Best Answer

A 350 starts out with a 4.000" bore and a 3.48" crankshaft stroke which really only gives you 349.8 cubic inches. (Chevy rounded it up to 350)

Your engine which has the same stroke of 3.48 but now is bored .030" over (making the cylinder bored size now 4.030) total size of 355.1 cubic inches or just a 355.

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Wiki User

10y ago
This answer is:
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Lvl 1
3y ago
your decimal point is wrong over 30 is .30 not .030
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North Country 4X4

Lvl 1
2y ago
Thirty over is .03

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Q: What is a Chevy 350 engine bored 030 over called?
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