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Z28 Headers on a PPV

Posted: Tue May 16, 2017 10:42 am
by Pursuit
I acquired the Z28 Tri-Y headers almost a year ago for $300, shipping included. They did not come with the heat shields. I was finally able to compare them to our cast manifolds (PPV/SS/ZL1). I mocked them up using the SS/ZL1 catalytic head pipes.

Re: Z28 Headers on a PPV

Posted: Tue May 16, 2017 10:51 am
by Pursuit
We installed the headers onto the engine. We sectioned the head pipe flanges off of the piping for the cats. we bolted the flanges to the header and then removed approximately 1-1/2" from the "height" of the pipe, just above the O2 sensors.

Re: Z28 Headers on a PPV

Posted: Tue May 16, 2017 10:53 am
by Pursuit
And now the view from the top with the heat shields installed.

Re: Z28 Headers on a PPV

Posted: Tue May 16, 2017 12:20 pm
by CrashTestDummy
Nice work, there. Looks all factory-like. :D

Re: Z28 Headers on a PPV

Posted: Tue May 16, 2017 12:44 pm
by s/c'd cav
what did you pay for the Z28 headers ? last i remember they werent to cheap

Re: Z28 Headers on a PPV

Posted: Tue May 16, 2017 1:37 pm
by Pursuit
I kept a look out on eBay for a set. Less than $300 shipped. Every once and awhile a set will pop up.

Regards,

Maurice

Re: Z28 Headers on a PPV

Posted: Tue May 16, 2017 1:46 pm
by s/c'd cav
thats reasonable , guess ill have to keep a eye out

Re: Z28 Headers on a PPV

Posted: Tue May 16, 2017 6:06 pm
by xcidmigs
Did you have to buy the z28 heat shields also or they were transfered over? Seems very obvious from the one photo that the section of tubing that connects the front cats to the manifold is much smaller diameter than the other sections used between the cats and the final pipe. This whole operation makes me think the hot ticket will be a set of coated shorty headers and have that front pipe replaced with 2 1/2"

Re: Z28 Headers on a PPV

Posted: Tue May 16, 2017 11:33 pm
by Pursuit
I also bought a set of 2017 LT4 headers and cats. The heat shields that came with them were an exact swap back to the Z28 headers. FYI they are very similar in design, but, the cylinder head exhaust flange is different due to the direct injection head design, and the collector is at different angle and uses four bolts for the cats. The LT4 header also has a 2" outlet...
Yes, the pipe leading into the catalytic converter is 2" and the outlet of the Z28 header is 2" also. Depending on the outlet diameter of a shorty header, increasing the pipe size could be beneficial. Anybody have a shorty header they could measure?

Regards,

Maurice

Re: Z28 Headers on a PPV

Posted: Tue Apr 23, 2019 9:38 pm
by chipperdoodles
Was this fit to the stock exhaust? I like the compact tri-y nature of the ls7/z28 manifolds. There's nothing on the aftermarket really like them, just shorties and longtubes.