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Just ordered headers??????

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Old Jul 1, 2008 | 01:56 AM
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Default Just ordered headers??????

So i just ordered my headers through speed inc. I was going to get 1 3/4 but he told me that i should just get the 1 7/8 so i listened to himsince im sure he knows a little more than i do. What do you guys think i should have gotten? Also what do i have to get with it to install it all? Such as gaskets o2 sims or any of that stuff and what brand of gaskets and stuff. Thanx
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Old Jul 1, 2008 | 01:58 AM
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get gm gaskets. and what headers did u get?
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Old Jul 1, 2008 | 02:13 AM
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I ordered kooks stainless 1 7/8 race headers. No emissions hookups
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Old Jul 1, 2008 | 02:16 AM
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Stock gaskets. Stock header bolts. No one sells O2 sims anymore... either wait til you get tune or just ignore the light.

Also I recommend getting o2 sensor extensions...you can manually extend the wires...but it's just much easier to buy the extensions..takes 2 seconds to plug them in..good to go.
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Old Jul 1, 2008 | 02:17 AM
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So it wont hurt my car or anything like that them to take all that stuff off then? Thanx for the input
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Old Jul 1, 2008 | 02:20 AM
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Originally Posted by Skeet Skeet
So it wont hurt my car or anything like that them to take all that stuff off then? Thanx for the input
I've been driving my car for 8 months with the check engine light for no rear o2 sensors, and no AIR. Runs great!
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Old Jul 1, 2008 | 02:33 AM
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Originally Posted by Skeet Skeet
So it wont hurt my car or anything like that them to take all that stuff off then? Thanx for the input
i have heard that the computer adjusts to the changes to run in a differnt and more safer mode because it senses a problem with the car, so u wont get the full power
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Old Jul 1, 2008 | 02:35 AM
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Originally Posted by jetlag
Stock gaskets. Stock header bolts. No one sells O2 sims anymore... either wait til you get tune or just ignore the light.

Also I recommend getting o2 sensor extensions...you can manually extend the wires...but it's just much easier to buy the extensions..takes 2 seconds to plug them in..good to go.
the stock header bolts get old man, thats not a good idea to reuse them since they stretch overtime from heat and cold
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Old Jul 1, 2008 | 02:48 AM
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Originally Posted by ae13291
the stock header bolts get old man, thats not a good idea to reuse them since they stretch overtime from heat and cold
Well..it's worked so far on 5 cars...but I understand what you're saying...
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Old Jul 1, 2008 | 10:23 AM
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Originally Posted by Skeet Skeet
So i just ordered my headers through speed inc. I was going to get 1 3/4 but he told me that i should just get the 1 7/8 so i listened to himsince im sure he knows a little more than i do. What do you guys think i should have gotten? Also what do i have to get with it to install it all? Such as gaskets o2 sims or any of that stuff and what brand of gaskets and stuff. Thanx


1-7/8" are for big cube motors, and stock 346 aint really big enough for that.

I would get the rear o2's turned off by a tuner instead of spending the money on simulators. then you could get the egr and air turned off too ( if you have egr ) money better spent there.
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Old Jul 1, 2008 | 10:54 AM
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I almost wish I went with 1 7/8 inch headers for the future when I go bigger cubes. I think you will be fine with them.
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Old Jul 1, 2008 | 10:55 AM
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Originally Posted by ae13291
i have heard that the computer adjusts to the changes to run in a differnt and more safer mode because it senses a problem with the car, so u wont get the full power
Not true. The SES light will not cause your car to go into any type of "safe mode." It will perform like it should. I've checked this with my tuner
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Old Jul 1, 2008 | 09:46 PM
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Thanx for all the help guys. I think im gna use the stock bolts cause ive talked to a few people n they havent had a problem with it.
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Old Jul 1, 2008 | 09:58 PM
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Stock header bolts are fine.. I reused my stockers and all kinds of people reuse them. I think they are only supposed to be torqued to 12 ft/lbs so its not like they are handling a hiuge amount of torque. If anyone is stretching their header bolts they are tightening they wayyyyyy too much.


Also after you get the headers in and drive the car a bit recheck he headers bolts a couple times. they tend to loosen up a bit the first few times they are heated and cooled.
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Old Jul 1, 2008 | 10:02 PM
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Originally Posted by ae13291
get gm gaskets. and what headers did u get?


hey wassup, if u need help installing the headers, i can help, im in the valley to, remember i bought the c5 calipers from you
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Old Jul 2, 2008 | 01:01 AM
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I cant wait to get them here. They are gna be loud. I got the headers with off road y and its all going through slp loud mouth Do you guys really thik ill loose power since im getting 1 7/8 headers instead of 1 3/4? Should i call them back and see if i can switch it back to the 1 3/4
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Old Jul 2, 2008 | 01:20 AM
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No you'll be fine. And whenever you get mods later on..you'll have plenty of exhaust
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Old Jul 2, 2008 | 01:43 AM
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Ok i just wanted to make sure cause i mean almost $1100 is a lot of damn money to spend and loose power lol. Thanx for all the help. Is it true that i have to lower the k member to install these? Thats what a friend told me and i wasnt sure
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Old Jul 2, 2008 | 02:08 AM
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That is a lot of money! Good thing I only spent ~$520 on my entire setup For $1100..your car had better run faster than mine! Time in my signature.

No you won't have to drop the K.
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Old Jul 2, 2008 | 08:46 AM
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I have Kooks 1 7/8" Headers on my car and there is no drooping the K member involved. You will have to the car as high as you can though to tilt the header upright enough to slide the drivers side in. Also may have to undo the motor mounts to move or tilt the engine up into place. I hope you are replacing the stock motor mounts to Poly mounts? you will also will have to undo the steering shaft.

No you won't loose any power overall with 1 7/8" headers but the Power curve will be more towards the higher RPM range so there will be a little less low end torque (3000 rpm and below) which you may notice but it wont be anything drastic.
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