Intake Manifold/Carburetor
Burning Brakes
Joined: Jul 2015
Posts: 823
Likes: 57
From: Austin TX
If the goal is performance, you'll have to consider modifying the hood or storing it away and buying a high-rise replacement. I only use low profile, dual-plane intakes (spread bore) when low end torque and fuel economy are the primary concerns. For best mid-range torque coupled with good horsepower to 6K-7K, you need a good single-plane square bore and a Holley. As a compromise if you must keep the stock hood, a square bore dual plane and Holley will kick it up a notch.
Last edited by 454Luvr; Mar 9, 2016 at 11:29 AM.
Melting Slicks
Joined: Jun 2003
Posts: 2,802
Likes: 241
From: Niles, MI
As others have stated, the best combo is an Edelbrock Performer and a Quadrajet carb given the restriction of "still take my stock air cleaner and will fit under the stock hood of a 69 Vette 350/350". In particular I would recommend a Quadrajet M4M tuned by Lars and converted to an electric choke. Shark Racer gives an excellent discription here. You'll need to run the later model fuel line and a wire for the electric choke. Other than that , its bolt on and go.
That's what I'm running with a Weiand Action +Plus PN 8004 intake manifold, stock hood and air cleaner on a '73. The car has never performed so well; almost like fuel injection.
Some pics of mine after a Lars rebuild.
That's what I'm running with a Weiand Action +Plus PN 8004 intake manifold, stock hood and air cleaner on a '73. The car has never performed so well; almost like fuel injection.
Some pics of mine after a Lars rebuild.
Advanced
Joined: Nov 2009
Posts: 98
Likes: 17
From: TN
Racer
Joined: Aug 2014
Posts: 479
Likes: 93
From: Tennessee
I contacted Lars about 4 weeks ago and he informed he wasn't taking on any rebuilds at this time so I then bought a complete rebuild kit form Cliff's High Performance Quadrajets along with his book and took it on myself. It's not that hard to do especially with Cliff's book to guide you. That's if you do need a carb rebuild.
Last edited by ykf7b0; Mar 11, 2016 at 07:40 PM.
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8th Gear
Joined: Jan 2013
Posts: 8
Likes: 1
Summit carb/manifold comb stage 2 part number CMB-03-0206 Carb is a square bore remake for Summit its a Holley 4110 600cfm $492.30 plus s/h I put this on my 82 with stock hood and it fits. It comes with a 2.5in air filter.
Last edited by Larry Clark; Mar 13, 2016 at 01:48 AM.
Drifting
Joined: Oct 2005
Posts: 1,615
Likes: 150
From: Forth Worth TX
I suggest making a dyno run as the car sits today and then another after the intake swap. You'll most likely be disappointed.
A higher-rise manifold (aka LT-1) would help, but your stock hood requirements won't allow it.
Tech Contributor
Joined: Aug 1999
Posts: 14,380
Likes: 6,391
From: At my Bar drinking and wrenching in Lafayette Colorado
Lars