Chevy V8 Engine 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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