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|I've not specifically read up or researched the particular application but; Cast is somewhat prone to cracking at some point. As I posted somewhere else on here about how even stock manifolds get red-hot under even basic aggressive driving and the stress it endures is more than most people understand. The steel tubular headers will/would still got equally hot without the issues of cracking unless there's a stress issue, i.g. Exhaust is hanging more than it should due to bad hangers and putting a stress point in place along the way.
EDIT: How hot is exhaust hot?
Flow characteristics are far better in tube than cast material as well in nearly every situation but PaceSetter headers which ironically only work to add power to 66'-78' Volkswagon Beetles with their crimped ty ends. The physics doesnt add up to explain how that is or isnt unfortunately.
The better flow will actually improve the shift points to a smoother power feel, MORE than just an exhaust.
Last edited on Wed Dec 6th, 2017 06:24 pm by Undrstm8ed
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