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  1. 6

    How many CFM for my 340?

    O.K., I know about the math calculations for CFM, that's why when I read 750 would work on a 340 had me questioning if it was too much CFM, but the concenus has been it works. That all depends on it's use. And after rebuilding an Edelbrock 1407 and replacing the 1405 (which I just started...
  2. 6

    How many CFM for my 340?

    I'm running only 60 PSI right now (25 PSI is minimum) and most of the lift you see is from the 6 leaf springs and slightly bigger rear shakels. Although, when I removed the old shocks, I noticed the right side upper shock bolt was loose to the body. After assembly it was still loose. Later I...
  3. 6

    How many CFM for my 340?

    Thanks for all the interesting replies and for the nice comments on the car. The car still needs more work, I just need the time. Anyway, the Edelbrock 1407, 750 CFM carb goes on tomorrow. And it goes to a car show Saturday. Right now we're having great muscle car weather And for 67yelodart...
  4. 6

    How many CFM for my 340?

    Thanks for the reply...... The 650 CFM was a mental typo. Thanks for correcting me. The 1405 Edelbrock is a 600 CFM. I'm planning to put a 1407 (750 CFM) on the Edelbrock Performer RPM, which I believe is a dual plane intake, but a thermoquad (spread bore) won't fit that manifold without some...
  5. 6

    How many CFM for my 340?

    My 67 Dart 340 4 speed is going to get carb replacement. The car has a 6 pack style air scoop on the hood that's got a 16" round cut out for my 14" K&N air filter. Right now the air cleaner is pushed up into air comming in by 2 spacers of about 3" to 4" above the carb. I have a 650 CFM Edelbrock...
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