Performer intake
Thread Starter
Racer
Joined: Sep 2012
Posts: 420
Likes: 0
Performer intake
74 corvette. Any improvements or benefits of installing a elderbrock performer intake I see lots of people talking about the and having them on
Are they worth it over the stock intake ? Their pretty cheap
Are they worth it over the stock intake ? Their pretty cheap
Race Director
Joined: Aug 2004
Posts: 10,628
Likes: 132
From: Duvall, WA
From a performance standpoint, they are no worse than the stock intake. The weight savings was significant enough to make it a no-brainer for me. I'm trying to shave as much weight as reasonably possible. They cost less than a decent meal out, so I say go for it.
Thread Starter
Racer
Joined: Sep 2012
Posts: 420
Likes: 0
Are they pretty straight forward to install ? Any suggestions on the specific one I should use ? Will I have to get my carb retuned ? And I see there's some without the egr valve and with any difference if I take out the egr
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
If you have a Quadrajet carburetor, (which I'm assuming you do) look for the number 2101. That's the Performer intake with the spread bore carb flange. If you decide to keep your EGR system, 3701 is the number to look for.
It is generally accepted that a Performer intake is one small step up from the stock intake. Maybe 5-10 horsepower, and around 25 lbs. less weight. Headers and a free-flowing exhaust system will help the intake reach it's full potential.
Changing an intake manifold on a small block chevy can be a pretty involved process compared to some other engines. The distributor goes through the intake, so you have to deal with that, and there is a coolant passage that runs through the intake, so you have to drain the coolant. Other than that, it's a pretty straightforward process of unbolting the old one, and bolting the new one on. Including, of course, all the associated cleaning of gasket surfaces and such.
If you want some help deciding whether or not to keep the EGR, look elsewhere, I don't know much about it at all. However, I will say that used 2101 manifolds are much more plentiful than the 3701.
Scott
It is generally accepted that a Performer intake is one small step up from the stock intake. Maybe 5-10 horsepower, and around 25 lbs. less weight. Headers and a free-flowing exhaust system will help the intake reach it's full potential.
Changing an intake manifold on a small block chevy can be a pretty involved process compared to some other engines. The distributor goes through the intake, so you have to deal with that, and there is a coolant passage that runs through the intake, so you have to drain the coolant. Other than that, it's a pretty straightforward process of unbolting the old one, and bolting the new one on. Including, of course, all the associated cleaning of gasket surfaces and such.
If you want some help deciding whether or not to keep the EGR, look elsewhere, I don't know much about it at all. However, I will say that used 2101 manifolds are much more plentiful than the 3701.
Scott
Thread Starter
Racer
Joined: Sep 2012
Posts: 420
Likes: 0
Thanks great info I might make this my winter project as I don't wanna drain the coolant again as I just replaced the water pump. I do have the stock quadrajet and will I need to retune it after the intake ? Also can anyone shine some light on the egr ? With the 2101 I believe it eliminates it
Race Director
Joined: Jan 2000
Posts: 12,399
Likes: 247
From: San Jose CA
The 2101 removes EGR but still has provisions for a hot air choke.
You will not likely feel the weight savings much; I'd only do this if the intake is coming off for whatever reason.
I doubt there's any power difference between an iron intake and the Performer, especially with a bone stock L-48.
You will not likely feel the weight savings much; I'd only do this if the intake is coming off for whatever reason.
I doubt there's any power difference between an iron intake and the Performer, especially with a bone stock L-48.
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
BE CAREFUL!!!! There are often issues that arise when changing an intake from the stock design to an aftermarket design. Some of these "issues" can deal with having the EGR able to be installed...so getting the intake with the mounting provision is needed....that is if you care to keep it emissions correct. I know many people on this forum do not care and do "whatever"...so you can make that call on what you choose to do. For me...I have to keep the emissions intact due to the LAW.
Also it has to do with the height. You might run into an issue when you install the carb...air cleaner and rubber seal.that you might hit the underside of the hood....which also effects your crankcase breather tube to the air cleaner.
Also the divorced choke may give you some issues...the mounting plate for the Edelbrock can be different than the stock mounting design.
Remember than 1/2" increase in mounting height of the carb can all the difference if it works as designed or not at all.
DUB
Also it has to do with the height. You might run into an issue when you install the carb...air cleaner and rubber seal.that you might hit the underside of the hood....which also effects your crankcase breather tube to the air cleaner.
Also the divorced choke may give you some issues...the mounting plate for the Edelbrock can be different than the stock mounting design.
Remember than 1/2" increase in mounting height of the carb can all the difference if it works as designed or not at all.
DUB
Burning Brakes
Joined: Nov 2004
Posts: 1,193
Likes: 176
From: Hillsborough NC
BE CAREFUL!!!! There are often issues that arise when changing an intake from the stock design to an aftermarket design. Some of these "issues" can deal with having the EGR able to be installed...so getting the intake with the mounting provision is needed....that is if you care to keep it emissions correct. I know many people on this forum do not care and do "whatever"...so you can make that call on what you choose to do. For me...I have to keep the emissions intact due to the LAW.
Also it has to do with the height. You might run into an issue when you install the carb...air cleaner and rubber seal.that you might hit the underside of the hood....which also effects your crankcase breather tube to the air cleaner.
Also the divorced choke may give you some issues...the mounting plate for the Edelbrock can be different than the stock mounting design.
Remember than 1/2" increase in mounting height of the carb can all the difference if it works as designed or not at all.
DUB
Also it has to do with the height. You might run into an issue when you install the carb...air cleaner and rubber seal.that you might hit the underside of the hood....which also effects your crankcase breather tube to the air cleaner.
Also the divorced choke may give you some issues...the mounting plate for the Edelbrock can be different than the stock mounting design.
Remember than 1/2" increase in mounting height of the carb can all the difference if it works as designed or not at all.
DUB
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Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
Here is a link to a test that Chevy High Performance did back in 1999, using a Goodwrench engine, which is pretty much identical to our L48s. The first dyno test is a stock engine, the second test is with a set of headers added, and the third test is with the addition of a Performer intake manifold. The numbers aren't all that impressive, but they are there.
http://www.rustpuppy.org/chp/goodwrench1-2.html
Scott
http://www.rustpuppy.org/chp/goodwrench1-2.html
Scott
Last edited by scottyp99; May 24, 2013 at 10:52 PM.
Drifting
Joined: Mar 2011
Posts: 1,886
Likes: 9
The 2101 is maybe 1/4" taller than the stock iron manifold. You will need a slightly longer choke link. Edelbrock sells it. The rubber gasket on top of the air cleaner will just squash down a bit to accommodate the extra height. And aluminum is 1/3 the weight of cast iron. Since aluminum conducts heat so much better than cast iron, I removed the heat riser, and installed the spacer there.
In New Jersey, they just use a tailpipe sniffer on the old cars for emissions inspections. The inspection station guys do not open the hood. Not that they would know how. So I never missed the EGR.
In New Jersey, they just use a tailpipe sniffer on the old cars for emissions inspections. The inspection station guys do not open the hood. Not that they would know how. So I never missed the EGR.
Last edited by gcusmano74; May 24, 2013 at 11:39 PM.
Burning Brakes
Joined: Apr 2013
Posts: 926
Likes: 2
From: Castle Rock CO
There is a very good breathing on this intake over the stock intake. They do work best with a matching mild cam and dual exhaust systems and can provide about a 10% to 20% increase in horse power over the stock intake. Depending on your factory Carb which most are rated at 650 CFM this will intake fuel at
Street Carb CFM :
447.63
Racing Carb CFM :
579.28
Street Carb CFM :
447.63
Racing Carb CFM :
579.28