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I think it would run better and get better fuel mileage with a nice Thermoquad on it, but that is just me. Tiny primaries for low speed smoothness and mileage Huge secondaries for sucking in the hood.

Yep....it is a 600 cfm carb !!

See here for a picture of a 72 "trap door" air cleaner... http://www.forabodiesonly.com/mopar/showthread.php?t=141690&highlight=trap+door http://www.forabodiesonly.com/mopar/showthread.php?t=121525&highlight=trap+door See here for the "heat stove"...

3667 is rated at 570cfm.

Greazer, This is a good thread on it. It was my buddies that died a couple of years ago. It may be going up for sale in the near future. http://www.forabodiesonly.com/mopar/showthread.php?t=78465&highlight=long+ram+dart

Yep, they bolt right on. And they even fit in an A-Body. Just a little modification to the right fender and NO power brakes.

340 AVS was rated at 630 cfm. http://www.mymopar.com/forums/index.php?showtopic=2621 Post # 4 Hope this helps.

Book shows 1970 340 4 speed without EEC

Stroker, Are you saying the stock 4bbl intake flows like a sewer...and weighs about the same??

Mine ran just fine at Englishtown. Good enuff to have a chat with local police.

Rumblefish.... Does your Thermoquad try to suck your hood in like mine does???:burnout:

How long after you nail it does it fall on it's face? Instantly A couple of seconds 10 seconds

For a cheap (no cost) unsilenced air cleaner.... Remove lid Remove filter Take old fan belt and cut it Lay old fan belt on top of filter Cut old belt to same circumference as filter Tape both ends of old belt together Lay old belt in bottom of air cleaner Lay filter on top of old...

Check the accellerator pump to see if it is shooting fuel into the carb throats.

Yep that is a BBD. Chrysler used it for many years on 273 and 318s.

Thermoquad! Small primaries for idle and mileage qualities. Huge secondaries for that 'suck the hood thru the carb sound 800 cfm Chrysler did not use them for no good reason.

It sounds like the accelerator pump linkage is out of adjustment. Comes in too late.

Get one off any FI Mustang, Bronco II, F-150, Crown Vic. They are in the trunk.

How 'bout 4 4bbls on a 426 Max Wedge? Just remember that the more carbs, the less vacuum signal. That means the cylinder has to suck in air from a small space and not from a large space like a 4 bbl manifold. Works great on an all-our strip motor but runs like crap lower in the rev...

When the engine shuts off, all the fuel vapors in the hot intake manifold try to escape. That what you are seeing.

Sounds like you float is set to low......jets get uncovered during hard manuveurs and it stalls the engine. Also check the fuel pressure.

Get the Thermo rebuilt !!! You don't have to change anything and 800 cfm is nothing to sneeze at. The small primaries are great for cruising and good gas mileage and when the secondaries open up, they will try to suck your hood in.

Take the fuel line off the carb, manually fill the carb with gas, replace the line and try to start the engine. That way you will know if the fuel pump works (if the carb stays full of fuel) and you are not using the starter to prime the fuel system. Cranking a fresh motor over very long is...

The numbers on the air horn to the right of the air cleaner stud are the numbers you need. The top numbers are the carb #. The bottom are the date codes. When I blow the photo up the numbers go out of focus. You can check the numbers on the Holley website.

72SWGNR................... Your dad needs a warning sign fot that thing. "Remove all loose objects before start-up!" How far in does the hood bow at full throttle? I can just imagine how it sounds.

Finally found the picture that I was looking for. Courtesy Of Mopar Action 8/95 Ramcharger, Ever seen what happens when a newbie completely disassembles a CBX carb assembly???

I have seen 4 4BBLs on a 383. Made for full throttle running at Bonneville. Try to play with this set-up.

Fill it up with 91 and go easy on the throttle for a while and you should be ok.

Put the gas in some 5 gallon pails and set them outside and let them evaporate. It is not worth the trouble to try to salvage bad gas. If it will mess up your car's fuel system, it will do the same to your mower(don't ask me, ask my boss).

St. Louis, Mo..1972...gas war...Sunoco 260 was 24.9/gal.