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<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: vettebuilder</div><div class="ubbcode-body">Thanks for that info! So, did Motion stamp the pads on the engines or were they blank? I know bare replacement GM blocks were blank but short blocks had the CE and assembly date. Also, would Motion use a 512 block to build a 427 if the customer asked, or were they only used as 454? I see O much data on the internet about blocks and engines and stampings that I was curious as to who is correct and who isn't. I have no intentions of trying to duplicate any Motion car, I was just curious as to how the stamping and casting numbers went. I even read that Motion put their own stamps on some of the engines, so there is WAY more info out there than can possible be correct. </div></div>


(correct me if im wrong here fellas)
Almost everything ive seen in writing shows that L-88's and other BB engines that were installed by MP were usually crate engines purchased from Chevrolet. ive never seen anything from joel or any other motion employee to imply that they stamped anything on any of the installed engines to designate it as their own. from the standard replacement BB up to nastiest of LS7 transplants that were installed, the literature available states they almost all started life as a replacement crate engine from GM. so whatever was on the stamp pad from tonawanda or flint should be all thats on them.