aluminum intake performance question
Thread Starter
Burning Brakes
Joined: Mar 2006
Posts: 1,036
Likes: 2
From: Huntingburg Indiana
aluminum intake performance question
My brother and I have both installed aluminum intakes on our cars and trucks when we went to a different style carburetor. I was thinking of putting one on my 71. It was a 270 horse 350. I recently rebuilt it with a .030 overbore, domed pistons giving it 9.8:1, lunati voodoo cam, and a mallory electronic conversion with a hotter coil. I am using a newly restored q-jet and exhaust manifolds. What kind of an increase would I see by using a stock height holley or edelbrock intake. Anything taller won't fit under the hood. I know the companies say they make more power, but I was wondering if it was worth it. Thanks.
Safety Car
Joined: Aug 2001
Posts: 4,883
Likes: 11
From: North Easton Mass
I replaced the stock manifold and carb on a base engine 72 with an Edelbrock intake and Holley 750 carb and the engine definitely made more torque. After the change my clutch started to slip when I nailed it!
Rick B.
Rick B.
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
An edelbrock performer is very close to stock height and can use a
Q-jet or holley its drilled for both. I would guess about 12 to 15 hp
over the old cast iron manifold and around a twenty pound loss
of weight for your car.
Q-jet or holley its drilled for both. I would guess about 12 to 15 hp
over the old cast iron manifold and around a twenty pound loss
of weight for your car.
Thread Starter
Burning Brakes
Joined: Mar 2006
Posts: 1,036
Likes: 2
From: Huntingburg Indiana
Thanks for the help. I thought the low rise aftermarket intakes were the same height as stock. Is this going to fit? I am using a q-jet with the dual snorkel air cleaner and small block hood. Thanks.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
Originally Posted by bondoboy
Thanks for the help. I thought the low rise aftermarket intakes were the same height as stock. Is this going to fit? I am using a q-jet with the dual snorkel air cleaner and small block hood. Thanks.
Drifting
Joined: Aug 2006
Posts: 1,694
Likes: 0
From: Oregon
I went with the Edelbrock 2701 intake, 1406 carb and 1221 drop base air cleaner. It all fits under the stock hood. Also installed a new G.M. performance HEI.... It all tucked away very nice with the new crate motor. I gained another 100 hp over the original stock motor.. 
Yes, my Vette is even more fun to drive now. I can step on the gas and spin the tires if Im not careful. From day one, the original motor would only break them loose on gravel or a wet surface.
Yes, my Vette is even more fun to drive now. I can step on the gas and spin the tires if Im not careful. From day one, the original motor would only break them loose on gravel or a wet surface.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
Originally Posted by bondoboy
Thanks for the help. Does the weiand intake have a place for the factory choke coil? Some of them don't.
Originally Posted by 3rd_Vette
I went with the Edelbrock 2701 intake, 1406 carb and 1221 drop base air cleaner. It all fits under the stock hood. Also installed a new G.M. performance HEI.... It all tucked away very nice with the new crate motor. I gained another 100 hp over the original stock motor..
Yes, my Vette is even more fun to drive now. I can step on the gas and spin the tires if Im not careful. From day one, the original motor would only break them loose on gravel or a wet surface.
Yes, my Vette is even more fun to drive now. I can step on the gas and spin the tires if Im not careful. From day one, the original motor would only break them loose on gravel or a wet surface.
Last edited by jackson; Sep 14, 2006 at 10:58 AM.
Le Mans Master
Joined: Jan 2006
Posts: 6,506
Likes: 139
From: Butler Pa
Originally Posted by 3rd_Vette
I went with the Edelbrock 2701 intake, 1406 carb and 1221 drop base air cleaner. It all fits under the stock hood. Also installed a new G.M. performance HEI.... It all tucked away very nice with the new crate motor. I gained another 100 hp over the original stock motor..
Instructor
Joined: Oct 2005
Posts: 145
Likes: 0
From: round rock tx
Where would I get a picture of a performance intake?
"I don't know of a "stock height" Holley or Edelbrock intake. You'll likely have to make some additional changes such as a drop-base air cleaner if you go with a performance intake."
"I don't know of a "stock height" Holley or Edelbrock intake. You'll likely have to make some additional changes such as a drop-base air cleaner if you go with a performance intake."
Instructor
Joined: Oct 2005
Posts: 145
Likes: 0
From: round rock tx
forget my asking for the picture of a performance intake, I just re-read the document I was quoting. I would like very narrow air cleaner as a drop down will not let my hood close. I had to fabricate one from a standard store replacement.