Need Header Input
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Laughing Gas
Joined: Jul 2002
Posts: 843
Likes: 1
From: USA
Need Header Input
I am looking for informed input relating to performance drawbacks using headers with a 1 7/8" primary tube diameter on my 400 truck engine. I know that 1 5/8" is better for torque and that 1 7/8" will flow better at higher RPM's, I'm wondering just how detrimental the bigger tubes would be.
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Laughing Gas
Joined: Jul 2002
Posts: 843
Likes: 1
From: USA
53fatfndr, you are correct. Sanderson makes them for a 351C 4v head and sells the adapter for the 2v heads. I would really like to run them on my truck since it is a 4x4. I believe they would give my a much cleaner, neat installation since I have to contend with the front drive shaft and the transfer case taking up the left side of the frame opening between the transmission and the frame.
Cargo Master
Joined: May 2003
Posts: 2,561
Likes: 1
From: Earth
What year is your truck? I know Hooker makes a set for '77.5-'79 F-350, as this is the year of my 4X4. I believe they were only a few more bucks more than the Sanderson headers. Last I saw them, they were listed in the PAW catalog. If I were to put headers on my '79 F-350, I would go with the Hooker headers, if they are still available. I think Hedman makes a set as well. Check their websites, and they will have a part number and it will say if it will fit your application. Also, take that part number and run it through Summit's site, or Jegs..... whoever, and you can get a price on them. This is what I usually do when parts shopping. Good luck!
