SBC Chevy Block casting numbers

Casting # Years
made Size HP levels
used for Notes
3703524 55 265 N/A Passenger
First 6 mos. used mech. cam not hyd.
3720991 56 – 57 265 N/A Truck/Pass
3731548 57 283 N/A N/A
3556519
3737739 58 – 61 283 220-290 2-Bolt mains/Truck/Pass
3849852 58 – 64 283 220-315 2-Bolt mains/Truck/Pass
3789935
3864812 62 – 64 283 230-315 2-Bolt mains/Truck/Pass
3959512 62 – 63 327 250 2-Bolt mains
3789817
3794460
62 – 64 327 250 2-Bolt mains
Truck/Pass
3858174 62 – 67 350, 327 & 302 210-350 2-Bolt mains/Truck/Pass
3782870 62 – 67 327 250-375 2-Bolt mains/Truck/Pass
3858180 62 – 67 327 250-375 2-Bolt mains/Truck/Pass
3791362 65 – 67 327 N/A 2-Bolt mains/Chevy II
3892657
3782870
3903352
3789817
64 – 67 350, 327 & 302 210-350 2-Bolt mains
Truck/Pass
3849852
3849935
3896944
393288
65 – 67 283 N/A Truck/Pass
389257 67 – 69 302 N/A 2-Bolt mains
67 Small Journal (327 block)
68-69 Large Journal (350 block)
3914653
3914636
3932373
3970020
68 – 73 307 N/A Truck/Pass
3956632 69 307 200 2-bolt mains
3914660 68 327 210-275 2-bolt mains
3790041
3814660
3955618
68 – 69 327 210-300 2-Bolt mains
Corvette/Camaro/Hi PO
3914678 68 – 79 350, 327 &: 302 210-350 2-Bolt mains
3855961
3958618
3970014
6259425
68 – 76 350 210-300 2-bolt mains
Pass.
3970014 68 – 79 350 200-255 2&4-Bolt main
3956618
3932386
68 – 79 350 & 302 250-300 4 bolt mains
Truck/Hi Perf
3970010 68 – 79 350 & 327 145-375 2&4-Bolt mains/Truck/Hi Perf
3932388 69 350 300 4-bolt mains
3951511 70 – 73 400 255-265 4 Bolt mains/HD Truck/Pass
330817 70 – 80 400 150-180 2-Bolt mains
360851 74 – 76 262 N/A Monza
3951509
3030817++
74 – 76 400 150-265 2 Bolt Mains
++High Nickel Block
460776
460777
460778
361979
78 – 79 305 N/A Lt. Truck/Pass
14016379 78 – 79 350 N/A Lt.Truck/Pass
366245* 78 – 79 350 NA 4-Bolt mains
*Bowtie High Tin
Dipstick in Pan
1401280
14016376
471511
79 – 82 267 N/A Passenger
14010201
14016381
14010202
14010203
80 – 84 305 N/A Lt. Truck/Pass
1401029
14010207
14010209 80 – 85 350 205 & up 2&4-Bolt mains
Passenger cars
14011064* 82 – 86 350 NA 4-Bolt mains/*Bowtie High Tin
14088548
14093638
14316379 86 – 88 350 205 & up 2&4-Bolt mains
1 piece rear main seal.

Comments are closed.