Motor bore

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01-02-2019, 12:24 AM

Gunandrun77

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Motor bore

I have a 350sbc bored .060 Over what is my new cubic inches??

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01-02-2019, 01:14 AM

GeneralDisorder

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Car: 86 Imponte Ruiner 450GT, 91 Formula

Engine: 350 Vortec, FIRST TPI, 325 RWHP

Transmission: 700R4 3000 stall.

Axle/Gears: 9 Bolt Torsen 3.70

Re: Motor bore

362.5

Generally not considered safe to go .060 over without sonic testing. Walls are often too thin with that large of an over bore. Can lead to cracks which essentially makes the block a boat anchor.

GD

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01-05-2019, 04:33 PM

Roblaza

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Re: Motor bore

As far as I've seen/heard, .040 is about as big as you can safely bore a 350. Key word being safely....sure you can go bigger but as GeneralDisorder mentioned the walls get pretty thin.