440 one or two carbs?

[patp]

Back to reality! Thanks for the comment.

 

[camtra]

HA!! Not many recommendations for just 1. :3gears:

 

[Cranky]

Just starting a 1969 project car. Currently car has a good 340 but I have picked up a 1970 440 block, I plan to rebuild and use that one. No intake on the block so....... one or two carbs? I am thinking that I want two carbs but have no idea,might just be an upper mid age crisis thing. Any advice from the experts?

What car do you have? My 71 340 Cuda was 2 tenths faster than my 70 440 Challenger was. The Challenger was heavier by about 150 lbs.

HA!! Not many recommendations for just 1. :3gears:

One carb can and do work well. To the ones that have a low rise 2x4 intake....how well does the set up run. I've seen a few around my area go with that set up and had problems making it run good. It ran ok but didn't run any better than a single 4. Had one 440 with a Weiand TR with 750 TR carbs on top and it ran pretty nice. Biggest draw back with it is of course sticking through the hood....that is if you want to call that a draw back

 

[khryslerkid]

For me it won't be any advantage. One carb IMO would be so much simpler. But I like the challenge. I have always been good at tuning a carb but never owned a 2x4 setup other than a 750 Honda with four carbs.

Back in the day two fours were probably one of the only ways to dump more gas down a highly modified engine other than a Hilborn setup. Today there are highly capable big fours that can do the same job as two.
So other than looking cool and fitting in with the nostalgic theme, one four is the easier route to take.

Two fours can run just fine if they operate and are tuned properly.

 

[lewtot184]

the 1x4 vs multi-carb argument has raged for decades. i'd venture to say that the 1x4 people generally don't have a good working knowledge of carbs and that's their "unspoken" reason for their opinions. if one's a challenge then the intimidation factor of two or three is multiplied. simply if you don't like multi-carb then don't use it. for me the versatility for a street car far out weighs any extra effort.

one more thing. a ch28 is far from being a low rise intake.

 

[ilm65]

- - - Updated - - -

A&A Max Wedge intake, 2-600cfm Edelbrocks (manual chokes) = GREAT PERFORMANCE w/ NO PROBLEMS--LOVE THE LOOK AND THE "WOW FACTOR" WHEN I OPEN THE HOOD!!!

 

[PurpleBeeper]

I run a six pack, but I've often thought of trying one of those old 413 in-line dual quad setups (stock). I had one for a 361/383 once and let it slip away. No hood clearance issues with those!

 

[383man]

the 1x4 vs multi-carb argument has raged for decades. i'd venture to say that the 1x4 people generally don't have a good working knowledge of carbs and that's their "unspoken" reason for their opinions. if one's a challenge then the intimidation factor of two or three is multiplied. simply if you don't like multi-carb then don't use it. for me the versatility for a street car far out weighs any extra effort.

one more thing. a ch28 is far from being a low rise intake.

Myself I like one carb because its less work for me and with my health problems it works better for me that way as its not my "unspoken" reason. I know carbs very well and would put my carb knowlege against anyone and I have always done my own carb work. So I dont like one carb beacuse I cant tune them I like them because thats less time spent working on my car and gives me more time to work on my friends cars and its a cheaper setup for me since I dont use a Dominator. Ron

 

[69clone]

They are all cool. 3x2, 2x4 or those big dog bowls some of the guys on here use.

 

[ozymaxwedge]

2 four barrel carbs means twice the cost, twice the headaches, and no real gain in performance.

Plenty of gain in horsepower

 

[dla4567]

Plenty of gain in horsepower

How? An engine can only use so much fuel. Under or over sizing carb reduces performance. What would be the advantage of two 450 carbs over one 900 carb?

 

[lewtot184]

increasing carbs has nothing to do with fuel but is all about air. you will always be short changed if you live by some "cfm code".

 

[Cranky]

And it can depend on how the 450's are set up. You can actually end up with a crisp response off idle and in the lower rpm ranges if they only open up the primary's at part throttle. Had many tell me I had too much on top of my 440 but it didn't seem to hate having 2 750's on it.

 

[dla4567]

Not living by any "cfm code", I used the word fuel because air is fuel. Increasing the number of carbs does not increase the amount of fuel (air) an engine can use. There are not many street engines built beyond the capabilities of a single carb. I agree that properly set up dual quads will provide good throttle response, so will a properly set up single carb. And with less expense and hassle of tuning.

 

[lewtot184]

Not living by any "cfm code", I used the word fuel because air is fuel. Increasing the number of carbs does not increase the amount of fuel (air) an engine can use. There are not many street engines built beyond the capabilities of a single carb. I agree that properly set up dual quads will provide good throttle response, so will a properly set up single carb. And with less expense and hassle of tuning.

i'm not completely with you on this, but believe what you want.

 

[dla4567]

I'm sorry, I thought we were just having a discussion about the topic at hand. I get the impression from your comments that you feel I am to far below your level to be capable of an intelligent conversation.

 

[GetX'd]

I'm a six pack man here. Have run them on top of my 440/494 for years. The motor likes them and always tells me so whenever I race someone - course those days on the streets are over - but not at the strip.

 

[ozymaxwedge]

Not living by any "cfm code", I used the word fuel because air is fuel. Increasing the number of carbs does not increase the amount of fuel (air) an engine can use. There are not many street engines built beyond the capabilities of a single carb. I agree that properly set up dual quads will provide good throttle response, so will a properly set up single carb. And with less expense and hassle of tuning.

dla, I cant explain how exactly but I have been playing with these for a long time and trust me you will make more power with a tunnel and twins most days, ask anyone who races. I have gone from a single 1050 AED dominator (tuned) to these 2 TRE 950 carbs and without tuning I can feel a big change, my guess is 50+ hp extra, Im dynoing on Tuesday night so we will see.
Ask yourself this. Can you make more and less power changing intakes or spacers or ??

 

[1969 Hemi RTs]

Go with dual's

 

[patp]

69 charger