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Warren Hall Student
Join Date: Aug 2000
Location: Los Angeles Ca.USA
Posts: 4,105
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On the question of the mating surface to the cylinders. Yes, that surface should be "decked". For the same reasons I outlined above.
Since you're going to carbs the engine will run cooler which is a good thing for it's future longevity. E cams are a nice choice if the ports are 32mm (2.7 normal). If the engine is a 2.7S CIS then the ports are 36mm in and you can go with a more aggressive cam like a Mod S (more lobe separation) which has a wide torque curve like the E but makes more power.
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Bobby
_____In memoriam_____
Warren Hall 1950 - 2008
_____"Early_S_Man"_____
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