best intake manifold for mostly stock 5.0?

[leakyfaucet]

I'm interested in buying a used intake manifold for my mostly stock 5.0. What would you all say would be the best in terms of performance, price, and craftmanship? I was thinking of the GT40/cobra manifold but wasn't sure if a edelbrock performer outperformed them. How do these and other milder intake manifolds compare to each other? Are there any write-ups on this?

Thanks!

 

[Black331Stang]

either of thoser choices would be good, but IMO i say go with the cobra. looks cool and does its job. Also Tmoss ports stock lower intakes for like 100 bucks. sleeper look and it performs just as good as some aftermarkets on a mild combo and hell of alot cheaper. its the lower that is rescricting, the upper is pretty good.

 

[TIMMY2734]

Yup what he said. Best bet is to stay with the gt 40/explorer or cobra intake. Or just have TMOSS do your lower

 

[Dtowncats]

Yeah I would say the same thing. Just get the lower ported on a stock 5.0. By the way does anyone know what kind of gains can be expected from one of these on a stock 5.0?

 

[leakyfaucet]

Thanks for the responses. So assuming I got a cobra manifold, would it be beneficial at all to port the lower at that point? Or do you port the lower of a cobra once you have done other things? I would think that it might make it too wide and kill flow, since it would be wider than the ports on the stock head. Or am I completely off?

 

[88stangmangt]

not much 5-10 hp on a lower port job

 

[Michael Yount]

You don't need to port the lower on a Cobra/Explorer/GT40 on a mostly stock motor. The heads are a restriction that can't outflow those stock intakes, so porting them does no good. Similarly, the stock lower intake on the HO is the restriction - so having tmoss port it will allow the stock HO upper/lower to flow almost as well as the stock Cobra/GT40/Explorer intakes do - at much less cost. So, you can spend $200-$400 on a used intake, or you can spend about $150 on having tmoss port your stock lower. Performance will be about the same. And your car looks stock externally. And there are no vacuum lines to re-route. And you're sure everything fits. And no questions/hassles at emissions inspection time. And you save a couple hundred bucks. tmoss has dyno data to let you know what you can expect in terms of gains. Pm him and he'll share it with you.

 

[leakyfaucet]

Are there any vacuum line routing problems with a cobra manifold?

 

[Michael Yount]

No 'problems' per se; but the vacuum ports aren't configured the same as on the stock HO, and for some reason that confuses people, or requires them to buy some different size hose and plastic fittings to hook everything up.

 

[GroverDill]

I like my Cobra intake, it has served me well.

I am considering going to a performer, need a few more HP!

 

[90mustangGT]

I have the Edelbrock Performer. It has really even flow numbers between runners and has lots of room to grow. The back of the upper comes off, anyone could port it easily and the lower has plenty of room to grow and grind as well. You can also swap out the upper for the RPM instead of buying a whole new intake, alot easier too. The RPM II will bolt up also, but the lower will have to be matched, or at least that's what I have heard.

The cobra is nice, comes with the EGR built in, no need to but a EGR spacer when buying a TB, which I really recomend if your going to do an intake becaue the stocker is going to hold you back a lot.

 

[leakyfaucet]

Thanks for the replies.
Will the stock EGR valve bolt up to the Edelbrock performer?

 

[Na5.0HO]

Yup... I just got a ported Edelbrock Performer 5.0, which is waiting to go on and I'm using the stock EGR. I know it'll outflow my stock heads like crazy, but it will still be a nice improvement over the stock intake... right?

 

[leakyfaucet]

Definetly should be. Does anybody know how much higher it will make power? As in how much it is worth to let the engine rev before you shift... What RPM would be good to shift at with just the performer?

 

[millhouse]

Definetly should be. Does anybody know how much higher it will make power? As in how much it is worth to let the engine rev before you shift... What RPM would be good to shift at with just the performer?

Off of the top of my head, I'd have to say it increased my shift rpms right around 300.

 

[jrtcarter]

I like the Trick Flow Street Heat. I found it at pacificaperformance.com for $340 for upper and lower. Hard to beat for the money. Just my opinion.

 

[tmoss]

You need to consider what heads (and cam?) you might change to later before deciding on an intake.

 

[leakyfaucet]

I guess I'd like something flexible. I'd probably keep the stock heads for about another year or so. I guess the answer for me would be to let your port the stock lower just because it's cheap, and then swap in a better intake once I do heads. For a stock head/cammed car, do you think a ported stock lower would outperform the edelbrock performer overall? (ETs)

 

[tmoss]

I guess I'd like something flexible. I'd probably keep the stock heads for about another year or so. I guess the answer for me would be to let your port the stock lower just because it's cheap, and then swap in a better intake once I do heads. For a stock head/cammed car, do you think a ported stock lower would outperform the edelbrock performer overall? (ETs)

On stock heads, the woud probably be the same average numbers from 2,000-5,600 rpm or so. Go to the website in my signature and look at the ported lower vs Performer dyno data. WhiteDevil's dyno is not posted as we ran out of website space, but I can email it to you if you want to see it, but thte data from it is in the graphic comparison.

 

[willys1]

Hey Tom,do you have any ported cobra,or gt-40 intakes?