cracked ex manifold or gasket
I have read that the 454 chevy cast iron exhaust manifolds are prone to cracking. Is it easy to see? I would rather that the gaskets are bad
Forum Discussion
When I first bought my coach, I found the original manifolds were cracked on my coach. One could see the cracks easily, which made me wonder why they cracked where they did. At that time, I pulled them off and welded them. That sort of worked for a while. But as time wore on, the gaskets began to leak and burn spark plug wires regularly. That is when I finally gave up and installed headers. I would also suggest that donuts tend to be another point of leaking as well.
If you do choose to go with headers, I would recommend Tri-Y. They will have a broader power band than your standard 4 single tube header. The second issue will be to choose a straight through muffler, such as Magnaflows. I played around with several different mufflers, and it makes a huge difference to choose the right thing. Without a good flowing muffler, your money on the headers will wasted.
If you do choose to go with headers, I would recommend Tri-Y. They will have a broader power band than your standard 4 single tube header. The second issue will be to choose a straight through muffler, such as Magnaflows. I played around with several different mufflers, and it makes a huge difference to choose the right thing. Without a good flowing muffler, your money on the headers will wasted.
