75 Dart - 340 - Header's Choice's

supertruck said

The engine is level front to back and side to side based off the intake manifold carb mounting surface. Schumacher gives the engine location based on the distance of the crank bolt off of the driver frame rail and distance above the K member. I'm at that location and still have the foul with the idler arm.

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Thats good,is it possible that the idlerarm or K-Frame got a big hit at some time and got bent or possibly even the mount for the idlerarm messed up from the factory? thats regarding why i thought it might be worth checking if the centerlink sits level aswell,Would not be surprised if the header is not perfect just giving you a few more things to check to make sure the correct thing gets adjusted. a measuring tape and one of those thingys with a bubble can be very handy at times.

Used to work with exhaustsystems and even thougth we didnt do many mopars and especialy not many Abodies, i learnt alot walking around with a tapemeasure under the more plentyfull first and second gen Camaros and Firebirds and those where all over the map regarding all kinds of tolerances,I had a notebook where i wrote down the measurements from the cars that i found that didnt seem quite right and i realy wich i had kept that book.