318 using 4 barrel carb.

[dieseljoe]

Could any one tell me what size 4 barrel will work with a 318 set up with a 4 barrel manifold and 340 heads?

[72charger]

I don't know about the 340 heads part but I have a 318 in my car and I am using a Holley 650. i don't know if it will help you but I just thought I would tell you. Matt

[Deleted]

600cfm - 750cfm ,, anything in that range should be ok.

im using a 650 edelbrock performer, stock 4bbl intake, about the same heads as you, 30 over 318 block. i could/should probably go bigger , but i already had the 650. i would love to have a six pack on top .... it will have to wait.

[Nacho-RT74]

70 Coronets 2 doors and 71 Chargers were assemblied down here with 4 bbls carbs on 318s from factory. TQs

[dogbert22]

650-750 cfm should be fine, don't think you need to pay big $$ for a bigger carb unless you plan on spending a lot of time at 5K+ rpm. I'm a Holley guy, but some people swear by the TQ's/Eddy carbs...

[dieseljoe]

Thanks for the info, sound like a 650 is just fine

[CDN72SE]

Aug 24, 2009 21:22:28 GMT -5 dieseljoe said:

Could any one tell me what size 4 barrel will work with a 318 set up with a 4 barrel manifold and 340 heads?

I've got the same setup as you and am using a Holley 650.

[gschmidt211]

My '72 Satellite had a Thermoquad atop it's 318. It ran nicely, until the thermoquad did what thermoquads do...the plastic cracked and was dumping gas down the intake.

I changed out the intake and went back to the 2 barrel just in time for the drive to the 2008 Nats.

However, the thermoquad ran really well before the plastic took a crapper.

[superduperbee]

Look for old Fury or Diplomat cop cars, they all had 318 4bbls.