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I've always had good luck with the AFB/Performer or LD-340 manifolds on my 360 for street driving. I haven't tried the actual Eddy carbs, but, as Rumble said, get the carb set up for your combo and it should be trouble free for street use.

Great pics. Thanks Bobby.

That LD340 will really wake up your 360, even in its stock configuration. I've been running on of those for 20+ years with an old Carter AFB 625 carb and it's a great combination for a mainly street drive car. That 750 will be either a Douple Pumper or a vacuum secondary - not both. If you...

QUOTE: I want a choppy big cam sound, good bottom end and midrange torque. When I cut that thermoquad open, I want this thing to go foolish. cecil, the statement above is kind of self defeating. :) Getting a "choppy big cam sound" along with "good bottom end" are opposite ends of the cam...

Well, the guys pretty well covered the tuning and timing aspects of your problem so I won't rehash that. However, is this a new or well used carb? Have you checked for vacuum leaks? If all else fails, check for a bad carb to manifold gasket or even a cracked carb base. Good luck.

As previously stated, the technology is old, but then so am I, so I've been running that same cam in my 360 for the past 17 years. :-D When the Vart goes back on the road, it will still have that cam in it. I find that in a light car, with the proper rear gears, intake/carb combo, they flat...

Actually, to have any chance of successfully choosing the proper cam, you should know the rest of your combination first. What work has been done to the engine, final compression ratio, stall speed of your torque converter, rear gear ratio selection, etc. That nasty, throaty, lopey idle is easy...

Rob, you 66 has a standard type tranny U-joint stsyem, not the old ball and trunion, so you're good to go on that one. The 904 will be a much simpler and faster fit than the 727, although that will also work with a little more effort. The pinch weld seam in the tranny tunnel needs to be...

4.0 L Jeep with the Jeep 5 speed manual behind it - 30 MPG fer sure. :) And it will still move along like a pert little doggie.

It sounds like you have the combo pretty well figured out. Watch your spring height / pressure and look for any guide interference with that cam. As for the 904, have it rebuilt with good quality parts by someone who specializes in Mopar tranny's and it should be good to go. There is not much...

I'd get rid of the slapper bars also. Mopars really don't need them due to the shorter front spring segment compared to the other makes.

Ahhh, Then I'm with daredevil. It should run like a raped ape. :)

Hey muller. Is this a strip only or street / strip car? What make, model, year of vehicle will it be in? Vehicle weight? Tranny? Rear gears? Tires? It looks like it would be a potent engine in the right vehicle, with all of the drivetrain properly matched up to it.

With that 408 in a 69 Valiant, and providing you can get some traction off the line with that much torque, you should easily run high 12's at least. I'd be surprised if your car actually weighs 3600 lbs, probably closer to 3400 or less.

19duster74, that isn't a dumb question at all. As a matter of fact, you probably just saved Rob some frustration down the road in his swap. He will need the center sump type oil pan to fit the "A" body chassis. muller, that's the spirit I love to see here at FABO, one person that 'has'...

I ran the 340 cam in a juiced up 318 in my Vart for about 10 years, and Kim, you're right, it sounded fantastic and pulled like Jack the Bear.

Like Rumble said, it's a walk in the park. But also expect the odd little touch of Murphy's Law. You can never complete a job like this without at least a quick visit from old Murph. :)

rumble called it - RPM all the way.

Have you had your combo to the strip to see exactly what times it's runing in the 1/8 or 1/4 mile, or are you like most of us and using the time tested butt dyno? :) All of what 388dart asked, plus I promise not to even mention the Holley Avenger....... Did you degree your cam or install it...

The first thing you should ask yourself is why you want to go to 2.02 valves. You are going to loose a bunch of port veocity and that translates to a very sluggish bottom end. A big cam will only make matters worse until you think you have a giant marshmallow for a gas pedal. :) You could...

With that cam, rear gear, converter, you should have a good running combination in an A Body. What compression ratio will you finally end up with? I'd suggest you get some new valve springs that are good to .500 lift to go with that cam. It's been so long since I've run the 1/4 mile, I'll let...

Your cam choice would be dependant on your final compression ratio, the ammount of work done to your heads, to a certain extent, and your rear end gear ratio. The choice of a compatible torque converter, if you're going auto tranny, would also figure into the equation. Remember that the bigger...

Atta' boy rumble! That pretty well covered those bones with some meat. :)

smythge, that Performer is just basically an aluminum stock-performance type manifold. With the engine you have, I go with either the RPM, as redfastback suggested, or the Airgap. Even an older manifold like the Edelbrock LD340 or the Holley Street Dominator would be much better for your current...

Dave, you're truly an optimist! :thumblef: I was thinking the manufacturer will probably boost the cost, since headers and OEM manifolds are so high priced already that they can probably get away with charging an astronomical price right out of the gate. And to think, I'm an optimist also...

Toby, there is a lot of information that needs to be posted before anyone can even take a half educated stab at suggesting a cam for your engine. What size is your engine; what heads and modifications; what will be the true final compression ratio; what rear gears; if using an auto tranny, what...

Jimmy boy, spend your money on something that will make horsepower, not noise. Those things are a crap shoot - some are just crap, while a few seem to work O.K.

That's why I got rid of my 273 about 1979. Even back then it was hard to find any good parts, and the need for speed just outgrew the cubic inches available. I liked the original 273, but I just love this little Vart with the 360. Move over big dog, the little Vart needs some room to flex its...

Bill, that's kind of what I thought. :) The vac. secondary is much better for an auto on the street. The other thing you might try, and it's worked for me in the past, is a 4 degree advance keyway for your cam. If memory serves me correctly, it brought my torque curve down to start about 700...

Bill, how's the bottom end with that set up? Is it kind of doggy off the line with that .509 Purple Shaft cam, or do the converter and gears get it into the RPM power curve quick enough to cover any low end sluggishness? (Is that a word?) :color: