ok so whats the difference in a single and dual plane intake manifold. I want a new intake manifold for my car, its a 350. any other intake suggestions. I have an edelbrock performer now, but want something different, a little new design.
http://www.summitracing.com/parts/WND-7530/ team g intake

http://www.summitracing.com/parts/EDL-7501/ rpm air gap intake

5 speed car, sock cam, full exhaust, 3:73s

 

i recommend a performer for a stock 350. a performer rpm or air gap for high performance street and victor jr or bigger for race only. i personally dont like the design of the torker intake. that weiand intake is the same as the victor jr. make sure you get the correct bolt pattern, they changed in/around 86 or 87

 

There is no change in bolt pattern. Unless you are talking vortec.

I don't think anyone is going to disagree with you on the torkerII. Designed in the 70s as a single plane that would fit under a stock hood it was always a compromise. Now a days there are dual planes that will out perform it even at higher RPMs. The Victor style single is streetable if it matches the motor.

Over all i would say port the manifold you have a bit. Maybe knock of a half inch from the plenum divider to gain a little rpm. If performance is your goal your money would be better spent on a cam swap at this point.

 

The late cast iron centerbolt heads used on the F-Bodies have a different bolt angle on the center two intake bolts .
Some aftermarket intakes come with the holes slotted to suit either app
In any case , you can elongate the holes in manifold yourself and use a washer to put one style on other

 

i believe the change in bolt pattern hes referring to is the change in the angle of the bolt. the centerbolt valve cover heads are the new kind and the perimeter bolt are the old design

 

Performer RPM will allow more flexibility for future power building.

Air-Gap looks awesome and allows even more power building later.

 

i cant see efficiently using a victor manifold on the street unless you are illegally street racing. the performer rpm is a great manifold.

 

Generally speaking, single plane intakes don't start making power til aroud 3200 rpm, single planes will make their best power from 1600 to 6000 RPM.... Single planes are for racing, dual planes for the street.

 

What on earth does efficiency have to do with swapping a bigger motor with a 4 barrel carb on it? Everything we change on these things is pretty much ruining their efficiency.
If your motor is 500hp or more you aren't going to lose much down low running a single plane over a dual.

 

its like driving around town on wrinkle wall slicks. you can do it but why? if you are driving well below your max hp/rpm range most of the time use the appropriate parts for said job. i.e not racing. if i'm city driving with 500hp i will be using a performer RPM manifold. thats why i own 2 camaros. i have one for the street and one for the strip. i would use a single plane intake on a street car with over 500hp (smallbock 355) but only if it was forced induction. thats my opinion. i dont think i would have a new Z06 for this reason. as soon as you hit 100% throttle, you'll be going dangerously fast.

 

Works for my 383 with 3.73 rear and 3K stall.

 

Also works for my 350 with 4.56 gears and a 4,000 stall lol Oh and it's not a car for illegal street racing, I take it to the track for racing but still do drive it around town.

 

Works on my 383 with a stick. And an intake doesn't wear out in a 100 miles or less like a pair of slicks on the street. Not really a good comparison.

 

why would slicks wear out after 100 miles. are you burning out the whole way? i would more likely get a flat from a thumb tack. not kidding, it happened to me.

 

If you want your car to be in a magazine you need the air-gap.
A mostly stock 350 will not feel any different with an air-gap vs a performer that has been ported and the divider modified. It may dyno different but the seat-of-the-pants dyno will be the same.
If fuel economy is important to you stick with a dual plane. If you don't like shifting often or don't want a high stall converter stick with a dual plane.
My opinion is a daily driver hydraulic camshaft engine is usually more suited to a dual plane. A solid roller camshaft is best served by single plane. If you build it to rev you might as well use the intake that works best at high rpm.
Please don't illegally street race with a dual plane intake. Remember the car that loses is more likely to get caught.
I didn't build a 500 hp motor to go "safely" fast.

 

the point was picking a the best manifold the the purpose it will be used for. i do love my victor jr on my race car. i could drive it anywhere as far the 4 gallon fuel cell will get me but i rather take my Z28.

 

think the air gap would help slightly help with preignition and maybe worth a few hp. not worth the extra cost to me.

 

Get a dual plane you'll run slower with a single plane with your current setup.

 

i have a dual plane now. Im going to wait and im going to get the edelbrock air gap intake once i get a deal on one. I have all the time in the world.

 

I just bought a used one from the 'for sale' section.

Keep your eyes open. They're out there.

 

i have just the regular performer but i think ill make more power with the rpm air gap so thats what ima shoot for.

 

You might not be kidding but you have me laughing. 100 miles might be an exaggeration but not a huge one. If i have to explain why tires made with super soft compound that you yourself claim are so thin they are punctured by a thumb tack will wear out excessively fast on the street then i might as well be talking to the wall. No doubt with your dual plane you would see 50,000 miles out of them just like a good old BFG T/A.

Adding on top of that my single plane intake isn't going to send me spinning into the ditch if the car sees rain. Or not allow me to corner at speed because i have no sidewall strength. All and all it was just a **** poor analogy. Get over it.

To the original poster its your cash and spend it on what you want. But i will say again if your real intent is to improve power and not just have the magazines number one intake sponsor's darling intake then you should be looking towards a cam swap. You still don't have a cam to match your current intake. If you can change an intake you should be able to swap a cam.

 

Ahh i see. Thanks.
After skimming a summit catalog i notice that some intakes list as pre 87 and some list for all years. I guess i should have figured this out since i have both style intakes. Performer EPS without elongated holes and Pro Products Hurricane with elongated holes and removable slugs for manifold specific use.