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Question on headers


19Cutlass94

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Hey guys, heres a quick question on headers... we all know that N/A cars want equal length primaries for headers. But as a guess ( since I doubt anyone has dyno'ed this ) how much power is to be lost between equal length primaries and non equal length? Either way I know they are better than manifolds..

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Depends on how "optimized" the "equal-length" headers are. If the headers are equal length, but WAY TOO LONG or WAY TOO SHORT, or WAY TOO LARGE DIAMETER, I'd rather have the non-equal length units if they're reasonably close to correct.

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If this is for an LQ1 motor, I have read that there is little improvement to be made by replacing the stock setup with anything aftermarket. I cannot say for sure if this is true or not, but unless you are absolutely set on equal length, from what I have seen on mine, the stock setup seems pretty good already. The best mod I have heard so far was to heat wrap them to reduce the under hood temps which I wish I would have thought of when I had the motor rebuilt this past spring.

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What car is this for even?

 

For mine.

 

Headers are already being made for LQ1 W-body cars. But the 3100/3400 W-body cars is different. Only two places I found are WOT-Tech and Milzy. Both are expensive, and you need to use Milzy's DP with the headers., which makes Milzy's almost twice the price..

 

S&S arent made anymore, even though they do pop-up on ebay and such from time to time... Pacestter are just absolute JUNK.

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For mine.

 

Headers are already being made for LQ1 W-body cars. But the 3100/3400 W-body cars is different. Only two places I found are WOT-Tech and Milzy. Both are expensive, and you need to use Milzy's DP with the headers., which makes Milzy's almost twice the price..

 

S&S arent made anymore, even though they do pop-up on ebay and such from time to time... Pacestter are just absolute JUNK.

 

WOT-TECH makes LQ1 headers?!?!?!?!?!?!??! The 4-figure milzy's are the only ones I know of.

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Milzy is the only one I know of that makes LQ1 headers. And at $999 I doubt very much he sells alot of em.

 

Oh, I thought your post said both did. I would love headers, but 1k+ is a bit steep and when they came out a few years ago the design wasn't well received.....

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Honestly I don't see you making enough power NA to justify having headers. Not to mention the packaging nightmare you would have trying to put six pipes together where two normally go. Adam made a front log and ported his factory rear IIRC. If I was staying NA I would do that. If/When I pick up my project to take my TGP parts I will be making logs front and rear.

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Honestly I don't see you making enough power NA to justify having headers. Not to mention the packaging nightmare you would have trying to put six pipes together where two normally go. Adam made a front log and ported his factory rear IIRC. If I was staying NA I would do that. If/When I pick up my project to take my TGP parts I will be making logs front and rear.

 

The milzy's fit in there ok and they're worth horsepower even on a stock LQ1. Hell I've heard even a better downpipe on stock manifolds is worth power because its all so restrictive.

 

dohcheaders1.jpg

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The milzy's fit in there ok and they're worth horsepower even on a stock LQ1. Hell I've heard even a better downpipe on stock manifolds is worth power because its all so restrictive.

 

dohcheaders1.jpg

 

Actually, LQ1 DPs aren't really restrictive at all and they're already 2.5". Not sure how you would upgrade them.

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Milzy is the only one I know of that makes LQ1 headers. And at $999 I doubt very much he sells alot of em.

 

I very highly doubt that the power increased is worth that $1000.

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Well what it's worth is always in the eyes of the beholder and also depends on how deep their pockets are.

 

 

I've priced out what all I will need to make my own headers, and it comes out to be aboot $300-$400.

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