I was wondering if y'all can help me make a decision on an intake manifold for a 318 engine with standard heads (it's going into a '69 Dart GT). The car will be a spirited daily driver that will see the rare drag race. 

First off, will the M1 Dual Plane Aluminum Intake (P4529116) fit this 318? If so, is it the better way to get the most efficient manifold horsepower without breaking the bank and fuel economy? 

Or would I be better off with an M1 Single Plane Aluminum Intake (P4452891)? OR should I just dump Mopar Performance (which I'd really don't want to do) and go for the Edelbrock 2176 Performer?

Any help would be greatly appreciated. Thanks!

> First off, will the M1 Dual Plane Aluminum Intake (P4529116) fit this 318?

I honestly don't know. I was under the impression that manifold was for the later model A engines with the magnum heads but I could be wrong.

> Or would I be better off with an M1 Single Plane Aluminum Intake (P4452891)?

Since you said this was going to be a daily driver I would definitley recommend sticking with a dual plane manifold. The single plane manifolds are better for high rpm power but the dual plane manifolds will provide better driveability and more low end torque which is a lot more useable in an everyday driving situation.

> OR should I just dump Mopar Performance (which I'd really don't want to do) and go for the Edelbrock 2176 Performer?

That's what I'm doing with my 318 which will also be a daily driver. I'm currently building a 318 for my '68 Fury and it will get the Performer manifold, cam, lifters and carb. It all comes as a matched set. I've heard nothing but good things about this setup and I'm looking forward to the power increase.

A good thing about the Edelbrock manifold is that it has a very good reputation and a much better price than the Mopar Performance part. Save your money and buy the Mopar Performance electronic ignition conversion kit. Now THAT is money well spent.

Joe

With a 318 you do not want to go with a single plane intake which the M1 is.
Edelbrocks Performer is your best choice, however Iam a big fan of the air gap, also a dual plane intake, with power from 1500-6500.
Great intake if you plan on doing any other upgrades down the road.
Professional Products also makes an air-gap intake similar to Edelbrocks and I can assure you it works very well.  

Manitoba 17. If you are using "standard" 318 heads you will have to use a "standard" 318 manifold like the Edelbrock Performer 2176. The intake ports of the 318 are way to small for the Air-Gap, Performer RPM, or the Mopar M1 Single plane.  You have to use 340 or 360 heads for these type of intakes. Go with the Edelbrock Performer 2176. It is a great street intake and the ports are 318 size.  

Joe68Fury,
 There are two M1 intakes.  One is for engines with Magnum heads with VERTICAL intake manifold bolts.  The other is for engines with LA heads and angled intake bolts.  
 One other thing, what bothered me about your post is that you want to use the Edelbrock Performer cam in your 318 in a heavy 68 Fury. Have you looked at the specs on this cam? I love Edelbrock stuff and swear by it but that cam is a joke. 204 degrees of duration at .050 and .420 lift is slap in the face of all us Mopar fans. I had a friend with a 71 Challenger with a rebuilt 360 with that exact same cam, carb, lifter, intake manifold set up. He was shocked when I could go nose to nose and sometimes beat him racing with my 125,000 mile stock 318 in a Scamp. All I had was an Edel 600,intake, dual exhaust and orange box.  My friend was so mad, after only running his new 'built' 360 a month, he put in much more aggressive cam and an M1 intake. Then he left me sitting still. We both had 3.23's. The moral of this story is the Performer cam is not much of a performer.
I don't know how you want to build your 318, but please go with a little more aggressive cam that that one. For example a stock 340 cam. You will be glad you did. Then you won't be out-run by these new mini-vans.  

Also my dad has a 68 Fury III 2DR Hardtop that I talked him into buying. He wasn't to keen on the idea at first, but now it is a daily driver and he enjoys taking it to car shows. He thought about buying the car to resell, but he fell in love with it and wants to keep it. Th 318 in the car was rebuilt bone stock.(what a shame)It runs good though and is pretty darn dependable. I think '68 Fury's are cool sleds and deserve more respect. So here's to you Mr. JOE68FuryIII owner. Hold up the C-body banner and hold it up proud.  

I have a '71 318 that I put the Mopar M1 dual plane manifold on with an Edelbrock 1406 4BBL AFB-type carb. It fit great and has provisions for most stock accessories. I couldn't be happier with this setup, it ran well right from the get go. I didn't want a single plane for a number of reasons including height. Economy seems OK ...about the same as before...and the performance is noticeably better even with the stock cam. I agree with the others, be very careful about choosing a cam, it's easy to ruin an otherwise good combination and turn your car into a poor performing gas hog!!!  Try the M1...you'll like it.