440: 6pak vs 4 barrel

Author Topic: 440: 6pak vs 4 barrel  (Read 8527 times)

Offline Plum6Pak

  • Resident
  • *****
  • Posts: 3572
  • Plum6Pak
Re: 440: 6pak vs 4 barrel
« Reply #15 on: December 20, 2005 - 05:16:21 PM »
You gonna start that motor or just stare at it and dust it! lol

 :roflsmiley: LMAO!! I was actually running it every couple of weeks till I returned the engine test stand. Sure do want to get it in the car and fire it up!! For now, plum6pak will just keep it dusted and sit and watch the 6pak with a six pack.  :grinyes:




Offline sccarts1

  • Jr. Member
  • **
  • Posts: 69
Re: 440: 6pak vs 4 barrel
« Reply #16 on: December 21, 2005 - 10:37:33 PM »
the total cfm on both set-ups is about 1200 cfm.  3x 400 vs 2 x 600.  but hemi heads have a higher cfm capability.  in a daily drive situation
the 440+6  is more bang for the buck.

Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36620
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: 440: 6pak vs 4 barrel
« Reply #17 on: December 21, 2005 - 10:52:24 PM »
actually the center carb is a 350 CFM & the outboards are 500 CFM each
 the confusion is that the 2 bbls are rated at 3" of vacuum & 4 bbls at 1.5 " of vacuum so the rating is not the same
 if the 6 pack was rated as a 4bbl it consensus seems to be between 950 - 1000 cfm @ 1.5 " of vacuum

Challenger - You`ll wish You Hadn`t

Offline gotacuda23

  • Jr. Member
  • **
  • Posts: 220
  • 73 mist green 440 cuda
Re: 440: 6pak vs 4 barrel
« Reply #18 on: December 25, 2005 - 09:50:12 PM »

Does anyone have any actual 0-60mph times for a stock 440-4bbl vs the 440-SIXPAK?
I've always thought the 4bbl was the quicker of the 2 up to the 0-60mph then it's the 6bbl from there....... :dunno:


 :undercar:

on a calender i have it says 0-60 in 5.9 seconds for a 1970 440-6 pack cuda... but thats completely stock
« Last Edit: December 30, 2005 - 12:47:27 AM by gotacuda23 »

Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36620
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: 440: 6pak vs 4 barrel
« Reply #19 on: December 26, 2005 - 01:28:59 AM »
my experience indiactes the opposite , the 6 pack will out run the 4bbl anywhere

Challenger - You`ll wish You Hadn`t

Offline gomangoRT/SE

  • Full Member
  • ***
  • Posts: 594
Re: 440: 6pak vs 4 barrel
« Reply #20 on: December 26, 2005 - 09:48:40 AM »
I have an ex father in law who is a top notch mechanic and still is even at age 70.   2nd generation guy who held numerous NHRA records in the 60s.   He notes the six pack will always outrun the 4 bbl application <if> the 5 pack is set up correctly.    Oftentimes backyard boys and shade tree mechanics (like myself he he he) will tinker and play and these out of sync.  Not the easiest thing to rebuild carbs and set them up to function as a unit, where each carb has its use.   When the six pack is set up right by a competent professional it screams.......   and no, I have never had a six pack so I am not tooting my horn.    :working:

Offline AprilsPink72Cuda

  • Global Moderator
  • Resident
  • *****
  • Posts: 4783
  • 1972 'Cuda 340/Wappingers Falls, NY
    • Klondike's Website (Check it out!)
Re: 440: 6pak vs 4 barrel
« Reply #21 on: December 26, 2005 - 05:53:53 PM »
You guys are getting me all excited with all of this 6 pak talk.  I can't wait to get mine on the car.

Offline Bondavi

  • Jr. Member
  • **
  • Posts: 390
Re: 440: 6pak vs 4 barrel
« Reply #22 on: December 28, 2005 - 12:01:04 AM »
I sometimes just go out in the barn with a beer and just stare at the hemi....

You said it all.   :cheers: :drunk:  :ylsuper:
David

'70 Challenger R/T FC7 440-6 4spd N96 3.54 Dana - SOLD