Boring a gen V 454 bowtie 4 bolt maint to .120"?
12-15-2012, 04:12 PM
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Airbats,
If your block is, in fact, a Gen V Bowtie (9.800/10.2) block, youre in great shape for the proposed modifications.
Gen V Bowtie blocks were a siamesed cylinder case with elliptical bores. They were delivered with a raw bore size of 4.250 and a minimum wall thickness of .500. A bore size of 4.500 (in your case .250 over) was conservative, and the block was designed to provide a .325 wall thickness on the major and minor thrust faces @ 4.600 bore dimension. The recommended max stroke was 4.600.
Regarding HP rating for the blocks, the nodular cap block was conservatively rated to 800 HP and the 8620 cap block was rated to 1200 HP. Again, this information is predicated upon you having a Gen V Bow Tie block. If you need the casting numbers validated, let me know.
Bob
If your block is, in fact, a Gen V Bowtie (9.800/10.2) block, youre in great shape for the proposed modifications.
Gen V Bowtie blocks were a siamesed cylinder case with elliptical bores. They were delivered with a raw bore size of 4.250 and a minimum wall thickness of .500. A bore size of 4.500 (in your case .250 over) was conservative, and the block was designed to provide a .325 wall thickness on the major and minor thrust faces @ 4.600 bore dimension. The recommended max stroke was 4.600.
Regarding HP rating for the blocks, the nodular cap block was conservatively rated to 800 HP and the 8620 cap block was rated to 1200 HP. Again, this information is predicated upon you having a Gen V Bow Tie block. If you need the casting numbers validated, let me know.
Bob
THanks for the reply, I already checked the casting numbers and thats what I came up with. GOod to know
