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Installing TSP's 1 7/8" Headers

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Old Oct 7, 2008 | 11:11 PM
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Default Installing TSP's 1 7/8" Headers

Im going to be ordering TSP's 1 7/8" Headers here in about a week. There going to be installed on a 98 z28 camaro A4 (All Free mods, Lid, Smooth Bellows, TB bypass, Ported and polished TB) Along with the headers i planned on ordering GM gaskets, 02 Extenstions (do i need one or two?), MSD 8.5mm SC wire set, NGK tr55 plugs. Also what else should i do well im doing the headers (cant be to expensive)? if i wanted to remove the EGR, and AIR stuff will i need anything ?
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Old Oct 7, 2008 | 11:57 PM
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Put some hi temp anti seize on your header bolts and spark plug threads. You'll need 2 o2extentions If you remove the air and egr you'll need a block off plate for the intake manifold egr hole... Or you could buy a ls6 intake. Also and its mainly for looks, You could get stage 8 locking bolts or stuts for the headers.
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Old Oct 8, 2008 | 12:44 AM
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Originally Posted by conan
Put some hi temp anti seize on your header bolts and spark plug threads. You'll need 2 o2extentions If you remove the air and egr you'll need a block off plate for the intake manifold egr hole... Or you could buy a ls6 intake. Also and its mainly for looks, You could get stage 8 locking bolts or stuts for the headers.
I wish i could get the ls6 i might be able to this december along with a few other goodies but this is going to be it for alittle while. Also whats the best mufflers/resonastors to run ? im going to run them right off the headers temp. tell i get enough money for a true dual setup.
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Old Oct 8, 2008 | 01:08 AM
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sounds like your on the right track.
i hanestly dont think you need that big of a primary header 1 3/8ths should be pleanty for a stockish car.
that big of a header is for biger ci motors.
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Old Oct 8, 2008 | 01:23 AM
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Originally Posted by shaun
sounds like your on the right track.
i hanestly dont think you need that big of a primary header 1 3/8ths should be pleanty for a stockish car.
that big of a header is for biger ci motors.

Well i looked at the dyno results on a fairly stock ls1 (posted by TSP here on ls1 tech) and the 1 7/8" headers gained HP and TQ by a fairly respectably amount over the pacesetter 1 3/4". Plus i dont plan on leaving the car stock... Im doing a fast intake setup this winter, and a MS4 or a cam like it along with a set of heads and mybe a 100 shot down the road. I just figured might as well do it right the first time.
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Old Oct 8, 2008 | 08:11 AM
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Originally Posted by shaun
sounds like your on the right track.
i hanestly dont think you need that big of a primary header 1 3/8ths should be pleanty for a stockish car.
that big of a header is for biger ci motors.
I think 1 3/8 primary would be alittle to small https://ls1tech.com/forums/generation-iii-external-engine/981229-stock-motor-1-3-4-vs-1-7-8-engine-dyno-results.html
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Old Oct 8, 2008 | 08:20 AM
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Best time to do motor mounts is when your adding headers.
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Old Oct 15, 2008 | 09:35 AM
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post a clip when you are done, and some dyno results for sure! and track times, duh!
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Old Oct 15, 2008 | 11:51 AM
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^ I agree might as well do them they aren't that expensive, and its alot easier to do them now with the headers off then later with them on. Its just a better chance of your y-pipe not banging. I did them and it wasn't to bad and no issues with y-pipe of the headers fitting as all. I would also get rid of the air and egr systems. It looks tons better and it frees up space in the engine bay.
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Old Oct 16, 2008 | 11:14 AM
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The 1 7/8" headers are NOT a bad idea for even a mainly stock engine. Our dyno testing showed that the 1 7/8" headers were almost identical to the 1 3/4" headers until 4500+ RPM where the larger 1 7/8" headers started to make more power and carried it out better than the 1 3/4" header. With the addition of future mods such as heads/cam the larger headers will only benefit you more down the road! Let me know if you have any other questions!

Thanks!
Jon
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Old Oct 16, 2008 | 02:35 PM
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Originally Posted by Jon@Texas-Speed
The 1 7/8" headers are NOT a bad idea for even a mainly stock engine. Our dyno testing showed that the 1 7/8" headers were almost identical to the 1 3/4" headers until 4500+ RPM where the larger 1 7/8" headers started to make more power and carried it out better than the 1 3/4" header. With the addition of future mods such as heads/cam the larger headers will only benefit you more down the road! Let me know if you have any other questions!

Thanks!
Jon
For curiosity's sake, do you have a dyno sheet for that?
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