Carb Choice (New 318)

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toolmanmike said:
:poke:You never have to work on the Eddies. :poke:
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What I'm saying is, since we're talking about a new build, this thing will need to be dialed in
I'm sure that once the Eddie is properly set up it is fine, I'm simply suggesting that he go with a carburetor that is easier to dial in
 
two points, if I may...
  • I've had eddies, and I've had holleys. I've ALWAYS dropped the E.T. slip and added mph by removing a Eddy and installing a Holley. Every..... single..... time. To be fair, I've never tried the Thunder series.
  • The Holley's have ran as consistent for daily drivers as the eddies. And yes, I currently have both carbs :)
 
There is endless debate on these forums about your question. My mildly modified 318 started with an Edelbrock 600. I could not get heat boiling issues to resolve despite trying multiple different things. I switched to a Holley 600 and have had absolutely no problems since. But opinions vary widely on this subject. Pick one, run it, and if you don't like it switch to the other option. I wouldn't go over 600 because there is no need to over-carb your car. 600 cfm is more than enough for a mild 318.
 
Are you going to run headers?
 
RustyRatRod said:
Then I guess there's no point in your statement about keeping it simple while leaving nothing on the table.
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I disclosed the use of the 273 manifolds in my original post. I am a noob with limited resources. In respect of your 8,125 likes, i am not certain this was called for.
 
GreyWizard said:
I disclosed the use of the 273 manifolds in my original post. I am a noob with limited resources. In respect of your 8,125 likes, i am not certain this was called for.
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Called for? I don't understand. I made a simple statement. Simply that you will leave a LOT on the table without headers. Sorry, I actually missed the 273 manifolds.
 
RustyRatRod said:
Called for? I don't understand. I made a simple statement. Simply that you will leave a LOT on the table without headers. Sorry, I actually missed the 273 manifolds.
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Is there something inherently wrong with the 273 manifolds? From everything that I read, the stock small block manifolds flow nearly as well as headers...or near enough to not justify the $500+ cash layout on a mild engine like the subject of this thread.
 
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Not exactly apples:apples but here's some data on this at least...

Exhaust on a Mopar 300hp Crate Engine - Tech Articles - Mopar Muscle Magazine

155_0307_exh_dyno_z.jpg
 
After rereading all of the posts, I was surprised nobody recommended a 500 cfm. I gather the membership believes that would have me under carbed?
 
GreyWizard said:
After rereading all of the posts, I was surprised nobody recommended a 500 cfm. I gather the membership believes that would have me under carbed?
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I thought the same thing. The conventional carburetor wisdom seems to err on the side of under rather than over-carbing.

I don't know enough to recommend one way or another but if you don't plan on ever moving any more air with this motor I would be surprised if a ~500cfm carb wouldn't be just fine.
 
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