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Discussion Starter · #1 ·
I was thinking about putting a set of headers on my 4.7, but I don't really like the idea of shorty headers. So my idea was to buy a pair of shorties. Cut the collectors off. Weld on some longer tubes with some new collectors on the end and make a pair of long tube headers.

So my Questions are......
Is there any reason this would not work?
Are any of the 4.7 headers made equal length and does it matter?
How do I figure out the correct length to make them?

I also thought about making them stepped or tri-y but that my be getting to complicated.
 

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Discussion Starter · #8 · (Edited)
I didn't think 230 hp at 4600 rpm and 290 ft lbs at 3600 was high revving. My plans for the engine are '08 intake manifold, HO cams, and maybe a 72mm TB. Oh and my Dakota is a manual so no torque converter to worry about.
 

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Discussion Starter · #13 ·
Makes sense. I just figured they only made shorty headers for the 4.7 because there wasn't enough call for the long tube headers and they were easier to install with the stock y-pipe. I was just wondering why I have never seen a race engine of any bore, stroke or rpm with short tube headers?
 
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