Big block Chevy heads
(→Common BBC casting numbers: format table) |
m (→Chambers) |
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There are also "semi-closed" chamber heads like the c/n 215 heads. They are shaped more like an open chamber head, but with less volume. These heads are a decent choice for a production head especially on a smaller displacement engine (up to 454 cid). Casting number 820 heads are similar to the 215 semi-closed head, but with less quench pad area. | There are also "semi-closed" chamber heads like the c/n 215 heads. They are shaped more like an open chamber head, but with less volume. These heads are a decent choice for a production head especially on a smaller displacement engine (up to 454 cid). Casting number 820 heads are similar to the 215 semi-closed head, but with less quench pad area. | ||
| − | [[File:Closed vs open chamber bbc.jpg|thumb|left|300px|Closed chamber top, open chamber bottom]][[File:Semi-closed.jpg|thumb|350px|c/n 215 | + | [[File:Closed vs open chamber bbc.jpg|thumb|left|300px|Closed chamber top, open chamber bottom]][[File:Semi-closed.jpg|thumb|350px|Semi-closed chamber, c/n 215 shown]] |
| − | [[File:Bbc 820 sc.jpg|thumb|left|350px| | + | [[File:Bbc 820 sc.jpg|thumb|left|350px|C/n 820, note how the exhaust valve has less shrouding than the other chambers]] |
| − | [[File:Bbc 702 cc.jpg|thumb|c/n 702]] | + | [[File:Bbc 702 cc.jpg|thumb|Closed chamber,c/n 702 shown]] |
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