6 pack small block question

6 pack small block a big diffrence in performance campared to 4 barrel carb? which is more fuel efficient?  

If you buy into the hype that the 6 pack is something special then go ahead and buy the set up.
Truth, there is no advantage other than it looks cool.
In fact a good 750 double pumper on an stock air-gap intake will out run a 6 pk almost everytime and if you drive both set ups the same you will get similar fuel economy. All this for a third the money.
Doc  

It's big cfm with lots of air speed.  
age is no lock on brillance

Big CFM with lots of air speed? Yea, once its doing a hundred.
Meanwhile I will be back in the pits cooling off with the double pumper for the next round!
In fact I have only seen one fairly successful 6 pack drag set up. It was on a 10.80 Super Bee 440. The guy removed it, put on an 850 DP and went 10.60's the following yr. No other changes and same mile pr. hr in the quarter.
 

chrysler rated the 1970 340 4 barrel 625 avs at 275HP and the six b at 290HP. Chuck Rayburn won the NHRA stock world championship with a 440 six Challenger. it is all about the total combination and jetting and timing and tuning and going for it!  

thanks!  

The honest truth is the 6 pk was known for having a slight bog, hardly ideal for total performance. So someone won stock eliminator with a 6 pk. big deal. I gurantee a lot more single four barrels have won titles than multi carb units, especially in the stock eliminator wars.
The 6 pk was created for one reason, to go head to head with the 3 deuce GTO's in the show room wars.  
As far as horse power rating, just look at the engine challenges by this magazine, 4 barrel carb's win the challenge's handsdown.
Unless your building a full blowen drag car multi-carbs are simply for looks.
 

many stock vehicles have a slight bog due to being a little lean and conservative on ignition advance-both easily fixed. big deal? yes. more 4 barrels have won cuz around 96% of the cars in stock elim. are 4 barrel duh.  

96% of cars in stock eliminator run 4 barrels why? Because they work best. Hey 4 spd, Nice to see we agree on one thing. However a tunnel ram would be used in what application? a full blown drag car like I already said, da. If I didn't know better I would think you were threatening me. Why? Cause I don't always agree with your hillbilly answers? Very sad, you need to grow up.


As far as the horse power numbers given by a fellow member lets consider this. Demon Carb recently did a comparison with a 625 CFM and their current 6 pack unit. They noted a 10 horse power increase for the 6 pk.
Their 6 pk consists of 3 250 cfm carbs. Why the 250's? Simple, they have more useable hp or torque with the smaller carbs compared to the factory 6 pk units.
I also know of a 650 cfm to 750 comparison that shows a 1 hp difference after tuning the 650.
The point is this HP # mean little when your not comparing apples to apples. What I do know is this, a 750 DP tuned to the max. is the best all around street strip carb set up hands down, single or multiple carbs included. Why, because the 750 holley HP/DP has more user friendly horsepower and torque in a wider power band range than the 6 pk units. Its really that simple.
Especially for a street strip ride.
Doc  

I'll agree with don't get caught up in looks, cause I know a 4 barrel will make the same and do it better with way less time/$ involved, but hey saying no air speed? like a thermoquad huh, you know the ones running high 10's in G stock? now thats a worse example with poor transitioning to 600cfm secondarys by means of piss tubes...uhh...I'll take the holley 6 pack.  

Four barrels way simpler tune/cheaper @ the same cfm requirement, along with fuel distribution issue is less a pain in the ass to remedy too.

Just don't come in rippin yer shirt off like the ultimate warrior of mopar....  
age is no lock on brillance

Nobody was rippen their shirt off Justin. All I was trying to say is the KISS method works best. Or Keep it simple st$p$d for a third the price.
Doc  

to fix the bog problem on the 6 pack, theres a metering jet kit. thats what i hear.  

Your partially right, most six packs just need some tweeking, depending on what the application is of course.
On a friends 440/6 pk I increased the main carb jets two sizes. Installed a 50cc accelerator pump and a larger shooter. This eliminated any hesitation there was, at least on the street.
Doc  

uh huh....  
age is no lock on brillance