Alu intake under SB hood
Thread Starter
Instructor
Joined: Feb 2007
Posts: 163
Likes: 28
From: Sweden
Alu intake under SB hood
I have just bought a C3 -69 L46 and I'm planning for the upgrades. Does anyone know if there is a performance alu intake with the same height as stock iron intake? It looks like the aftermarket intakes brings problem with hood clearance.
Håkan
Håkan
Burning Brakes
Joined: Mar 2016
Posts: 1,008
Likes: 163
The old stand by is the Edelbrock Performer 2101
Melting Slicks
Joined: Jun 2003
Posts: 2,802
Likes: 241
From: Niles, MI
Melting Slicks
Joined: Sep 2006
Posts: 2,821
Likes: 470
From: Wichita Kansas
If one replaces their stock intake with one of these 'performers', what exactly does that do for you, assuming you change nothing else. Just curious, always looking for a quick enhancer. Thanks
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
A little bit better flow, but mostly putting the front end on a diet.
Last edited by HeadsU.P.; Oct 31, 2017 at 05:04 PM.
Pro
Joined: May 2016
Posts: 708
Likes: 150
From: Minnesota
Weiand Street Warrior
I am running a Weiand Street Warrior on my 1970 L46 after rebuilding with a roller and aluminum heads. I've been an Edelbrock guy for life pretty much, but chose this one as it performed slightly better than the Performer on a Hot Rod comparison of 23 different dual plane intakes, and had the shortest carb height out of all the manifolds. I am running the original (rebuilt and tuned) Quadrajet and original air cleaner, along with 1/2" of spacers under the car, still fits nicely under my hood. This is also an idle-5500rpm intake, same as the Performer, and the motor is definitely done before 6000 RPM with the Howards roller, also designed for 1600-5400rpm.
I've been really happy with my set-up and will be going to a deeper gear over the winter to snap it up even more.
I've been really happy with my set-up and will be going to a deeper gear over the winter to snap it up even more.
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
Another option is to use a 2.5" > 2.7" air filter, thereby gaining a half inch or so.
I found two: NAPA 14" dia, 2 + 5/8 tall #6037
Fram 14" dia, 2 + 5/8 tall #CA3648
Someone has a 2 + 1/2" tall
Several have a 2" filter.
Last edited by HeadsU.P.; Oct 31, 2017 at 05:21 PM.
Thread Starter
Instructor
Joined: Feb 2007
Posts: 163
Likes: 28
From: Sweden
I will also change to headers, probably Flowtech, they will fit without modification with a Borgeson steering box, as far as I understand.
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Le Mans Master
Joined: Oct 2007
Posts: 7,462
Likes: 985
From: RI, Now Franklin/Nashville TN
The Aluminum L-82 intake is the same as the Edlebrock Performer and can be sourced cheap...there are lots of used ones that can be cleaned up easily and save you lots of money over the edlelbrock performer. Intakes alone will do very little for your motor if the engine is stock or lightly modified and you intend to keep the revs below 6,000 RPM. The best gain you can hope for is 5- 7 hp over the stock manifold on stockish type engines which you will not even notice.
My L-82 355 with AFR 180 64CC heads, Howard's roller cam (.525/.525 lift, duration 219/225,LSA 110 operating range 1,500-5,600 RPM) and 10.2:1 compression pulls hard to 6,000 RPM with big mid range range torque from 3,000-6,000 RPM. I also have Long Tube Headers of 1 3/4 inches into 2.5 inch duals. I rarely rev the motor beyond 5,600 RPM which is the reason I kept the OEM L-82 aluminum intake and was advised the same by the expert engine builder who did the bottom end of the motor. His comment was with my cam and the 180 AFR's, there was no reason to look at other intakes considering I was looking for great mid range torque with strong HP below 6,000 RPM.
My L-82 355 with AFR 180 64CC heads, Howard's roller cam (.525/.525 lift, duration 219/225,LSA 110 operating range 1,500-5,600 RPM) and 10.2:1 compression pulls hard to 6,000 RPM with big mid range range torque from 3,000-6,000 RPM. I also have Long Tube Headers of 1 3/4 inches into 2.5 inch duals. I rarely rev the motor beyond 5,600 RPM which is the reason I kept the OEM L-82 aluminum intake and was advised the same by the expert engine builder who did the bottom end of the motor. His comment was with my cam and the 180 AFR's, there was no reason to look at other intakes considering I was looking for great mid range torque with strong HP below 6,000 RPM.
Last edited by jb78L-82; Oct 31, 2017 at 07:48 PM.
Melting Slicks
Joined: Apr 2006
Posts: 2,331
Likes: 61
From: Sunnyvale CA
That's exactly what I suggested to someone in the C2 Forum who was interested primarily in the look of an aluminum manifold!
Last edited by SI67; Nov 1, 2017 at 03:40 PM.
Team Owner
Joined: Sep 2002
Posts: 38,373
Likes: 2,087
From: California
Some of us have part numbers memorized and could tell at a glance. This guy has a lot of choices that will fit, but the L-82 should be out there for cheap. I hate to advertise for the crooks at Edlebrock, so Weiand is a good Company. There dual plane Sleuths are pretty trick, but I don't know the height on them.
Le Mans Master
Joined: Oct 2010
Posts: 6,945
Likes: 851
From: melbourne florida
2023 C3 of the Year Finalist - Modified
The L-82 intake and the performer are not the same. Set them next to each other and the difference is obvious. There is a little difference performance wise untill you make other changes then the performer picks up a bit more. Look in the plenum of either of them. A blind man can see the difference.
Le Mans Master
Joined: Oct 2007
Posts: 7,462
Likes: 985
From: RI, Now Franklin/Nashville TN
Either way, I would not use an Edelbrock 2101 over an aluminum GM L-82 intake....there is no performance difference....The Edlebrock RPM is different and offers maybe a 5-7 HP gain over the L-82 intake
Le Mans Master
Joined: Oct 2010
Posts: 6,945
Likes: 851
From: melbourne florida
2023 C3 of the Year Finalist - Modified
I think with better heads like you have and hedders you would find more power than that. An RPM air gap would give you even.more.
Not trying to argue the point. But saying the two are the same is factually inaccurate.
Not trying to argue the point. But saying the two are the same is factually inaccurate.
Le Mans Master
Joined: Oct 2007
Posts: 7,462
Likes: 985
From: RI, Now Franklin/Nashville TN
You need to read this:
https://www.corvetteforum.com/forums...performer.html
and this for people who switched to an Edelbrock performer 2101:
https://www.corvetteforum.com/forums...performer.html
Some say yes others say no difference. For the time, effort, and money, I would NOT choose the 2101 over the L-82 PLUS my builder who knows more about this than you or I said NOT to bother with a sub 6,000 RPM motor like mine. I went with the expert and could not be happier with the power of my motor....
https://www.corvetteforum.com/forums...performer.html
and this for people who switched to an Edelbrock performer 2101:
https://www.corvetteforum.com/forums...performer.html
Some say yes others say no difference. For the time, effort, and money, I would NOT choose the 2101 over the L-82 PLUS my builder who knows more about this than you or I said NOT to bother with a sub 6,000 RPM motor like mine. I went with the expert and could not be happier with the power of my motor....
Last edited by jb78L-82; Nov 1, 2017 at 07:14 PM.
Race Director
Joined: Mar 2017
Posts: 11,970
Likes: 4,521
From: Virginia
The ZZ4 (or ZZ6) takeoff might worth looking at. Available on eBay, it is one of the few with provisions for EGR and choke heater tubes. Plus it has the firing order and a Chevy bowtie on it, so it looks as close to stock as anything else you are likely to find.