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440 engine specs #1350973 12/13/12 05:46 PM 12/13/12 05:46 PM
Joined: Dec 2007 Posts: 246 gainsville, usa J johnfin OP enthusiast
johnfin OP enthusiast J Joined: Dec 2007 Posts: 246 gainsville, usa	Can someone tell me the bore size wear limits and taper for standard bore. ie 4.320 +.008 with a .012 taper.

Re: 440 engine specs [Re: johnfin] #1350974 12/13/12 05:52 PM 12/13/12 05:52 PM
Joined: Oct 2012 Posts: 1,106 Northeast V VincentVega super stock
VincentVega super stock V Joined: Oct 2012 Posts: 1,106 Northeast	Quote: Can someone tell me the bore size wear limits and taper for standard bore. ie 4.320 +.008 with a .012 taper. Factory specs: Cylinder Bore, Max out of round .005" Cylinder bore taper, max .010" when reconditioned, both should be brought back within .001" Looking for 1975 through 1978 B body 4 door sedan sheet metal or parts cars - monaco, fury, coronet. Please let me know

Re: 440 engine specs [Re: VincentVega] #1350975 12/14/12 05:50 PM 12/14/12 05:50 PM
Joined: Dec 2007 Posts: 246 gainsville, usa J johnfin OP enthusiast
johnfin OP enthusiast J Joined: Dec 2007 Posts: 246 gainsville, usa	Bores are larger on the bottom of the skirt from wear due to the geometry of the rod angle, right?

Re: 440 engine specs [Re: johnfin] #1350976 12/14/12 06:35 PM 12/14/12 06:35 PM
Joined: Aug 2010 Posts: 343 S.E.Mich D drew72 enthusiast
drew72 enthusiast D Joined: Aug 2010 Posts: 343 S.E.Mich	No, pistons have a slight taper. When you measure for wear, you measure the piston perpendicular to the wrist pin.

Re: 440 engine specs [Re: johnfin] #1350977 12/14/12 08:41 PM 12/14/12 08:41 PM
Joined: Feb 2005 Posts: 4,318 Prospect, PA BSB67 master
BSB67 master Joined: Feb 2005 Posts: 4,318 Prospect, PA	No. Not wider at the bottom.

Re: 440 engine specs [Re: BSB67] #1350978 12/14/12 11:44 PM 12/14/12 11:44 PM
Joined: Dec 2007 Posts: 246 gainsville, usa J johnfin OP enthusiast
johnfin OP enthusiast J Joined: Dec 2007 Posts: 246 gainsville, usa	I dial bore checked my block and its larger at the bottom of the bore.

Re: 440 engine specs [Re: johnfin] #1350979 12/15/12 02:51 AM 12/15/12 02:51 AM
Joined: Aug 2005 Posts: 11,543 chicagoland,usa B buildanother I Live Here
buildanother I Live Here B Joined: Aug 2005 Posts: 11,543 chicagoland,usa	That's very odd.

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