carb selection
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carb selection



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A 360 requires approx 720 cfm (Don's Law) closest would be a 750. 
Double pumpers belong only on race only cars or engines well over 400 cubes. Otherwise performance suffers. 
A 750 vacuum sec holley would be a excellant choice and a Edlebrock etc would also be good. 
A 600(650) despite it being a really good carb is really far to small. No hot Chevy racer would run a 600 on his 350 and we shouldn't run them on our 340/360s either. Otherwise we are "giving away the farm"
For a 318 though they would be about perfect (Actually a 625 or 650 cfm would be )
Over the 35 odd years i have been at this i have noticed that most speed shop owners always tell the Mopar guys to run a 600 or 650 on thier 340s (and now 360s) I have on occasion gone with the fellow back to the shop and asked to look at the owners 350 camaro or nova etc, Never not once has there every been a 600/650 on the 350 engine sitting there, always a 750 , usually a 3310 Holley which probably is the worlds best carb anyway. 
I don't know if it is actually concious thought or not that makes them think a 340 can't use the same level of carburation as a 350 chev but I am very suspicious. These same local bohunks BTW despite thier always saying that the 350 Chevy is the most powerful engine available in its class actually have a rule at the local Stock car track that says NO 340 DODGE MOTORS ALLOWED.
Now I wonder why that would be. In the 6 cly section they used to have "no inclined 6 cly" because a couple of old dudes here in the 1970s built a 62 valiant station wagon with a real hot 170 cube /6 and whipped the pants off them all for a couple of years. 
I say this though not wanting offend anyone as I know what it feels like on the other side of the fence. (That means i don't want to offend anyone here. )I, however, activiely work to offend Chevy guys. It is my lifes calling!
Don

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