Dorman ls2 intake?
#365
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that's what I was afraid of. I'm still indecisive on exactly what I want to do with the intake. I just want to finish buttoning up the cam/head install and get it back on the road. I've missed it over the last 18 months and I'm getting itchy. The DLS2 can reuse the stock fuel rail correct?
Last edited by jaxcam02; 12-18-2017 at 05:59 PM.
#370
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Btw guys, my buddy messaged the guy and he said he’s going to test a fast intake back to back with the dorman. I wish they would do that and then do a mild clean up job on the dorman and then retest it on the same day. That would be pretty interesting. I’ve been contemplating swapping intakes for a fast but I’m not so sure I should even waste my money on it. Especially knowing I have to buy fuel rails too. My car runs exceptionally well for what I’ve got done to it and I feel like the intake has added a good bit to it.
#372
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https://m.facebook.com/richard.holde...27203077291091I just read from where I left off. I want to let you guys know a few things I didn’t see posted....some very good info for you and made me feel good about my choice for this manifold.
1) I recommend buying an intake from tech@ws6store. Very highly. I was having an issue with my install and he helped me out even though I didn’t buy my intake from him. I wish I had. We emailed back and forth probably a dozen times and he always replied within 30 minutes and I didn’t even buy the intake from him. So whether he’s a few bucks higher or not (his prices on some things I looked at were cheaper than everyone else btw) I’d recommend buying from him because the communication is second to none.
Please note, you MUST CHANGE the valley cover bolts to the lower profile bolts that come with the manifold. I had been having some serious tuning issues because of a vacuum leak I had. Tech@ws6store helped me find that problem. So be aware that you need to use the lower profile bolts or it will hit the bottom of the intake keeping it from seating.
Now for the info everyone has been waiting for. This was posted on Facebook. A guy did back to back Dyno testing of the most powerful factory cathedral port intake (trailblazer ss) you can get vs the dorman ls2. Amazingly the power curves were identical. The engine was retuned for both manifolds. And I seriously doubt the dorman was even cleaned up which I guarantee it worth several hp. This was a 5.3 with a cam. Enjoy....
Here’s the video link if you guys can pull it up.
https://m.facebook.com/richard.holde...27203077291091
![](https://s26.postimg.org/sllv5rsop/6_CFA3_A2_C-5_D21-4468-_AAA5-3_B8_CEC91_D3_A7.png)
![](https://s26.postimg.org/9j2hiuho9/8_E152_C7_A-_C780-40_BC-_A188-_B0_A24_DD93_FCD.png)
![](https://s26.postimg.org/7d86oce7t/BEC4_FFAE-2_C0_D-46_F9-9508-_BB7_E55_EBBBE9.png)
1) I recommend buying an intake from tech@ws6store. Very highly. I was having an issue with my install and he helped me out even though I didn’t buy my intake from him. I wish I had. We emailed back and forth probably a dozen times and he always replied within 30 minutes and I didn’t even buy the intake from him. So whether he’s a few bucks higher or not (his prices on some things I looked at were cheaper than everyone else btw) I’d recommend buying from him because the communication is second to none.
Please note, you MUST CHANGE the valley cover bolts to the lower profile bolts that come with the manifold. I had been having some serious tuning issues because of a vacuum leak I had. Tech@ws6store helped me find that problem. So be aware that you need to use the lower profile bolts or it will hit the bottom of the intake keeping it from seating.
Now for the info everyone has been waiting for. This was posted on Facebook. A guy did back to back Dyno testing of the most powerful factory cathedral port intake (trailblazer ss) you can get vs the dorman ls2. Amazingly the power curves were identical. The engine was retuned for both manifolds. And I seriously doubt the dorman was even cleaned up which I guarantee it worth several hp. This was a 5.3 with a cam. Enjoy....
Here’s the video link if you guys can pull it up.
https://m.facebook.com/richard.holde...27203077291091
![](https://s26.postimg.org/sllv5rsop/6_CFA3_A2_C-5_D21-4468-_AAA5-3_B8_CEC91_D3_A7.png)
![](https://s26.postimg.org/9j2hiuho9/8_E152_C7_A-_C780-40_BC-_A188-_B0_A24_DD93_FCD.png)
![](https://s26.postimg.org/7d86oce7t/BEC4_FFAE-2_C0_D-46_F9-9508-_BB7_E55_EBBBE9.png)
#373
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#374
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Do you have ANY proof to claim other than what the dyno tests show?? Richard Holdener has done hundreds of credible dyno tests. He has nothing to gain by BS-ing one like this one.
In other words, what do you have to refute this??
In other words, what do you have to refute this??
#375
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Well I thought this Richard H. was a credible legit guy . But you can throw that out the window. This test is bogus to suggest that any dorman intake let alone out of the box .Can hang with the TBSS across the board and under the curve is ludicrous . Don't believe it . What's this guy going to do next , a factory stock cylinder head test and tell us that 862 heads make more power than 243s will .
The info is interesting though. And so is the choice on fuel injectors lol.
#376
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Very true! It's just that when someone cries "Bullshit!!" without any credible proof otherwise, it's just BS on their part.
#377
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I don’t know the guy so I don’t have a dog in this fight but one wonders why he’d deliberately fudge a test like this? It does not matter to me either way. I have one on my car and I know it’s faster than the ls6 intake I had on it. I had to retune the car for more airflow when I installed it. But anyone is completely free to believe what they want to.
#378
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This.
I don’t know the guy so I don’t have a dog in this fight but one wonders why he’d deliberately fudge a test like this? It does not matter to me either way. I have one on my car and I know it’s faster than the ls6 intake I had on it. I had to retune the car for more airflow when I installed it. But anyone is completely free to believe what they want to.
I don’t know the guy so I don’t have a dog in this fight but one wonders why he’d deliberately fudge a test like this? It does not matter to me either way. I have one on my car and I know it’s faster than the ls6 intake I had on it. I had to retune the car for more airflow when I installed it. But anyone is completely free to believe what they want to.
#379
TECH Senior Member
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I think some guys can't handle the fact that Dorman is doing a fairly decent job of making good replicas of stock manifolds, even improving on them when they can. He likely has a TBSS manifold and can't handle that there is another OEM-style manifold that almost equals it.
#380
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