302 head exhaust port bulge and a '65 Valiant LH manifold
That isn't the problem. The problem is that the extended flat surface below the exhaust ports prevents the early A body exhaust manifold from laying flat against the head. Grinding for clearance results in cutting through into the water jacket.
I've done what you suggest though.
There are some later 318/360 manifolds that do fit but the steering coupler is in the way. The fix for that is a smaller Borgeson U-joint coupler. It isn't a perfect fix though....You lose the "plunge" feature that the stock coupler has.
That isn't the problem. The problem is that the extended flat surface below the exhaust ports prevents the early A body exhaust manifold from laying flat against the head. Grinding for clearance results in cutting through into the water jacket.
I've done what you suggest though.
There are some later 318/360 manifolds that do fit but the steering coupler is in the way. The fix for that is a smaller Borgeson U-joint coupler. It isn't a perfect fix though....You lose the "plunge" feature that the stock coupler has.
