Looking for Z06 Higher Flow Exhaust Manifolds
09-12-2006, 09:23 AM
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Looking for Z06 Higher Flow Exhaust Manifolds I want to stay away from headers right now, but I'm looking for the best flow I can get with manifolds. I believe the later ZO6's have a better flowing cast iron manifold. Looking to acquire these.....
Anybody have a pair they're looking to get rid of?
Ray
Anybody have a pair they're looking to get rid of?
Ray
09-12-2006, 09:35 AM
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If you are looking to "upgrade" to Z06 manifolds, you would save more time and money by just porting your own stock manifolds. It would be better than spending money on something that will only net maybe 5 hp.
09-12-2006, 09:58 AM
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Your best bet is to save all your money and leave the manifolds alone until you're ready to buy Lt's.
It's not the flow thats the issue with them. Ok 98-00 exhaust manifolds don't flow quite as well as 01-02 manifolds. But you're talking like 2hp difference on a full bolt on motor.
Flow is not the issue. Hence people who swap to shorties usually only see 2-5rwhp at most, if that.
On a n/a setup its all about scavenging. And for this you need longer primaries in order to scavenge within an rpm range that the LS1 operates at. Mid length headers are ok on high revving setups. Lt's will scavenge in lower rpms. And lets face it the Ls1 is really a low rpm motor. Stock auto's shift at 5850rpm. And many cammed setups only rev to 6500rpm.
n/a = Lt's nothing else (sorry CA guys you just loose out, plain and simple and very unfair).
FI = Any tubular manifold, shortie, mid or LT. Scavenging does not take place with FI so maximum flow is essential. And with FI there will be enough gas flow to warrant tubular setups.
It's not the flow thats the issue with them. Ok 98-00 exhaust manifolds don't flow quite as well as 01-02 manifolds. But you're talking like 2hp difference on a full bolt on motor.
Flow is not the issue. Hence people who swap to shorties usually only see 2-5rwhp at most, if that.
On a n/a setup its all about scavenging. And for this you need longer primaries in order to scavenge within an rpm range that the LS1 operates at. Mid length headers are ok on high revving setups. Lt's will scavenge in lower rpms. And lets face it the Ls1 is really a low rpm motor. Stock auto's shift at 5850rpm. And many cammed setups only rev to 6500rpm.
n/a = Lt's nothing else (sorry CA guys you just loose out, plain and simple and very unfair).
FI = Any tubular manifold, shortie, mid or LT. Scavenging does not take place with FI so maximum flow is essential. And with FI there will be enough gas flow to warrant tubular setups.
09-12-2006, 01:52 PM
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You won't gain much from the swap. Honestly, you would have to purchase a rusted pair off of someone who did a LT purchase. Wait for a proper set of headers before you waste your time and money.
09-12-2006, 03:31 PM
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I really hate headers! I've had them on several of my past cars and got tired of tightening them and replacing gaskets. I know there are several new types of locking bolts, but I really don't want to deal with them. I am doing a set of 243's ported, 02+LS6 Cam, LS6 intake, ported TB, Opened MAF, Harland Sharp 1.7 roller rockers, so I thought I'd see if anybody that bolted on the LT's had a pair for sale cheap. (I already have Corsa's and a Bassani X-pipe) I don't want to get rid of the cats even though I have an extra set....I really don't want the car any louder. I like how it sounds now and it's gonna get a little louder with the new cam..
So in short...Still looking for a pair of cheap manifolds!
Ray
By the way it's a C5 Convertible....
So in short...Still looking for a pair of cheap manifolds!
Ray
By the way it's a C5 Convertible....
Last edited by ISeeRed; 09-12-2006 at 03:43 PM. Reason: Add comment
09-12-2006, 03:39 PM
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put headers on this car only 3 months ago--have had at least 10 sets over my lifetime and the gain is worth the hassle---even on these set-back engines which i agree are a pain....
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09-12-2006, 04:19 PM
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I've had MAC headers on my car with Stage 8 locking header bolts (about $30) for the last 4 years....I have never had to tighten them and I have never had to replace the gasket. I used new GM gaskets when installing them.
09-12-2006, 04:33 PM
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I think I still have the set I took off my '02. If you want them PM me and I'll check when I get home. It's kind of a bitch to ship, but I also have the rest of the system, including the two (instead of 4) cat system and titanium catback.
All of the above said, I would be remiss if I didn't add that I agree your best bet would be LT headers. The issues you mention haven't cropped up in over 2 years of owning my LGs. If you go stainless, they'll also last forever. If you retain a stock system with cats and CB, it won't be very noisy, either.
All of the above said, I would be remiss if I didn't add that I agree your best bet would be LT headers. The issues you mention haven't cropped up in over 2 years of owning my LGs. If you go stainless, they'll also last forever. If you retain a stock system with cats and CB, it won't be very noisy, either.
Last edited by exSSer; 09-12-2006 at 04:41 PM.
