These 304 stainless steel long tube headers are for the 2014+ LT1 and LT4 powered Chevrolet Corvette Stingray C7 or Z06. Kooks builds all of their products to the highest standard, and these are possibly the best headers you can buy for your C7. They feature 1 7/8" primaries, and 3" merge collectors with O2 Bungs welded into the collector. With a proper tune, these headers are good for 20-35HP depending on the vehicle.
To connect these headers to your stock or aftermarket axleback exhaust, you will need a Kooks high flow X-pipe. These all 304 stainless, high quality X-pipes come with 3" inlets and 3" outlets. They connect your new Kooks headers to your stock or aftermarket axleback exhaust. These X-pipes can be purchased without cats (off road), with standard high flow cats, or with Kooks high flow Green catalytic converters. The standard cats require custom tuning or they will throw a CEL. These new Green cats from Kooks are the highest quality aftermarket performance cats you can buy. In many situations they do not throw a CEL. On top of the standard rear O2 bungs, these X-pipes also include an extra O2 bung and screw cap for wideband tuning.
Includes O2 Extenders, along with all bolts and gaskets needed for installation.
Which Header Size Should you Choose?
The 1 7/8" headers are intended for bolt on and mild internal engine work applications like a small cam. For cars modified on a higher level like heads and cam, nitrous, or supercharged, 2" Headers are recommend. If you are not clear on your future intentions, you can run 2" headers on a bolt on LT1 motor with very little change in the power curve anywhere. Choosing the larger header size up front will give you room to grow with little downside in the short term.
http://juicedmotorsports.com/C7/kok-21702400_xl.jpg
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