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1957 - 1960 F100 & Larger F-Series Trucks Discuss the Box Style Ford Trucks

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Old 10-19-2013, 08:00 PM
69supercj 69supercj is offline
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Max overbore on a 292

I've got a 292 that is already 50 over. Whats the max safe over bore? Also my crank is 20 on the rods and 10 on the mains, whats the most you can safely turn one of these?
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Old 10-19-2013, 10:16 PM
85e150six4mtod 85e150six4mtod is offline
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This guy sells .060 pistons, not sure your motor will clean up with only another .010.

Rod and mains out to .040.

Price Sheet

I remember my dad going on and on about a neighbor's Minneapolis Moline tractor motor have a rod journal turned .120, as he ran it pounding away for quite some time before the overhaul. So, sometimes you can go more than you think!!!

This is an old article, but it says you can go .125 on overbore.

http://www.oocities.org/yblockhead/HotRodding292.html


More of the same, different author it appears, or not...again, old article:

http://www.oocities.org/yblockhead/Y...fications.html


More recent article, 2009, again, talks .120 overbore:

http://www.rodandcustommagazine.com/tipstricks/74739/

Last edited by 85e150six4mtod; 10-19-2013 at 10:25 PM. Reason: add older article
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Old 10-21-2013, 01:56 PM
312 312 is offline
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if its .050 over that's a stnd,312 piston bore.just buy a .030 or .040 312 piston enough to clean it up.
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Old 10-21-2013, 01:56 PM
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