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97ram2500 04-16-2011 11:39 PM

Intake Manifold Performance/repair
So I noticed a little oil down in my intake and figured sometime this summer I would change out the plenum gasket with the kit from Hughes. I saw the hughes Air Gap FI intake manifold and would like to buy it but it's just too much money.

What is the difference between this Edelbrock RPM Intake from summit and the hughes other than $300?If I bought the one from summit will it bolt right up? Will I need a bunch of extra parts? Would putting this on with new gaskets solve the leaking problem permanent or would I still need the $100 kit from hughes with the plate?

I already have headers and duals, and a cold air intake. So if I bought a new intake manifold I would clean and mod the throttle body, plus add a new T-stat and convert it to an electric fan. Then to top it off buy an SCT tuner from hemifever. For all that I'd be looking at around $700 or so and it just seems more practical to go this route than with the hughes FI manifold.

RedRam10 04-16-2011 11:42 PM

Sounds like you've thought it through. I tend to agree with your thought process. Go for it!:smileup:

97ram2500 04-17-2011 09:17 AM

I still need some input on what the differences are between the intakes,and if this intake alone will solve the gasket problem or if I would still need the hughes plenum repair kit.

wermbang 04-19-2011 12:11 AM

Getting the aftermarket intake would solve your plenum problem.

97ram2500 04-19-2011 06:08 PM

It pictures on summit what looks to be the same as the hughes intake, Though the one from summit says it is for a carb setup and doesn't have the EGR. Will my throttle body bolt up and everything work? Do I need an extra hole somewhere for the EGR?

ScottLC 04-22-2011 02:27 AM

What you get from Hughes is a complete kit. You should be able to bolt it on with what they send you from start to finish. Brackets, shims, front mount spacers, new crossover hose, new bolts, etc, etc. Nothing to hunt up later, while updide down in the engine bay.

Considering Summit's less than stellar reputation at times... And yes, your TB will bolt on the Hughes supplied adapter.

BarryK 05-01-2011 04:00 AM

I'm going through the same decision, except that my truck is bone stock.


From the first dyno plot, it seems that the stock kegger intake has the best torque and hp until about 4000 rpm when the Airgap takes over. In the second dyno plot, (after an SCT retune) the Aigap is slightly better than stock below 4000 rpm, and much better over 4000 rpm.

My truck (1998 5.9) redlines at 5000 and I rarely go above 4000 (esp. with $4.50 gas), so I have decided to just buy the aluminum plenum plate and stay with the stock tune. It is too expensive to go the other route ($600 for the intake and $500 for the SCT).

If you have modified the engine significantly: exhaust, heads, valvetrain, supercharger, etc. and want to enjoy the high rpm performance, then you would benefit from the other route.

I believe that the aftermarket intakes are all sealed at the bottom, so they have no plenum plate or gasket to worry about.

The stock intake was designed specifically for fuel injection: long runners and large plenum space. The other intakes are really designed for carbureters, then later adapted to fuel injection. Intakes for carbureters have a design to promote atomization of the fuel/air mixture. Fuel injected intakes only have to deal with pure air. The fuel is injected at the very end of the runners. This is just my understanding after doing a bit of reading on the subject. If you look at the intakes on modern engines, such as the newer Corvette, it has long runners like the stock kegger.

Just my 2 cents.


BarryK 05-01-2011 10:02 AM

I forgot to mention the kegger mod. Hughes also sells "stage1" and "stage 2" modified stock intakes with you supplying the core. This may also be a good choice or you can do it yourself. It is a bit pricy at $465 but includes the aluminum plenum plate, new intake bolts and gaskets. The plate alone with bolts and gaskets is about $140. Unfortunately I have not seen any dyno runs to see exactly what this does to your torque curve.


Paul89 05-01-2011 11:33 AM

Hughes intake is designed by Hughes Engines and is manufactured by Edelbrock and Edelbrock version does look the same. Have not seen them side by side but I bet they’re the same. The link you have from Summit is the wrong intake for a MFI. Also you will need I believe the EGR version for a 97 plus parts to finish the setup if you decide to go this route. Hughes is a complete setup for the engine. Personally I believe in simplicity so Hughes is the way I’m going due to a complete setup and how professional the staff is there. Cost is always the bottom line for everyone and saving a couple of bills are worth doing more research other then Summit.

wabbit 10-04-2011 03:29 AM

Intake Mode
currently doing TB mod and plenum gasket, and had a thought, why not just weld the plate onto the Intake and never have any worries ever again...

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