Weiand Intake Vs Eldebrock Intake??
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Senior User
Joined: Jan 2008
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Weiand Intake Vs Eldebrock Intake??
Hello i have a 400 thats in my street rod, i am looking into upping the heads and cam to a more high performance one. I currently have eldebrocks cam, intake, holley carb bored 30 over. should i switch out intake manifold to the weiand or is that eldebrock fine? ive heard that the eldebrock performer is not the best intake to use due to it not flowing as good at high rpm. Thanks
Junior User
Joined: May 2008
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From: Union,NJ
The Edelbrock is fine for a 400M
first of all the 400M is not a high rpm motor, 6500 tops. It stops making power above that, and you are asking for trouble in your engine.
the Weiand is for better flow at higher RPMS
or above 600HP
stay with the Edelbrock !
first of all the 400M is not a high rpm motor, 6500 tops. It stops making power above that, and you are asking for trouble in your engine.
the Weiand is for better flow at higher RPMS
or above 600HP
stay with the Edelbrock !
Junior User
Joined: Jul 2007
Posts: 71
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I have to ask what makes a 400 NOT a high rpm motor? It is a 351C with a 1" taller deck height. You can build the 400 to do anything the 351C can and then some. And there is no such thing as a 400M.
If you are really looking to turn it then install a 351C intake (with adapters).
If you are really looking to turn it then install a 351C intake (with adapters).
Posting Guru
Joined: Jul 2007
Posts: 1,355
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Yes you can build a high reving 400, the thing is that they have alot more friction to work with due to the 4" stroke so it would take big port heads even bigger that the 4v (iv simulated them and cant seem to pass the the power band over the 6.5k limit) and a blower to fill in the ports with good velocity, also the standard connecting rods are said to be good enogh to rev up to 7.5k (dont know how true this is), anyways In my built im aming for 5k mid range maybe later ill get some 4v heads and aim for 6.5k who knows.... people use this engine for its stroke due to torque so almost nobody with a 400 is willing to go high in the rpms..they just dont need it, my opinion.... yes use the weiand for better mid range if your aim is higher rpm use a singleplane...
Junior User
Joined: Jul 2007
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The guys running 460s stroked past 500 cubic inches do not seem to have a problem and their heads are not as big as 4V Cleveland heads. There is no issue with friction or filling the cylider. There is not a whole hell of a lot of difference between the edelbrock and Weiland intakes. If you already have the e-brock then run it.
Check out Engine Masters Challenge if you want some build ideas and see what the motors are capable of.
Check out the TMeyer sponsor link at the top of the page for some dyno results for the 400 engine project.
Check out Engine Masters Challenge if you want some build ideas and see what the motors are capable of.
Check out the TMeyer sponsor link at the top of the page for some dyno results for the 400 engine project.
Junior User
Joined: Oct 2007
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hi old blue, all components depending on type, style, duration, c.f.m. etc. etc. mean
more to your motor than "brand" . yes some are better than others but most times it is
compatability of parts rather than "brand name"
more to your motor than "brand" . yes some are better than others but most times it is
compatability of parts rather than "brand name"
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Freshman User
Joined: May 2006
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for what it is worth just changed my intake from sp2p edelbrock to weiand 8010, and did not see much change. lost a little on bottem and gained a little on top, but i only turn 4500 rpms. if you are going to turn 5000+ the weiand is the way to go, but i could not think there would be much gain if you have the performer edelbrock.
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Postmaster
Joined: Aug 2001
Posts: 4,270
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From: Delaware
Stock 460 exhaust ports flow like sludge in winter. I don't think a 460 will rev past 5K without aftermarket heads or serious porting.
The Weiand #8010 is my first choice in a manifold for a 2V headed 400, but I wouldn't swap out an Edelbrock Performer. There is not that much difference.
The Weiand #8010 is my first choice in a manifold for a 2V headed 400, but I wouldn't swap out an Edelbrock Performer. There is not that much difference.
Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
The Edelbrock RPM Air Gap Manifold is an excellent manifold. I wish there was one available for the 400. There are many other very good manifolds available for a 351C, and $345.00 is pretty steep.
Lead Driver
Joined: Mar 2004
Posts: 8,922
Likes: 153
Weiand seems to be the one of choice but for the street it probably doesn't make any difference. What I can tell you is I bought a new Weiand ran it for more than 5 years and then sold it on ebay for pretty much what I payed for it.
Laughing Gas
Joined: Nov 2003
Posts: 898
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From: southeren Oh
The stock 2bbl heads have decent sized valves and ports and can be made to flow plenty of air. I'm building a 400 for a Mud/trail truck and have done some simple home porting and have bought some stainless valves with the undercut stems that should aslo help.
If money is no problem then by all means skip the effort and buy some of the CHI alum heads and intake.
If you to up the performance, raise the compression, raise the cam duration, and air flow. Just make sure the parts are all supposed to work at the same rpm range.
If money is no problem then by all means skip the effort and buy some of the CHI alum heads and intake.
If you to up the performance, raise the compression, raise the cam duration, and air flow. Just make sure the parts are all supposed to work at the same rpm range.
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