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Old 02-12-2012, 04:43 AM
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Are all aftermarket intakes the same?

I need to choose an intake for my SBC (gen1 with vortec heads and q-jet). This is for a street truck, so I am thinking a low rise dual plane is what I need. It seems that you can either have an idle-5,500 or 1,500-6,500 RPM unit. There seems to be no other differentiation or ratings between one brand and model to the next. So should I find the cheapest one in the finish I like and call it good? Would a GM performance unit be as good as an aftermarket unit? Thanks for any advice.

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Old 02-12-2012, 06:32 AM
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I put an Elderbrock Air Gap in my street truck,works pretty good runnin a holley 750 double pumper.
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Old 02-12-2012, 06:35 AM
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To answer the question in one word,,,No,,,they are not all the same. To get the most out of the vortec heads the general consensus is to use the edelbrock RPM type of high rise intake. Be it that you want to bolt on the Qjet you are SOL when it comes to this type of intake for a spread bore. You could use this intake and then a carb adapter to make the Qjet work. Not really a good practice and not often recommended.

GM makes their version which is really costly I am not sure about the performance, but it should be very comparable to other low rise dual planes:

http://www.summitracing.com/parts/NAL-12496820/

Edelbrock makes theirs and is a better price, personally I would go for this one to save a few bucks and eddy makes a good product:

http://www.summitracing.com/parts/EDL-2116/

For a a stout street machine it should serve the purpose IMO.
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Old 02-12-2012, 12:49 PM
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Yea, I'm with Custom10 on this, lets see do I pay $320 or $179 for an intake. In reality are you going to be running around town @ 6500 or do you want the low end grunt to get that truck moving?
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Old 02-12-2012, 06:00 PM
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They only requirements that I would have is dual plane and american made major brands. I have experienced fitting issuses with nonmajor brands. Not worth the trouble.
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Old 02-12-2012, 11:21 PM
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Intake manifolds

Unless you have a big cam and the heads have alot of port work on them I would vote for the EDL- 2116 also. The Edelbrock Performer RPM and Rpm AIR Gap is a square-bore intake that you would have to buy another carburetor to match.
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Old 02-13-2012, 10:21 AM
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I apoligize if I'm hijacking the thread but is there room in the airgap to run a loop of heater hose under the plenum to help with cold weather performance?
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Old 02-13-2012, 01:12 PM
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I have a similar buildup to yours. I am just about to start assembly as soon as the UPS guy comes in the next few days with the remaining parts. I just got a GM Bowtie intake for the Vortec heads from a guy on Ebay for $200. I think there was one on there for a spread bore carb too. It's a low rise dual plane intake for a Gen 1 style engine with L93 heads. Check it out, I thought it was a great deal. I had the Edelbrock performer before I with the other motor which comes in both carb patterns, I was happy with it.
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Old 02-13-2012, 01:24 PM
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Quote:
Originally Posted by Silver Surfer
I need to choose an intake for my SBC (gen1 with vortec heads and q-jet). This is for a street truck, so I am thinking a low rise dual plane is what I need. It seems that you can either have an idle-5,500 or 1,500-6,500 RPM unit. There seems to be no other differentiation or ratings between one brand and model to the next. So should I find the cheapest one in the finish I like and call it good? Would a GM performance unit be as good as an aftermarket unit? Thanks for any advice.
X whatever it is No they are not all the same.



Cole
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Old 02-14-2012, 07:18 AM
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Agreed, Edelbrock Performer Air Gap. The "smaller" dual plane will enhance low-speed and mid-range performance, which is exactly what a truck needs. Performer RPM is very good for mid-range and high-end power, but a bit counter-productive "down low".

Edelbrock wears engines out testing. Most others simply make theirs LOOK like Edelbrocks. This is of course, not true with high-end race intakes like the Dart or Brodix, but those aren't suited to the high-torque/low speed combo.

FWIW

Jim
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