I've seen both 3.41 and 3.44 for the bore Assuming 3.875" bore, possibilities are: 3.41 = 241.29 3954.0cc 3.44 = 243.41 3988.8cc 3.4140625 = 241.58 3958.7cc (53/128ths) 3.4375 = 243.24 3985.9cc (7/16ths) Blueprinting specs should tell what the number really should be. Ken Quoting Frank Swygert <farna@xxxxxxx>: > > Standard bore is indeed 3.875"! Most pubs round it up to 3.88", > including Chrysler's/Jeep's. The metric specs are rounded to a single > decimal -- 98.4mm x 87.4mm -- which comes out to 3.87401575" x > 3.44094488", so you're correct in surmising the stroke is close to > 3-7/16". 3.4375" is 87.3125 mm, so it's a bit larger than 3-7/16", but > not 3-1/2" (88.9 mm). 3-31/64" seems to be about right in English > fractional units... > > ------------ > Date: Thu, 14 Aug 2008 13:56:23 -0400 (EDT) > From: adh@xxxxxxxxxxxxxxxxx (Sandwich Maker) > > I still wonder if the 4.0 isn't -really- 3 7/8" x 3 7/16" - 3.875" x 3.4375" > > > -- > Frank Swygert > Publisher, "American Motors Cars" > Magazine (AMC) > For all AMC enthusiasts > http://farna.home.att.net/AMC.html > (free download available!) > > _______________________________________________ > Amc-list mailing list > Amc-list@xxxxxxxxxxxx > http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list > _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list