6bbl to 4bbl any gains?
#168976
12/16/08 10:04 PM
12/16/08 10:04 PM
|
Anonymous
OP
Unregistered
|
Anonymous
OP
Unregistered
|
I'm going to switch from my 6bbl to a victor intake and 950 carb.Just wondering what gains i could expect. Motor is in 69 roadrunner 470with cnc'd eddy's 10.6 comp 1 7/8 hookers 590ish cam with 260ish dur.@50 391gears 28in tall tire 3500 stall car ran best of 11.30@121 thanks for any input or suggestons. EDDIE B 
|
|
|
Re: 6bbl to 4bbl any gains?
#168977
12/16/08 10:18 PM
12/16/08 10:18 PM
|
Joined: Oct 2004
Posts: 1,946
Connecticut
5126brl No more
top fuel
|
top fuel
Joined: Oct 2004
Posts: 1,946
Connecticut
|
I have a 451 with a stock six pack, bulldog heads and a 260-266 cam. made 591 hp. 480 @ the wheels. I think you may pick up 25 hp with a switch to 950. 
|
|
|
Re: 6bbl to 4bbl any gains?
#168978
12/16/08 10:39 PM
12/16/08 10:39 PM
|
Joined: Mar 2007
Posts: 3,277
West Coast, USA
jbc426
master
|
master
Joined: Mar 2007
Posts: 3,277
West Coast, USA
|
My non-MW port EZ headed, hydraulicly cammed 493" wedge makes 682 hp at 5500 rpm with a sixpack and I'd have to double check but if memory serves it made 685hp with a four barrel, so not too much difference on mine.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
|
|
|
Re: 6bbl to 4bbl any gains?
[Re: jbc426]
#168979
12/16/08 11:03 PM
12/16/08 11:03 PM
|
Joined: Dec 2003
Posts: 3,957
West Coast, CA
Troy
master
|
master
Joined: Dec 2003
Posts: 3,957
West Coast, CA
|
I would say 15-20hp, It's not the carbs that is the problem....it's the six pack intake that hurts you. Just my
....there is nothing like driving my 1968 Hemi Dart around town and having people looking at you like you're nuts!!
|
|
|
Re: 6bbl to 4bbl any gains?
#168980
12/16/08 11:16 PM
12/16/08 11:16 PM
|
Joined: Aug 2003
Posts: 43,097
Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,097
Bend,OR USA
|
I have seen and did similar changes to a lot of 440 type motors with stock size intake ports, all of them slowed down in the 1/4 ET and MPH when decreasing the total CFM, regardless of intakes used  I did a dyno test on my low deck stroker two winters ago, removed the six pak and replaced it with a 1050 dominator carb and intake, the motor lost 8 hp and had the exact same torque  More CFM on a big block Mopar with stock type heads,ported or unported, makes more power in my opinion and experiences
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: 6bbl to 4bbl any gains?
[Re: jbc426]
#168984
12/17/08 04:06 AM
12/17/08 04:06 AM
|
Joined: Jul 2004
Posts: 4,384
Worst Weather USA
493_DART
master
|
master
Joined: Jul 2004
Posts: 4,384
Worst Weather USA
|
Quote:
My non-MW port EZ headed, hydraulicly cammed 493" wedge makes 682 hp at 5500 rpm with a sixpack and I'd have to double check but if memory serves it made 685hp with a four barrel, so not too much difference on mine.
682 ???
what are the specs on this HYd. cam motor ? 
|
|
|
Re: 6bbl to 4bbl any gains?
[Re: 5126brl No more]
#168987
12/17/08 10:49 PM
12/17/08 10:49 PM
|
Anonymous
OP
Unregistered
|
Anonymous
OP
Unregistered
|
would it work better with more convertor or just change convertor and leave 6bbl?
|
|
|
Re: 6bbl to 4bbl any gains?
#168988
12/18/08 01:51 PM
12/18/08 01:51 PM
|
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
|
Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
|
Quote:
I'm going to switch from my 6bbl to a victor intake and 950 carb.Just wondering what gains i could expect. Motor is in 69 roadrunner 470with cnc'd eddy's 10.6 comp 1 7/8 hookers 590ish cam with 260ish [Email]dur.@50[/Email] 391gears 28in tall tire 3500 stall car ran best of [Email]11.30@121[/Email] thanks for any input or suggestons. EDDIE B
That's not bad considering the weight of your car and gear. I'm not sure you'll see any gain. The Victor is for higher rpms and might not have the low end the 6-pack has. My buddy runs about the same set-up in a 68 dart w/ a 850DP but w/ more stall and gear and runs 10.80's. What about re-tuning your 6-pack or trying some 4.30's??
|
|
|
|
|
