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Old Dec 2, 2019 | 12:16 PM
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Default c3 intake manifolds

I am possibly looking to add an aftermarket intake to my 70 small block, I know that the height is limited, what have folks found that will fit under the hood ?
Thanks for any help !
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Old Dec 2, 2019 | 02:07 PM
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Dual = Edelbrock 2701
Single = G-Team 7530
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Old Dec 2, 2019 | 03:54 PM
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I have the same question, except for big blocks and the big block hood.
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Old Dec 2, 2019 | 03:56 PM
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Originally Posted by fantasygoat
I have the same question, except for big blocks and the big block hood.
If you have rectangle port heads... GM #3963569 fits under the stock hood. From my understanding this is a NOS LS6 intake.
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Old Dec 2, 2019 | 04:36 PM
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If you are not upgrading the cylinder heads and cam to accept much more flow from the intake, you do not NEED a different intake. Otherwise, read post #2.

Last edited by 7T1vette; Dec 2, 2019 at 04:37 PM.
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Old Dec 5, 2019 | 09:31 AM
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Originally Posted by 7T1vette
If you are not upgrading the cylinder heads and cam to accept much more flow from the intake, you do not NEED a different intake. Otherwise, read post #2.
But a new aluminum intake sure looks a lot nicer than the old painted manifold. Make sure to use Felpro gaskits.T

Last edited by terrys6t8roadster; Dec 5, 2019 at 09:32 AM.
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Old Dec 5, 2019 | 10:22 AM
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Without starting another debate about horsepower wars between Intakes, the question back to you is:
Are you willing to incorporate a "drop-base" air cleaner? If not, then the Intake with the lowest carb pad is the Eddy 2101. Maybe two notches better than stock.
Other options are using a 2.5" - 2.75" H. filter cartridge instead of 3".

For comparison of Intake pad heights, go to Edelbrocks web site and plug into SBC.

If you are unsure about purchasing new, there are a few used Intakes on EBay. Study the sellers pictures real close.
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Old Dec 5, 2019 | 11:55 AM
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As stated above.
If you go to Edelbrocks website, you will see that most of their intakes "will not fit Corvette", however talking with their tech services people they will tell you that is based on the fact that they measure using the OEM air filter.
If you use a drop base air filter, which is very common by Corvette owners, you can fit most (within reason) aftermarket intakes under the stock hood.
When picking a new intake, it is like any other performance modification you make and they are rated to work within a certain rpm range.
So figure out where you want to make a little more power and go from there.
Adding a good aftermarket intake, new carb or having the quadrajet rebuilt by someone like Lars, and adding a set of headers will give you some noticeable performance gains.
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Old Dec 5, 2019 | 08:27 PM
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Why not find a later model aluminum factory Q jet intake. Usually can find on ebay for $80 .
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Old Dec 6, 2019 | 09:48 AM
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Like the weiand DP
Team G works great, the runners are tall/narrow so you have decent airspeed.
. Decent overall tq pulls well up top.


There is a torker 2...it really needs runner extensions. PUlls very hard from 5 on up but a little lazy downstairs

Last edited by cv67; Dec 10, 2019 at 12:10 AM.
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Old Dec 9, 2019 | 12:42 PM
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Looks like there are at least 2 from edelbrock that should work the 2101 is listed at a height of 4.050 inches tall and the 2701 is listed at 4.270 inches tall...
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Old Dec 9, 2019 | 01:18 PM
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Weiand street warrior is slightly lower (1/4") than Edelbrock 2701 Performer EPS. Every little bit counts when it comes to hood clearance on early C3's
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Old Dec 10, 2019 | 12:47 PM
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Originally Posted by Haggisbash
Weiand street warrior is slightly lower (1/4") than Edelbrock 2701 Performer EPS. Every little bit counts when it comes to hood clearance on early C3's
Agree……



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Old Dec 10, 2019 | 07:59 PM
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Originally Posted by wilcar
Why not find a later model aluminum factory Q jet intake. Usually can find on ebay for $80 .
Because it's garbage too.
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Old Dec 11, 2019 | 02:00 AM
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i have a edelbrock 2101 on my '72 with the stock air cleaner
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Old Dec 12, 2019 | 08:03 AM
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loosely ball up aluminum foil. put a couple of pieces on top of your air filter. close hood. now you see how much more room you have.
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Old Dec 12, 2019 | 01:39 PM
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Edelbrock 2101. Sure it will not do magic to a stock engine but what the heck it is a cheap and simple upgrade, it looks nice and you loose a few pounds of weight.
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Old Dec 12, 2019 | 01:51 PM
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Weiand Street Warrior part # 8120WND also.

If the engine is still mostly stock, worrying which of these intakes will gains that extra 3 horsepower isn't really necessary. Use the one that looks the best to you.

Edelbrock's 2101 and 2701 consistently look good. Every now and again, the Street Warrior has an ugly casting area around where the name is cast into the top of the #1 intake runner. No matter which one you choose inspect them for quality and looks before installing one.
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Old Dec 13, 2019 | 08:19 PM
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Weiand 8004 was succeeded by 8120 ... 8004 reputed to perform a bit better than E 2101

older height comparo
Intake Manifold, OE Cast Iron L-48 F = 2.69” R = 4.375”
Intake Manifold, Weiand ActionPlus p/n 8004 F = 3.50” R = 4”
Intake Manifold, Edelbrock Performer p/n 2101 F = 3.50” R = 4.60"
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Old Dec 13, 2019 | 08:38 PM
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look up past thread, I posted it gives all the manifolds and heights _ HP.

Attached Files
File Type: docx
manifold heighs.docx (1.01 MB, 119 views)

Last edited by BLUE1972; Dec 13, 2019 at 08:43 PM.
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