350 X .030 over is 361....Correct ???? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 09-09-2011, 07:58 AM
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350 X .030 over is 361....Correct ????

My wife and I are back in the rod, racer, muscle car, lifestyle, after about 30 years. Family, education, and climbing the corporate ladder, kept us away. Just got on the road, 72 Nova (originally created as 6 cyl, auto).....Frame up restoration with every item below the paint, powder coated, or, brand new. Very happy with work done to date, but still need to finish interior. My question is the 350 was bored .030 over, with stroke remaining stock. Edelbrock cam, Edelbrock 65 cc heads, Edelbrock intake, Edelbrock carb. Am I correct when I tell people my engine is a 361 ? OR should I stick with 350 bored 30 over ? Thanks, Meikotom

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Old 09-09-2011, 08:15 AM
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a .030 over 350 is 355.1 cu/in.
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Old 09-09-2011, 09:16 AM
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Calculating displacement is easy. (pi/4) x bore^2 x stroke x number of cylinders

If memory serves. Or find a webpage and put the proper values in the table.

There are other equations that serve the same function.

Its NOT 350 x .030 (10.5)
plus the original displacement (350)
and round up (361)
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Old 09-09-2011, 12:25 PM
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Here`s another way of doing so.

Bore X Bore X .7854 X Stroke X Number of cylinders =`s
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Old 09-09-2011, 12:29 PM
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Thanks for the help.........It's been a while for me, but, I will get better
Meikotom
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