LT1-LT4 Modifications 1993-97 Gen II Small Block V8

lt1 swap

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Old Oct 19, 2007 | 01:09 PM
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Default lt1 swap

I recently bought a wrecked 1994 camaro z/28, im going to swap the lt1 into my 1985 iroc, i was wondering what type of headers i will need to use, and also while the enigine is out what is my best bang for the buck without using nitrious?
thanks
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Old Nov 9, 2007 | 11:46 PM
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A hot cam kit, port matching and a 58mm throttle body will go a long way, and don't forget a custom tune for the computer to make it all run in unison.
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Old Nov 10, 2007 | 06:35 AM
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Use headers that are designed for the 3rd gen. They will fit your chassis and bolt right up to the LT1.

The 3rd gen is a couple hundred pounds lighter than a 4th gen, so it should be fairly easy to make a strong running car. Decide exactly what you want out of the car and how you are going to use it, then do lots of research. There is tons of good info on this site, but you will have to sift through piles of garbage to pick up the good stuff.
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Old Nov 11, 2007 | 12:13 AM
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Originally Posted by Razor_Blade
Use headers that are designed for the 3rd gen. They will fit your chassis and bolt right up to the LT1.

The 3rd gen is a couple hundred pounds lighter than a 4th gen, so it should be fairly easy to make a strong running car. Decide exactly what you want out of the car and how you are going to use it, then do lots of research. There is tons of good info on this site, but you will have to sift through piles of garbage to pick up the good stuff.
You have to use headers designed for the LT1 because the heades are different on the Gen 2 motors, we have the reversed cooled heads and the D port.
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Old Nov 11, 2007 | 05:15 AM
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Originally Posted by iceman15
You have to use headers designed for the LT1 because the heades are different on the Gen 2 motors, we have the reversed cooled heads and the D port.
Maybe someone else will chime in, but at this point I stand by my original post. There is nothing special about the way a LT1 header bolts up. Reverse cooling has nothing at all to do with the header. How in the world do you think people use Gen 1 SBC truck headers for budget LT1 turbo builds. It's because the headers will bolt right up.
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Old Nov 11, 2007 | 06:55 AM
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Originally Posted by iceman15
You have to use headers designed for the LT1 because the heades are different on the Gen 2 motors, we have the reversed cooled heads and the D port.
Someone has used 3rd Gen on the D-Port and have zero problems. My understanding is the circle is bigger than the D and ways.
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Old Nov 18, 2007 | 02:35 PM
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I've seen quite a few people use the 3rd gen style headers and they work fine. But if it makes you feel a little better if you can find a set of LT1 headers that will fit in the car...I'd go for it. Just my .02
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Old Nov 18, 2007 | 03:23 PM
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You can use the D-port headders or go 1-3/4. Head over to www.thirdgen.org there have been a bunch of LT1 swaps in a third gen you will find out everything you need to know.
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