Originally Posted by Sniper
Originally Posted by elmor353
Was just curious as to why RockAuto was showing the same numbers for complete mount assemblies on both engines. Guess I will shim the new mount. Thanks guys.


Because you can shim the 318 mount to fit the 340/360. But you cannot go the other way. So the aftermarket cheaped out by just making the 318 mount. Of course, the question in my mind is why Chrysler make the mount ears different?



Who knows why most automotive engineers did half the stuff they did over the years? Maybe the bean counters figured they could save two cents per 340/360 block by moving the one ear on the block, or maybe some guy in the design department wrote down the wrong measurement for the casting department on the 340/360 blocks, or maybe the guy in the casting department read the numbers wrong on a Tuesday morning after a long hard weekend.