IIRC, the 343 block wasn't strong enough for the extra force after the needed clearancing was done to allow the longer throws? I know the guys who did the 401 into 360 blocks needed to sonic check them before machining for both core shift and web strength to do 4 bolt main upgrades. From: "Rocky Lear" To: "AMC/Rambler owners, drivers and fans." Subject: [AMC-list] 401 Crank into a 343 how to sought Message-ID: Content-Type: text/plain; charset="iso-8859-1" Surely theres a tech how to on what's involved in building a 343 stroker using a 401 crank. Does anyone have any links? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://list.amc-list.com/pipermail/amc-list-amc-list.com/attachments/20110727/70af9d43/attachment.htm> _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com