Intake manifold
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Intake manifold
Hello all I'm looking for some advice on which intake manifold to purchase. I have an edelbrock performer but I realized I need to port my intake to match my ported heads.(I bought the intake first) so I have a 79 l82 car with a 383 stroker installed and a 268h comp cam. Any ideas on what intake would be best for max power? I don't want to waste the money porting the base model edelbrock this is why I want a better intake to port. Thanks in advance.
Drifting
Joined: Mar 2011
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From: PA
You are probably talking more about gasket matching than porting. What is the rpm range of your cam ? That will tell you which intake you need. What rpm does it max out at ? If this is a street driven car only I am sure you would be better off with a dual plane that is from idle to as high as you need....not a racing manifold. You can easily gasket match the intake to your heads at home with simple tools.
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The cams range is from 1500-5500rpm. I do need porting the intake port on the cylinder head is about 1/4inch larger in length than the intake manifolds ports. I have the larger race port intake gasket but it would be a waste to use the regular intake and not take advantage of the cylinder head porting.
Drifting
Joined: Mar 2011
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From: PA
You should be able to line up the gaskets and mark the intake and use simple grinding tools to enlarge the ports.....that is if there is enuf meat on the flange.
Isn't 1500 to 5500 edelbrock performer range.....or is that the performer RPM ?
Isn't 1500 to 5500 edelbrock performer range.....or is that the performer RPM ?
Le Mans Master
Joined: Sep 2001
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From: Unreconstructed, South Carolina
tell us exactly which head you have? ... model, p/n & mfg?
1/4" more height (taller port) is a lot
imho ... intake port-gasket matching for a 268 cammed street 383 is an excercise in futility.
1/4" more height (taller port) is a lot
imho ... intake port-gasket matching for a 268 cammed street 383 is an excercise in futility.
Drifting
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From: PA
Maybe so but there is nothing wrong with cleaning up the raw edelbrock casting a little to match the gasket. Even if it just makes you feel better. Even the water port can be smoothed a little.
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The heads are pro comp 210cc I believe the part number is 3003A. They were fully CnCed by my local shop. The shop offered to port match my intake I just need help picking one out. I like the air gap performer for a bit more power
Last edited by socal79; Jul 25, 2011 at 10:50 PM.
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From: FL
Go with the RPM Air Gap (will need a drop base air cleaner). Same height as an RPM so might as well get the Air Gap benefits.
Also, ignore Edelbrocks rpm recommendations. Those are based on a 350 engine size. Same with most cam recommendations. The 268 is a mild cam in a 350. You could easily step up to a 280 in a 383. Cubic inches will make the cam act smaller.
Also, ignore Edelbrocks rpm recommendations. Those are based on a 350 engine size. Same with most cam recommendations. The 268 is a mild cam in a 350. You could easily step up to a 280 in a 383. Cubic inches will make the cam act smaller.
Le Mans Master
Joined: Sep 2004
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From: Livonia MI
The Edelbrock Perfomer dual plane your running is a very good choice for the street rpm's you described, as makes torque everywhere. Port/gasket matching really isnt a big deal with a basic Dremel tool. As mentioned, really not wanting to smooth the intake ports in to far on a street motor, as the rough casting actually helps with fuel atomization. Not a bad idea having some JB Weld 2 part epoxy handy when doing this work, if the Dremel gets loose, scuffing up the intake flange surface.
Drifting
Joined: Mar 2011
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From: PA
The Edelbrock Perfomer dual plane your running is a very good choice for the street rpm's you described, as makes torque everywhere. Port/gasket matching really isnt a big deal with a basic Dremel tool. As mentioned, really not wanting to smooth the intake ports in to far on a street motor, as the rough casting actually helps with fuel atomization. Not a bad idea having some JB Weld 2 part epoxy handy when doing this work, if the Dremel gets loose, scuffing up the intake flange surface.
