early exhaust

red cuda said

they came from a magnum engine, but haven't measured anything. I just want fitment, and clearance at this point. I have read other threads about some builders using the Flaming River Mopar conversion shaft,FR1505M. if that's the correct part number, I will get it ,if I need too.

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Honestly I don't know which conversion shaft kit you should use, maybe someone else can chime in. I've only worked on 67/68/69 bodies. The reason I ask about the size of the exhaust hole is so that others will know which manifolds to pick when they are swapping out their stock manifolds for the magnums. I know which magnum manifolds have the large (2 3/16" hole) but I'm not sure about the year of your manifolds. If you have time please post the inside diameter, year and vehicle of the manifolds you bought. My car is already set up so I'm asking for this info to help others.

PS - Here's one that I machined out to match the 340 manifold (before and after pics).

Thanks,
Treblig