Packard Forum Index » Pre-War (1899-1942)

The manifold on my car is cracked. I have heard that 1940 and later 6 cylinder manifolds are better (i.e. less prone to cracking). Anyone have experience with that, and/or pictures of the newer manifold installed on a car? I want to see how different it looks. Thanks!

The exhaust manifold for 155C,1600,1700,1800 is the same part no.356729 which supersedes 315056-330777. I believe this shows that they must have made a better later one. The later manifolds eliminated each end stud. I would use all the later manifold hold downs as there is a difference, in how they hold it to the engine block.

I have a 6 cyl manifold that appears good if you need it. Regards, John

Thanks for the info! John, sorry your part didn't work out, but thanks for the offer. If you are ever in Saratoga, look me up!

So reviving an old post. What are the later hold downs like? I have brass nuts and washers on my car.

When I remove the two outermost studs, should I put some sort of plug in them? Thanks!