what manifolds for magnum

cudarudy said

I installed a 5.2 magnum in a 69 cuda having problems with 340 exhaust manifolds , can't get them to seal to ehxhaust port on rear drivers side. I could use the 69 318 manifolds or manifolds from the magnum engine or will dougs headers fit the magnum heads. Really don't want to use headers . Will the magnum manifold work with power steering?

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Check to make sure the inside of the down section of the manifold is not being held outward from a smog boss on the magnum head. This is a common fitment issue with newer heads and when using 340 exhaust manifolds. If this is the issue then grind the smog boss down to the point that the manifold sets flat against the head ports.Surfacing the exhaust manifold will only make the issue worse.