6pk or 4brrl

[70_charger]

Gonna build a stroker(500+ ci) ! what is gonna get me better performance the 6pk or a holley or BG 4 brrl?

[Ghoste]

Personally, I'd put a four barrel on there for best performance and widest manifold choice. 

[Steve P.]

I agree with Ghoste.  The WOW factor for the 6-pak is cool, but,,,,,   ...

[firefighter3931]

Like the others have said...a well tuned 4bbl will make more power. 



Ron

[Ghoste]

And provide fewer tuning headaches over the long haul.

[70_charger]

man that was easy thanks

[70sixpkrt]

I vote for the 6pk. I am using the ProMax stuff and have not had to adjust anything on the carbs. yet. I also love when the outboards kick in.

[charger50071]

I currently am running a 6-pack, some days it runs great other days like crap. At 2800.00 bucks for an all new setup, good thing it looks cool or I'd put the 4-barrel back on.

[Dodge Don]

I vote for the 6pk. I am using the ProMax stuff and have not had to adjust anything on the carbs. yet. I also love when the outboards kick in.

I agree

[SeattleCharger]

four barrel,   but six pack sounds cool

[Rolling_Thunder]

The 4bbl will get you better power in the long run - but the 6 pack is by no means a slouch - plus the 6 pack has the big "wow" factor. A single 4bbl will also get you more power than a dual 4bbl set up as well...      The 6 pack is usually a tuning nightmare (new carbs have the outboards adjustable and helps alot) but the six pack will also cost a bit more....   

I'm going through a similar dilema - I am deciding if i should build a stroked big block for my RR or or build a A12 clone with a stoked six pack...     not sure at the moment.

[firefighter3931]

I vote for the 6pk. I am using the ProMax stuff and have not had to adjust anything on the carbs. yet.

Ricky, your's was dialed in on the dyno....not surprising that there would be no further adjustments needed 

On a hot 440 type build the 6 pack with good parts (Metering block>center carb & Adjustable plates>outboard carbs) the tune can be dialed in pretty good.....close to a single 4bbl setup.

On a 500in stroker the 6pack manifold becomes the cork and doesn't move enough air to feed the bigger displacement. The 6-pack can still be made to run good on a stroker but you will be leaving some power on the table.


Fwiw, i like the 6pack setup and for visual appeal it kicks butt ! Ricky's build proves that 500hp from a well built 440 is easily attainable with a properly set up 6-pack induction system.     It's just not the "hot ticket" if you're chasing every last ounce of HP potential out of the build. 



Ron

[jerry]

i have been driving a factory built 6-bbl car since 69 and never had a problem.wouldn't own a 4-bbl car, 6-bbl is fast enough.always gets the job done.talking about a stock engine .

[68charger383]

I'd go for the 6-pack, get the perfromance and the wow factor.....Nothing like the feel of the outboards suddenly kicking in on a 6 pack!

[Rolling_Thunder]

I'd go for the 6-pack, get the perfromance and the wow factor.....Nothing like the feel of the outboards suddenly kicking in on a 6 pack!

also 6 packs get better highway milage   

[70_charger]

Im putting this on a stroker,Id def. put one on a stoker . Ive heard of very many peeps running 6 paks on strokers .

[AKcharger]

My 470 s going to run a six pack from promax. I've heard about the tuning woes but with new technology and the ability to dyno the whole set-up before it leave the shop i'm there. Now if I was on a tight budget I'd go with a 4 bbl...but right now, i'm not 

[Rolling_Thunder]

Im putting this on a stroker,Id def. put one on a stoker . Ive heard of very many peeps running 6 paks on strokers .

look at most of the FAST class mopar participants...   Alot of A-12 clones   

[Ghoste]

Do you think if the FAST class rules allowed them to run a big single plane with an aftermarket four barrel they'd still all be using the 3X2?

[firefighter3931]

Do you think if the FAST class rules allowed them to run a big single plane with an aftermarket four barrel they'd still all be using the 3X2?

The factory manifolds and 2.5in exhaust pipes are the big cork...a single plane might make a little more power but w/o headers and bigger pipes you will not realize the full potential of a single plane/double pumper induction package. 


Ron

[Ghoste]

Okay, let me rephrase that, do you think the FAST class guys are running the 6 pack because it's the hot ticket or because the rules say they have to? 

[SeattleCharger]

Okay, let me rephrase that, do you think the FAST class guys are running the 6 pack because it's the hot ticket or because the rules say they have to? 

Is that multiple choice? 

[Ghoste]

It is in this context. 

[firefighter3931]

Okay, let me rephrase that, do you think the FAST class guys are running the 6 pack because it's the hot ticket or because the rules say they have to? 

I believe it's more to do with the rules and what appears "correct" because this is after alll a "stock appearing" race class and the 6 packs are pretty cool to look at. All the really quick guys that are competitive in this class are running high compression stroker motors that run on race fuel so the stock 6-pack and stock HP exhaust manifolds & stock heads are really holding them back.....probably to the tne of at least 100 hp or more which could be achieved with better heads/intake/carb and headers/exhaust.



Ron

[SeattleCharger]

so about what kind of horsepower range are these guys in with strokers and hp exhaust manifolds?  high four hundreds?