| Re: [GMCnet] Overbore Size [message #328506 is a reply to message #328505] |
Mon, 22 January 2018 14:19   |
James Hupy
Messages: 6806
Registered: May 2010
Karma:
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Senior Member |
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.060" is OK on the 455. .030" on the 403. If in doubt, have a sonogram
done on the block. Probably not a bad idea in any event.
Jim Hupy
Salem, Or.
On Jan 22, 2018 12:14 PM, "Carl Stouffer" wrote:
> Long story, but I have a full reciprocating assembly that I acquired from
> Steve Ferguson, that HE got from another GMCer who received it as part of a
> warranty settlement from Mondello. The only problem is that (I believe)
> it has .060 over pistons and rings. I am looking for opinions on whether or
> not this much of an overbore is an issue on a 455. If it is even
> questionable, I will try to work out some kind of a deal on those parts and
> go with
> about a .030 overbore.
> --
> Carl Stouffer
> '75 ex Palm Beach
> Tucson, AZ.
> Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive,
> Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American
> Eagles,
> Solar battery charging. GMCSJ and GMCMI member
>
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