W208 Headers In The MAKING!
This thread will be updated as soon as I find out information.
I'm sending my old heads and exhaust manifold to a header shop. He's gonna use the heads and the exhaust manifold to build us a header out of 304 stainless steel. Price is TBD.
We want to know if anyone has any suggestions on what size of tubing to use for the collector. The primaries will be 1.54" coming off the head.
The back of the header where it bends will be 2.25" in order to connect to some 300 cell high flow cats for our primaries.
Here are some pics of the parts/measurements being used thanks to Sharduls thread.
I also attatched some of his work.
Last edited by 400HP55; Aug 19, 2012 at 08:38 PM.
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Its gonna take about 40 hours to develop the headers and about 800 dollars worth of steel.
are these headers plug n weld to existing pipes?
how is the quality of them headers?
any expectations of weld cracks in the future?
Once these are built then we will see about RHD and long tube headers.
if buying headers do I have to send my ecu to a tunershop to remap software?
or is it enuff mounting headers and then drive the car?




I kinda like the off line performance of the factory exhaust with a 2:65 gear.
Altering the torque range with a 3:00, 3:27 gear with or a 7 speed transmission might be the ultimate combination with the headers.
The later 5.5L are 32 valve as well. Ours are 24.
The headers will definately increase the db level and produce a healthy exhaust note.
Try to get a before and aft dyno spreadsheet, You might be on to something here.




I fabbed a set of headers for an engine swap one time using the flanges from the new engine and piping for veichle (ford truck). Worked well.
Other steel fabrication can be acomplished with a plasma cutter and a steady hand.
I didnt have these but made a cardboard replica of an engine mounting plate for my tractor (ford) and brought it to a welding shop that had it ready the next day less holes and minor finishing was only $40.00.
I would start with a gasket and determine flange thickness, Bolt clearence and type for an easy install and try not to dimple the pipes too much.
Cheers, Gator
Last edited by GatorMB; Dec 14, 2012 at 10:37 AM. Reason: spelling



. Great work amigo

