Motor bore
Joined: Mar 2017
Posts: 4,255
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From: Portland, OR
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
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
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.
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