3830944 327 2 63 300 HP
3834810 283 2 64-66
3834812 283 2 62-63
3837739 283 2 58-62
3849852 283 2 64-68
3849935 283 2 65-67
3852174 327 2 62-64
3858174 327 2 64-66
3858180 327 2 64-67
3858618 350 2 68-76
3862194 283 2 65-67
3864812 283 2 62-64
3892657 302 2 67 Z-28 Camaro
3892657 327 2 67
3896944 283 2 67
3903352 327 2 67
3914636 307 2 68
3914653 307 2 67-73
3914660 327 2 68
3914678 302 2 68 Z-28 Camaro
3914678 327 2 68
3914678 350 2 68
3932371 307 2 69-73
3932373 307 2 68-73
3932386 302 4 69 Z-28 Camaro
3932386 350 4 69
3932388 350 4 69
3951509 400 4 70-71
3951509 400 2 74-75 2 frz. plugs
3951511 400 4 70-71
3956618 302 4 69 Z-28 Camaro
3956618 327 2 68-69
3956618 350 2 or 4 69
3956632 307 2 69
3959512 327 2 62-63
3970010 302 4 69 Z-28 Camaro
3970010 350 2 or 4 69-80
3970014 350 2 or 4 72
3970020 307 2 70-73
3970041 327 2 65-67
4715511 305 2 80
6259425 350 2 69-76
10036033 350 4 Crate motor, 2 pcs seal, Hecho En Mexico
10051182 2 Bowtie, non siamesed, 3.75 bore
10051184 2 or 4 Bowtie, siamesed, 4.00-4.160 bore
10054727 350 4 Made in Canada
10066036 350 4 Crate Motor, 2 pcs. seal, Hecho En Mexico
10090511 350 2 90 LT-5, ZR1 Vett, 385 HP
10125327 350 4 92-up Gen. II LT1 reverse flow cooling
10125327 350 4 96-up Gen II LT4 reverse flow cooling
10134996 4 Bowtie, Alm, 4.125 bore 2.65 Mains
10153558 350 2 91-92 LT5, ZR1 Vett, 375 HP
10199001 350 4 93-95 LT5, ZR1 Vett, 405 HP
14010201 305 2 80-84
14010202 305 2 80-84
14010203 305 2 80-84
14010207 350 2 or 4 80-85
14010209 350 4 80-85
14010280 267 2 79-82
14011148 350 Roller Cam, 1 pcs seal
14016376 267 2 79-82
14016379 350 2 77-79
14016381 305 2 80-84
14016383 305 2 80-85
14088526 350 Roller Cam 1 pcs seal
14088548 350 4 86-88 Flat tapped 1 pcs seal
14088551 305 2 86-87 Flat tappet 1 pcs. seal
14093627 305 2 87-91 Roller Cam 1 pcs. seal
14093638 350 2 or 4 87-95 Roller or Flat 1 pcs. seal
14101148 350 4 87-90 1 pcs seal
14102058 305 2 87-91 Roller Cam, 1 pcs seal
14316379 350 78-81 1 & 2 pcs. seals
Big Blocks
Number Engine M-Blts Year Description
340220 427 68-76 Truck
361959 454 73-75 Chevelle
361959 454 73-76 Pass
361959 454 75-85 Truck LD
364776 427 68-84 Truck HD
364779 366 68-88 Truck HD
473478 427 68-84 Truck HD
3732811 348 58 Pass
3751872 348 58 Pass
3755011 348 59-61 Pass
3771705 348 59-61 Truck & Replacement
3782870 427 68-76 Truck
3788068 409 62 Pass
3795623 409 61 Pass
3798962 348 62-65 Truck & Replacement Has X on side
3830814 409 63 Pass Has X on side
3844422 409 64 Pass Has X on side
3855961 396 2 65-67 Pass, 325HP
3855961 427 2 or 4 66 Corvette, 390-425 HP
3855961 396 2 or 4 66 Chevelle 325,360,375HP
3855961 396 2 or 4 68-69 Truck LD
3855962 396 2 68-69 Pass, Chevelle
3857655 348 62-65 Truck
3857656 409 65 Pass
3869942 427 66 Pass, Corvette, 390-425HP
3902406 396 2 or 4 67 Chevelle
3902466 396 66-69 Pass, Chevelle, Nova, Chevelle, Camaro
3904351 427 67 Pass, Corvette 385-390-400-430-435HP
3904354 366 66-67 Truck
3916319 366 68-85 Truck HD
1916321 427 2 or 4 67 Corvette, Pass
3916323 396 2 or 4 68 Camaro, 325,350,375HP
3916323 396 2 or 4 68 Chevelle, 325,350,375HP
3916323 396 2 or 4 68 Nova, 325,350,375HP
3916323 396 2 68 Pass, 325,350,375HP
3925521 366 68-85 Truck HD
3935439 427 68 Corvette, 430-435HP
3935440 396 68 Pass, Chevelle, Camaro, Nova
3937724 366 68-85 Truck HD
3937726 427 68-84 Truck HD
3955270 427 69 Corvette 390-400-430-435HP
3955270 427 69 Pass, 385-425HP
3955272 396 68-69 Truck LD
3955272 396 69 Pass, Chevelle, Camaro, Nova
3955272 396 70-72 Truck LD
3955274 366 68-85 Truck HD
3955276 427 68-84 Truck HD
3963512 427 68-69 Pass, Chevelle, Camaro, Corvette 385-425HP
3963512 454 70 Pass, Corvette, 360,390HP
3963512 454 70 Chevelle LS6, 450 HP
3963512 454 70-71 Pass, Chevelle, Monte Carlo
3963512 454 71 Corvette 365,425 HP
3963513 454 73-76 Chevelle, Pass
3968854 396 68-69 Truck, Pass, Chevelle, Nova, Camaro
3968854 402 70-72 Truck, Pass, Chevelle, Nova, Camaro
3969851 366 68-85 Truck HD
3969854 402 69-72 Pass, Chevelle, Camaro, Nova, Truck
3969858 427 68-84 Truck HD
3995623 409 61 Pass
3999289 454 72-79 Pass, Corvette, Chevelle, Truck
3999290 396 68-69 Truck LD
3999290 400 70-72 Truck LD, Pass, Chevelle, Nova, Camaro
3999290 402 68 Pass, Chevelle, Camaro, Nova
3999293 366 68-85 Truck HD
3999293 454 73-75 Pass, Chevelle
3999294 427 68-84 Truck HD
6272177 402 70-73
14015445 454 75-87 Truck LD
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