Building an inline 6 Chevy 250 engine

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(Cylinder heads)
(Intake manifolds)
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Beginning in the mid-'70s, the inline 6 Chevy got an integrated intake cylinder head similar in design to the Ford Falcon Six. This was a step in the wrong direction for a performance engine- the intake being cast as part of the head means it would take too much work to remove it to be able to use any kind of 4-barrel carb.
 
Beginning in the mid-'70s, the inline 6 Chevy got an integrated intake cylinder head similar in design to the Ford Falcon Six. This was a step in the wrong direction for a performance engine- the intake being cast as part of the head means it would take too much work to remove it to be able to use any kind of 4-barrel carb.
  
But the detachable intake head can be fitted with a large variety of intake manifolds from the cast iron stocker to custom EFI, IR, 4-barrels, staged 2 barrels, multiple carbs from Stromberg 94/97s to Weber's, to name a few.
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But the detachable intake head can be fitted with a large variety of intake manifolds from the cast iron stocker to custom EFI (including multipoint fuel injection setups e.g. the use of Jeep 4.0 fuel injectors and the use of the Jeep throttle body requiring the use of a custom fuel rail and modifications to the intake manifold), IR, 4-barrels, staged 2 barrels, multiple carbs from Stromberg 94/97s to Weber's, to name a few.
  
 
The stock intake uses the exhaust manifold to provide heat to the intake, but if aftermarket exhaust headers and/or intake manifolds are used, this feature will be missing. For many applications that will see daily driver duty, an aftermarket intake equipped with hot water heating of the plenum is a plus.  
 
The stock intake uses the exhaust manifold to provide heat to the intake, but if aftermarket exhaust headers and/or intake manifolds are used, this feature will be missing. For many applications that will see daily driver duty, an aftermarket intake equipped with hot water heating of the plenum is a plus.  

Revision as of 22:33, 2 December 2014

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