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CHEVY Mania!

BLOCKS

Casting # Years
made
Size HP levels
used for
Notes
3970010 69 - 79350 only 145 - 375 2&4-Bolt main caps.
3970014 68 - 79350 only200 & 2552&4-Bolt main caps.
366245 78 - 82350 onlyN\A 4-Bolt main
Bowtie High Tin
14011064 82 - 86350 onlyN\A 4-Bolt main
Bowtie High Tin
3914678 68 - 79350, 327 &: 302 210 - 350 2-Bolt main caps.
3858180 64 - 67327 only250-3752-Bolt main caps.
3892657 64 - 67350, 327 & 302210-3502-Bolt main caps.
3782870 62 - 67327 only250-3752-Bolt main caps.
3789935 61 - 66283 only230-3152-Bolt main caps.
3737739 57 - 629283 only220-2902-Bolt main caps.
3951509 70 - 80400 only150-2652&4-Bolt main caps.
3951511 70 - 80400 only255 & 2652&4-Bolt main caps.
330817 70 - 80400 only150-1802-Bolt main caps.
14010207
14010209
80 - 85350 only205 & up2&4-Bolt main caps.
14088548
14093638
14316379
86 - 88350 only205 & up2&4-Bolt main caps.
1 piece rear main seal.
1012532792 & UP 350 only300 & up2-Bolt main caps.
1 piece rear main seal.
LT-1 blocks
14101148 88 & UP350 only205 & up2&4-Bolt main caps.
1 piece rear main seal.
Late model roller non LT1
10051184 86 & UP350 onlyN/A4-Bolt main caps.
1 piece rear main seal.
BOWTIE

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