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#1 |
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Join Date: Jan 2003
Location: jackson
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hey guys have a 400 small block chevy ?..... a buddy @ work bought one complete to build into a street strip engine. question if he puts Dart sportsman II heads on it will he have to drill steam hole in them?? somebody told him he had to & I just don't know? Thanks Greg
novamoation
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Greg Fulk 308 308X P/SA "ALL AMERICAN" |
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#2 |
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Join Date: Feb 2003
Location: Glendale, Arizona
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Yes, he does have to dril the steam holes. I would rather build a 383 based on a 350 block. The 400 blocks are known to crack in the valley area when you strat to make power wtih the OEM block. Seen this happen several times.
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#3 |
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Join Date: Dec 2006
Location: Indy
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They are not necessary, and many aftermarket heads don't even have water jackets where you would need to drill into them.
Now if you were building the engine for a tow truck or van, or an endurance racing application you'd rather have the steam holes, but with a proper cooling system, it would never be an issue. "Despite the high cost of living, it remains popular" Dave Cook C375
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"Despite the high cost of living, it remains popular." Dave Cook NHRA N375 |
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