| Re: [GMCnet] Overbore Size [message #328547 is a reply to message #328506] |
Tue, 23 January 2018 15:58   |
James Hupy
Messages: 6806
Registered: May 2010
Karma:
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Senior Member |
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Keep in mind that .060" is only .030" on each side. Less than 1/32". The
455 is an "OLD SCHOOL" engine. SMALL bore, LOOONG stroke. Lots of meat
around the cylinders, and a really good casting with high nickel content.
Not much problem with "core shift" in these engines compared to "modern"
engines like 350 chev. Don't believe me? Ask Dick Paterson.
Jim Hupy
On Jan 23, 2018 9:18 AM, "Jim Kanomata" wrote:
It's worth the time to contact people like Dick Patterson as he is familiar
with the 455/403
Sent from my iPhone
> On Jan 23, 2018, at 10:52 AM, John Wright wrote:
>
> Dave,
> You are not that far from Dick Paterson up in Coldwater, ONT. You can
reach him at 705 325-4554. He is the go to person on the 455 engine and
the 403 too.
>
> J.R. Wright
> GMC GreatLakerTech Editor
> 78 Buskirk 30' Stretch
> 75 Avion Under Reconstruction
> Michigan
>
>> On Jan 23, 2018, at 9:31 AM, Dave King wrote:
>>
>> On a LOT of engines 0.060" is probably over the RECCOMMENDED maximum.
>> Ken H. knows some engine people that could probably give a very educated
opinion.
>> 0.060" might work on a particular block but not on another of the same
type/brand, etc.
>> Core shift.
>> Ken H's friend might also be willing to tell us about "core shift"
>> --
>> DAVE KING
>> lurker, wannabe
>> Toronto, Ontario, Canada
>>
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