69CutlassAlex

I have a 455 with .472 Edelbrock Cam and lifters, 750 cfm Edelbrock carb, headers and a few other small upgrades and soon a set of C heads with a lot of performance mods. Which intake would be a better choice. I already have the Performer. Any experiences?

oldcutlass

The Performer is your best bet compared to the Torker single plane. The Torker will not work with Ram Air setups according to the Edelbrock sight.

chadman

For your application I would run the performer especially since you already have it. If you were running more cam like around 230 or more at .050 then I would run the Torker.

69CutlassAlex

I am looking to put in a bigger cam. Looking at either .49 or .51 lift. The Edelbrock performer RPM range is Idle-5500. Any cam that is bigger than the .472 which I already have has an RPM Start Range of 1500 or higher. I would assume that putting a bigger cam with a higher RPM range with my current Edelbrock performer would be a bad idea? Thanks all

oldcutlass

Is your engine going to run at 6500+ rpm? If not then the Performer is the manifold for you.

69CutlassAlex

Even if I put a bigger cam in? My main concern is the initial overlap. Having a idle-5500 intake and a 1500-6500 cam. Is that slight offset bad? Don't you typically want a match RPM Operating range?

oldcutlass

It's a package, here is a good article but read the whole thing:

http://www.enginelabs.com/engine-tec...or-dual-plane/

chadman

For what you are doing there will not be an appreciable difference. If you were looking for better times at the drag strip I would go with the Torker but for a mild street car you won't notice a "seat of the pants" difference. You said you are looking to change cams but only listed possible lift numbers. It's more the duration @ .050 and the LSA that determine the "attitude" so to speak of the cam much more so than the lift.

69CutlassAlex

ok thanks, Currently Ive got so much torque I don't know what to do with, so im looking to up my midrange performance. My Current Cam is(duration/lift/lobeseperation)214° / 224°.472" / .496"112°
I also read that the camshaft and the Intake don't have to be exactly matched when it comes to RPM operation range but its good to have it within 500-1000 RPMs.