Carb quesion??? 500cfm vs 600cfm

[drobertson]

Hello and Welcome! The 1973 dodge charger I'm building has a 318 motor... and i have two edelbrock carburetors I could install. I have found a proper intake manifold, but was wondering which would give me best power. I will be installing higher compression pistons in the motor (8.5:1 will be removed, 9.5:1 will be installed) and a mild cam of sorts. The 500 has an electric choke (which I'm not a fan of), and the 600 has a manual choke. Which should I install??? Oh.... and the car was a 2bbl car with the automatic, so what can I do to connect the kickdown cable and shift linkage to the edelbrock? thanks for all the help on this awesome website.

 

[Seventy]

I would go with the 600, change the choke if you like electric...
kick down should hook up the same way..

 

[drobertson]

Yeah that's what I thought. I was just worried that 600 cfm might be too big for a 318. But that's nice to know that kickdown setup will be the same!

 

[lewtot184]

the 600 has the same size primarys as a 318 2bbl so it should work fine. the 500 has the same throttle bores as the 600 but has a more restrictive primary cluster. electric chokes aren't a big deal to disconnect. either would work.

 

[Ron 73]

a 600 isint to big, would work fine... i have a 625 on my 318 and works much better then a 500 i have tried.. More get up...

 

[rumblefish360]

Install the 500 and use for 1 year. Then install the 600 and report back. ;)

 

[Archie340]

I'm sure a 500 would work fine but I'd go with the six.

 

[drobertson]

alrighty... 600 cfm it is!

 

[Seventy]

good call, easily put the choke you want on the 600 and go to town..

 

[TetanusShot]

I'd say forget hopping up the 318, leave it a driver. Find a running 360 that you can swap in later. 360's are cheap and common.

 

[drobertson]

I'd say forget hopping up the 318, leave it a driver. Find a running 360 that you can swap in later. 360's are cheap and common.

I already have a 360.. but I just don't want to deal with the different flywheel and motor mounts.

 

[rumblefish360]

Use the 318 motor mounts, just use a nut to take up the space.
A B&M flex plate takes care of the balance issue with a neutal torque converter. Cheap stuff. FWIW

 

[drobertson]

Use the 318 motor mounts, just use a nut to take up the space.
A B&M flex plate takes care of the balance issue with a neutal torque converter. Cheap stuff. FWIW

I could do that... but I want the motor to be the correct year for the body. If I can remember correctly, 360s weren't available in chargers until 1974. Would the 360 really have more power potential???

 

[UKPlymouth]

I could do that... but I want the motor to be the correct year for the body. If I can remember correctly, 360s weren't available in chargers until 1974. Would the 360 really have more power potential???

YES! The torque difference is major. Better heads, bigger ports etc..

I have a well built 340 in my Roadrunner and it leaves my friends 318 standing. If you want originally, fair play, but people pull 'teens out of these cars for a reason. Did that swap on my old Dart. Space the engine mount, replacement flex plate. Go and drive and enjoy the difference